Draft Prospect: Tyler Matzek, LHP, Capistrano Valley HS

June 5, 2009 • Scouting

Unlike Matthew Purke, Tyler Matzek is routinely regarded as a pitcher with an easy, repeatable delivery. Matzek is able to throw 90-94 mph with ease and has recently been as high as 98 mph according to several reports. He throws a curveball that has plus potential, but scouts from the Major League Scouting Bureau have a lesser opinion of its current quality than Baseball America does.

Dr. Mike Marshall weighed in on Matzek in his Questions/Answers 2009 file. If you are at all familiar with Dr. Marshall's view of the 'traditional' pitching motion, you'll recognize that his comments border on praise. Dr. Marshall had the following to say:

Mr. Matzek's version of the 'traditional' baseball pitching motion is not as injurious as many I have seen... I doubt that he will suffer a serious pitching injury. However, he will never be as good as he should have been.

As with Purke, I was intrigued by the generic mechanical comments I'd read in scouting reports. This time, though, the comments were about an easy, repeatable delivery. The comments from Dr. Marshall further piqued my interest. I dug around and found a video similar to the one I used for my Purke article.

Here's the video I looked at, courtesy again of Baseball Factory:

Even though it's a warm-up pitch, I chose to use the first pitch in the video as my example. The stills in the two images below were taken from this same pitch.

Important stages of Matzek's arm action.
Important stages of Matzek's arm action. Click to view larger image.

In the first frame, you can clearly see that Matzek takes the ball primarily toward second base during his pick-up. If you looked at my review of Purke's mechanics, you'll remember that he took the ball primarily toward third base. Skipping ahead to the fourth frame (approximately the release point), you can see that Matzek has much less side-to-side movement than Purke. His driveline to the plate is very direct compared to most 'traditional' pitchers, extremely efficient.

The second frame shows Matzek's body position at foot-plant, in the 'traditional' cocked position, where he seems to have a nearly straight-forward stride. At 90° of flexion, the ulnar collateral ligament is at its most vulnerable. At this stage Matzek's arm is fairly straight, so the late forearm turnover and reverse forearm bounce that follow are less of a problem. This is part of why Dr. Marshall views Matzek's arm action as less injurious.

As Matzek increases his elbow flexion, he also tilts his shoulders to the glove side and raises his elbow. This action helps limit his forearm flyout by effectively straightening his elbow's path. At his approximate release point, you can see that his forearm is nearly vertical.

In the video Dr. Marshall reviewed (of a side session), he mentioned that he was concerned about Matzek's forearm flyout. The video that I reviewed seems to show that Matzek's forearm flyout is minimal.

Matzek's follow-through from release to finish.
Matzek's follow-through from release to finish. Click to view larger image.

The first frame in this image is from shortly after release. Matzek's elbow is flexed and his wrist is pronated to the point where his palm is nearly facing up. This indicates two things: (1) Matzek pronates his release very powerfully, and (2) Matzek may be using his latissimus dorsi to internally rotate his arm instead of using his pectoralis major to horizontally flex his arm.

At this normal frame rate, it is practically impossible to tell for certain whether or not Matzek pronates into release, but he sure appears to be doing so.

Dr. Marshall says that because Matzek's stride is "too closed," he must be using his pectoralis major to horizontally flex his pitching arm. If he were actually horizontally flexing his arm to throw the baseball, I don't believe that Matzek could achieve the arm position shown in the first frame of this image.

By the second frame, his primary arm deceleration phase is done. The continuation of his body action in the next two frames causes his arm to wrap across his body. I believe the appearance of recoil is an illusion created when Matzek stands up to field his position.

So... what are you saying?

Matzek throws some high-quality pitches from a relatively safe, easy, and repeatable delivery. From an objective perspective, there are fewer risk factors than most 'traditional' pitchers. For a high school pitcher, he's a lot more polished than I would have expected.

