Archive for minor league baseball

Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

Summary
Beck’s all-around profile merits consideration.

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Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

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Reymin Guduan, LHP, Houston Astros (Profile)
Level: Rookie-Advanced   Age: 22  Top-15: N/A   Top-100: N/A
Line: 7 IP, 5 H, 2 R, 6/4 K/BB, 1.29 ERA, 3.97 FIP

Summary
Can you feel the heat?

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Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

Summary
This converted reliever has shown some positives and negatives in his first year as a professional starter.

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Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

Summary
Black might have the most velocity of any minor leaguer.

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Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

Summary
A small Venezuelan southpaw, Lopez has command of three solid pitches at a young age.

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Each weekday during the minor-league season, FanGraphs is providing a status update on multiple rookie-eligible players. Note that Age denotes the relevant prospect’s baseball age (i.e. as of July 1st of the current year); Top-15, the prospect’s place on Marc Hulet’s preseason organizational list; and Top-100, that same prospect’s rank on Hulet’s overall top-100 list.

Summary
Part of the Jake Peavy bounty, Montas combines premium arm speed with a few other developing skills.

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When the Rangers signed then-16-year-old Dominican Ronald Guzman in July 2011 for a whopping $3.45 million bonus, the 6’5″ hulk was said to profile as a corner outfielder with a big bat–the best offensive asset in the 2011 international amateur class. Over two years later, he remains a promising hitter–he hit .321/.374/.434 as a 17-year-old in the Rookie-level Arizona League and followed it up by posting a .272/.325/.387 line as an 18-year-old in Low-A this past campaign. He’s only gotten into 101 games due to a few injuries, but so far, Guzman’s offensive development is going about as well as the Texas front office probably hoped for. The other part of his profile, though, has changed.

Guzman was moved to first base almost immediately after signing. He has played in the outfield exactly once as a professional, back in 2012 for five innings to make room at first base for a then-rehabbing Mike Bianucci. To be fair, Guzman has played on teams that have featured notable outfield prospects like Nick Williams, Lewis Brinson, and Nomar Mazara, but his mooring to the game’s easiest defensive position at a young age owes far more to his lack of ability in the field than it does to his teammates. Guzman’s arm was widely panned as an amateur, he has a massive, sloping frame that doesn’t look built for speed (and will likely be even less so as he fills out), and he has a very odd gait that looks like he’s jogging on eggshells. Add it all up, and Guzman is, as WFAA’s Kate Morrison put it, “a first base prospect, not an outfielder/first baseman…but an honest-to-goodness stuck-at-first guy.”

In this post, I’m going to talk about the damnation of that designation.

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A little over a month ago, I wrote this piece, examining how minor league catchers cut down on their passed ball rates over time. Indeed, anyone who peruses Baseball-Reference minor league catcher pages probably notices the tendency for teenage backstops to let pitches by them at alarming rates, only to ultimately settle into a more acceptable range as they reach their mid-twenties. On at least an anecdotal level, one can observe a similar phenomenon with left-side infielders–third base and shortstop are the most error-prone positions, and these tendencies can be blown up by inexperience. The worst qualified fielding percentage by an MLB shortstop in 2013 was Jed Lowrie‘s .962, and the worst from a qualified third baseman was Pablo Sandoval’s .940, but in, say, the Low-A South Atlantic League, ten of the fourteen third basemen who got over fifty games at the spot fell below that .940 fielding mark, and twelve of the fifteen shortstops didn’t break .962. And the short-season levels are a level of magnitude worse than that.

As with catchers, then, we can assume that left-side infielders cut down on their error totals significantly as time goes on. In this piece, I’m going to examine the development of shortstops in this area.

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Just about anyone reading FanGraphs probably knows about the debate surrounding defensive statistics. About the only thing everyone seems to agree on is that all defensive statistics are inadequate reflections of defense, or at least need extremely large sample sizes to attain reliability. This is especially true with regard to catchers, whose defensive contributions are quite the riddle to solve.

These issues extend even more in the minor leagues, where the sole widely available statistics are the traditional ones–assists, putouts, errors, double plays, range factor, and fielding percentage. Needless to say, these are not broadly effective arbiters of defensive aptitude. Again, catcher defense is arguably even more elusive, with passed balls and caught-stealing percentage the only remotely notable metrics. The desperate search to link numbers to potential leads these stats to often stand for “receiving skills” and “throwing arm,” respectively, which is a gross overstatement of their utility.

In this post, I want to examine just how meaningful, or perhaps meaningless, the passed ball statistic is for catching prospects.

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