I have reason to believe that he throws three different fastballs and a pronated curveball. After doing my research, I like him more than I did, and I'm kind of upset that there's no chance he'll be around when the Texas Rangers pick at #14. I guess I can hope, though.

You might also want to check out dirtberry's YouTube channel for more on Tyler Matzek.


Draft Prospect: Matthew Purke, LHP, Klein HS

June 2, 2009 • Scouting

Spring, TX - a suburb of Houston - has produced quite a number of early-round draft picks over the past several years. It looks like Klein's Matthew Purke will join a list that includes former Klein players Josh Barfield, Chris George, and David Murphy, as well as Josh Beckett, Sam Demel, and Daryl Jones from Spring High School.

Purke stands at 6-foot-3 and weighs 180 pounds. Scouts like his projectability and believe he could add velocity as he gets stronger. He already sits at 92-94 MPH, occasionally throwing a tick or two harder. His primary off-speed pitch is a slurve-type offering called a slider by Baseball America and a curve by the Major League Scouting Bureau. Whatever you call it, it's one of the best breaking balls in this year's high school draft class.

Conflicting reports from the same two sources have his change up somewhere between "unknown" and "good."

Purke is believed to have a strong commitment to Texas Christian University in Fort Worth, so signability has become a concern for some clubs. Rumors of his signing bonus demands have ranged from $2 million to $7 million, but the most recent rumors have him in the neighborhood of $3 million.

Almost every report on Purke has mentioned something about questionable mechanics. Typically, high school deliveries are full of flaws and quirks, but rarely do these scouting reports go out of their way to mention them.

Baseball America mentions Purke's slinging action, saying that it is neither violent nor smooth. I guess that would be... Average? Typical? Expected? Outside of this specific mentioning of a flaw, I could only find generic references to his mechanics. I wanted to have a look for myself.

I located a solid video on YouTube, looked at it, and made some still photos. Here's the video, courtesy of Baseball Factory: [video has been made private and can no longer be embedded]

There are two big things that jump out at me, but first, I want to say that outside of his arm action, there really isn't much to complain about. He steps nearly straight forward, landing only a few inches closed.

Purke stays closed very well and gets great hip rotation and shoulder rotation. He even stands relatively tall through his release. His core does its job very well.

If I had to pick one part of his body action to complain about, it would have to be his somewhat stiff front leg. That might be the source of the reported inability to repeat his delivery consistently.

The still shots below were taken from the same pitch, the first one in the video.

Matthew Purke's arm action at four key points in his delivery.
Matthew Purke's arm action at four key points in his delivery. Click to enlarge.

Now, here are the flaws in his arm action as I see them. In the first frame, you can see that Purke's entire pitching arm has been moved about as far toward third base as possible. Skipping ahead to the final frame, you get an idea of how much horizontal acceleration takes place. When his arm finally starts moving forward, the centripetal force from the curved path results in forearm flyout. The Baseball America "slinging" comment is dead-on.

Pronated releases can help protect against the negative effects of forearm flyout, but there aren't enough frames available to be able to determine if, or to what extent, Purke pronates into his release.

The second frame shows a massive scapular load at foot plant. This puts extra stress on the anterior capsule of the shoulder, and the extra movement of the head of the humerus places the glenoid labrum at risk.

Still in the second frame, his forearm is past horizontal, avoiding an inverted arm position, but his forearm is almost 180° of external rotation from the throwing position shown in frame three. This causes a late forearm turnover.

Because his elbow is flexed to near 90° during his late forearm turnover, he experiences a pretty intense reverse forearm bounce which puts his ulnar collateral ligament at risk.

Purke's follow-through.
Purke's follow-through. Click to enlarge.

Here's an overly simplistic look at his follow-through. The first frame shows where his arm winds up after primary deceleration. His arm continues in the curved path and winds up finishing hard toward third base. There is no recoil evident at this frame rate, and his arm winds up tucked in softly at his waist.

There could be some extra stuff going on in his shoulder, but the standard 30 frames per second video does not reveal it.

So... what are you saying?

Overall, Purke's mechanics could be a lot worse. That said, I'm not a fan of his arm action at all. The slinging action reported by Baseball America is clearly present, and he puts a lot of torque on his elbow. Long term, he has almost no chance to stay healthy with these mechanics.

Any team that drafts Purke will have to ask themselves which risk they want to take: leave his mechanics alone and risk his arm falling apart - or - change his mechanics and risk his stuff dropping off.


Texas Rangers Prospects: Robbie Ross and Joseph Ortiz

May 27, 2009 • Scouting

Robbie Ross. LHP, 5' 11", 185 lbs, Born: June 24, 1989. The 2008 2nd round pick of the Texas Rangers was said to have 1st round talent. Some minor signability concerns allowed Ross to slip into the early 2nd round where the Rangers selected him and eventually signed him for a reported $1.575 million signing bonus. He has yet to make his professional debut, but Ross could be in line to join the Spokane rotation in less than a month.

In a post-draft interview with Ross, Jason Cole of Scout's LoneStarDugout.com wrote the following:

Ross enters pro ball with an advanced changeup to go along with his fastball and slider. The southpaw’s fastball, as he explains in the interview, generally sits in the upper-80s, low-90s, but he has shown the ability to dial it up to 94 mph at times.

Out of the wind-up, Ross has a very high leg kick, reminiscent of Nolan Ryan's leg kick. After the kick, he starts to drift forward before sitting down on his back leg. This loads the leg very well, but it also lowers his potential release point. From lower release points, pitches take more flattened paths to the plate compared to pitches thrown from higher release points.

Ross keeps his front leg and hip closed until right before foot plant. When he lands, his center of mass almost completely stops moving forward. The momentum from his drive helps him open his hips really well and pulls his back foot forward off the rubber. I prefer this action to the foot drag seen in a lot of pitchers. (In Ross's 2008 MLB Draft Report, he is seen dragging his back leg like dead weight on his first pitch and last pitch, both presumably change ups. I did not identify any change ups within my video sample.)

Worth mentioning is the path his front foot takes toward his landing. His front leg moves in a sweeping motion. By the time his front foot plants, it is moving more toward third base than it is toward the plate. This gives him a soft landing and sort of kick-starts his hip turn as he turns his front leg to face the plate. I like the soft landing but prefer a more direct stride.

As one would expect, Ross's hip rotation leads to strong shoulder rotation. Ross maintains extremely level shoulders throughout. Because he keeps his shoulders level, his elbow moves in a sharp arc around his body. Ross picks up the ball mostly with his shoulder, but he reverse-rotates his shoulders and takes his elbow well behind his back and toward third base. All of this creates a curved path to release, resulting in the centripetal force that causes forearm flyout.

Ross's pronation seems to occur during release. This provides a degree of protection from the negative effects of forearm flyout, but at this frame rate and camera angle, it is impossible to determine whether it prevents his ulna from slamming into his humerus. I was unable to identify any sliders in my sample, so I do not know if he supinates his release for that pitch.

At foot plant, Ross's arm is nearly vertical, but active external rotation is still taking place. This creates a reverse forearm bounce where the baseball is moving toward third base and his elbow is moving toward first base. This indicates a large valgus torque in his elbow and is a risk factor for his ulnar collateral ligament.

Ross's follow-through is where things get interesting. The continuation of the centripetal force described above causes his arm to wrap slightly across his body. There is some recoil, so I have some concern for the posterior capsule of his shoulder, mainly the infraspinatus and teres minor muscle tendons.

Finally, Ross has a weird little hop-twist after everything slows down. This is probably caused by a continuation of his powerful shoulder rotation. He ends in an athletic yet awkward looking stance.

Joseph Ortiz. LHP, 5' 7", 175 lbs, Born: August 13, 1990. When Ortiz debuted with the Low A Clinton Lumberkings last season, he was only 17 years old. Definitely one of the smaller players in the league, Ortiz pitches beyond his stature. Even as one of the youngest players in the league, Ortiz's only statistical fault was a high walk rate - 4.5 per 9 innings. He struck out just over 7 batters per 9 innings and allowed just under 6.5 hits per 9 innings.

This winter, Cole compared Ortiz to former Rule V pick Fabio Castro because of their similar body types and repertoires. From Cole's scouting report:

The lefty constantly attacked hitters with his 87-91 mph fastball... hard, late-breaking slider... [and] a promising, occasionally used changeup...

Ortiz has a very compact delivery without a lot of flair or wasted movement. His stride is fairly standard, and he lands noticeably closed. His front leg sweeps like Ross, but Ortiz puts his foot down before it sweeps all the way across.

Ortiz pulls his elbow down and to the side as he flexes his trunk forward. This can help raise the release point but prevents a few trunk muscles from adding to the pitch and puts a little extra stress on his spine.

His hip rotation isn't great, and he drags his toe in the dirt pretty firmly. Ortiz flexes his trunk over his front hip, so hip rotation - or lack thereof - isn't a huge factor for him. This drives his throwing shoulder in a nearly straight line toward home plate.

Ortiz takes the ball only slightly behind his back, but noticeably drives his elbow toward first base before as he explodes toward release. This lateral movement causes forearm flyout, but Ortiz, unlike Ross, pronates late, making him more susceptible to its negative effects.

Despite his compact delivery, Ortiz has a late forearm turnover. This leads to active external rotation at his shoulder after foot-plant and creates a reverse forearm bounce where, like Ross, the ball and his elbow are moving in opposite directions.

Ortiz's arm also wraps slightly across his body, but with a more alarming recoil. Ortiz's arm appears to collide with his rib cage after the throw. The collision doesn't appear to be terribly violent, but the leverage caused by the impact can place extra stress on the posterior capsule of the shoulder where the muscles are already contracting to help decelerate the arm.

At the very end, Ortiz actually does have a little flair. Instead of a hop-twist, Ortiz's post follow-through action resembles the finish of Dr. Mike Marshall's pitchers. His shoulders and arm point at the target while his lower half turns toward second base.

This doesn't mean much for his pitches or for his health, but it's notable because it puts him in a horrible fielding position. I imagine that you'd see a lot of bunts against him in close games.


Texas Rangers Prospects: Joseph Wieland and Matt Thompson

May 20, 2009 • Scouting

Joseph Wieland. RHP, 6' 3", 175 lbs, Born: January 21, 1990. Normally, when you talk about a skinny high school pitcher with an 88-91 mph fastball, you expect a certain amount of projection. A scout for the Major League Scouting Bureau said, "There isn't much to project; he's not going to be a very physical guy." I'm definitely not a fan of the overly generic and often hedged Scouting Bureau draft reports, but this comment left me confused.

After being drafted by the Texas Rangers in the 4th round of the 2008 MLB First-Year Player Draft, Wieland had a very strong debut with the Arizona Rookie League Rangers. By the time fall instructionals arrived, Wieland's fastball was consistently 90-93 mph - a modest but solid 2 mph gain in only 4 months. There may or may not be more where that came from, but there's definitely room for projection.

The scout also pegged Wieland as an above average strike thrower, and that certainly has been the case so far in his professional career. In his 43.2 innings in 2008, Wieland averaged a meager 1.65 walks per 9 innings. What was really impressive was the rate at which he missed bats. In those same 43.2 innings, Wieland allowed only 32 hits while striking out 41.

Wieland recently made his 2009 debut with low A Hickory. The following video was shot during spring training.

Wieland has an easy, powerful stride. He lands fairly closed, but twists his landing leg to point his toe directly at the plate. There is some awkwardness when his back leg comes off the rubber. Because he lands closed, Wieland's back hip and leg are driving "through" his front hip. This is an example of a stride cutting off hip rotation.

Interestingly, his hip rotation doesn't seem to affect his shoulders. He gets good forward flexion, and his shoulders rotate as a single unit rather than separately.

Good shoulder rotation usually leads to a controlled follow-through, but Wieland's arm flies across his chest. This tends to stress the posterior capsule of the shoulder, particularly the supraspinatus and infraspinatus muscles of the rotator cuff.

Joe Wieland, hook/grab.
Joe Wieland, hook/grab.

Wieland flexes his wrist toward 1B.Wieland takes his elbow pretty far toward first base, and even flexes his wrist in that direction. Though some people don't like this type of wrist flexion, I tend to view it as more of a quirk than anything else. The movement toward first base leads to forearm flyout when he drives his elbow back to the third-base side to throw the baseball.

When Wieland's front foot lands, his pitching forearm is nearly vertical, and active external rotation has already stopped. Though he picks up the ball with his elbow, he avoids an inverted arm position.

A reverse forearm bounce is present, but since the ball and his elbow aren't travelling in oppposite directions, it is fairly small.

Wieland appears to pronate pretty well on both his fastball and his curveball and very well on his change up.

Matt Thompson. RHP, 6' 3", 210 lbs, Born: February 10, 1990. A 7th round pick in last year's draft, Thompson recieved a signing bonus worthy of a 2nd round pick. He impressed the Rangers in a pre-draft workout at Rangers Ballpark with a fastball that flashes into the mid-90s and a sharp curve in the 74-77 mph range.

Thompson is a local product from Burleson, TX and attended Grace Preparatory Academy in Arlington, TX - practically in the Rangers' backyard.

He had an awful debut statistically. In only 8.1 innings, Thompson allowed a staggering 25 hits. He walked 4 hitters as well but struck out 12 to maintain a 3:1 K:BB ratio.

Thompson was really impressive at spring training, but he might not make his 2009 debut until Spokane takes the field in June.

Thompson has a high leg kick, gathers himself without drifting, and then goes into sort of a modified drop-and-drive stride. He lands just a bit closed - somewhere between my offset camera position and the plate - and keeps his shoulders closed extremely well.

Thompson flexes his trunk and rotates his shoulders simultaneously, and he does so while staying fairly tall. This description is similar to what I said about Neftali Feliz's trunk and shoulders, and even though Thompson does this very well, Feliz does it much better.

He limits but does not eliminate lateral movement of the baseball - both toward first base and toward third base - and tilts his shoulders to raise his elbow. These actions can help prevent forearm flyout and allow Thompson to use his triceps to apply force to the baseball.

At foot plant, Thompson's forearm is barely above horizontal, so he is still engaged in active external rotation. Because he is still actively externally rotating his pitching arm the baseball is moving toward first base when his elbow starts moving toward third base. This is a more extreme example of reverse forearm bounce, when the elbow and baseball move in opposite directions.

Thompson does not actively pronate on either his fastball or his curveball. On a more positive note, there is no evidence of supinated releases either. I wasn't able to identify any change ups from the pitches I captured.


Dr. Mike Marshall Training: Javelins and Bucket Lids

May 18, 2009 • Training

I've been a bit busy lately with another project of mine, so I have been slacking a little when it comes to this blog. There isn't much substance to this post, but it's better than nothing.

This is another video that was filmed, edited, and produced by Dr. Marshall's students. It shows several of them performing some of Dr. Marshall's more unconventional training drills. In the video, they throw javelins and bucket lids.

The video quality isn't spectacular, and its producer added some background music (as well as a lengthy credits sequence at the end). I'd suggest muting the video, but then you wouldn't hear the commentary.

The pitchers perform the same exercises that they performed with the wrist weights and iron balls. The projectiles in this video are lighter, though not quite as light as a baseball.

These drills are more about neuromuscular fitness - joint action timing and sequencing or "muscle memory" - than they are about strength and durability. If I understand correctly, they are used to help learn and "perfect" Dr. Marshall's motion rather than to maintain it.

The bucket lid drill, designed to teach the appropriate axes of rotation for pitched balls, seems like it would also provide a decent "report card" for the release and spin of each pitch.