Archive for Player Analysis

Comparing 2010 Hitter Forecasts Part 2: Creating Better Forecasts

In Part 1 of this article, I looked at the ability of individual projection systems to forecast hitter performance. The six different projection systems considered are Zips, CHONE, Marcel, CBS Sportsline, ESPN, and Fangraphs Fans, and each is freely available online.  It turns out that when we control for bias in the forecasts, each of the forecasting systems is, on average, pretty much the same.  In what follows here, I show that the Fangraphs Fan projections and the Marcel projections contain the most unique, useful information. Also, I show that a weighted average of the six forecasts predicts hitter performance much better than any individual projection.

Forecast encompassing tests can be used to determine which of a set of individual projections contain the most valuable information. Based on the forecast encompassing test results, we can calculate a forecast that is a weighted average of the six forecasts that will outperform any individual forecast.

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Jeter, Ichiro, And 100 WAR

Recently, David Appelman introduced all of us to the Automated WAR grids. When I clicked into the WAR grids section, the top-25 all-time leaders in recorded MLB history was illustrated as the sample grid. I took some time to let the awe set in, admiring the absolute dominance of the true legends of the game who seem to transcend even the Hall of Fame.

One of the first things I noticed was that every one of them at least matched 100 career WAR. I got to thinking about which players we watch today that we may someday see on this elite 100+ WAR list. There were 19 players active in 2010 that have accumulated 50 career WAR or better. At the top we already see ARod at 120, the only current player who we know for certain fits into that super-elite status. After ARod there is Pujols, who has racked up 81 WAR to date and will likely only need 3 more seasons to join the club. The rest of the players on the list are all guys who are at least in their late 30s and many of them are on the cusp of retirement and/or are in dramatic decline. Realistically, there were only two other players who I thought may have an outside shot at 100 WAR: Jeter and Ichiro.

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Jason Hammel and the Oddity of ERA

ERA can be a weird thing at times. I love it, but it doesn’t always reveal the full story. Jason Hammel is the perfect subject. After six years in the Rays minor league system, and three bad stints with the Rays Major League club, he found himself looking up at a logjam of starting pitchers in Tampa Bay. The Rays traded him to the Rockies after the 2008 season in exchange for Aneury Rodriguez.

With the trade to Colorado, Hammel was given a great opportunity to start in the Majors for a full season. Since his arrival in Colorado two seasons ago, Hammel has been nothing but consistent. Take a look at his stats:

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The Next Jose Bautista

This article was originally posted at WahooBlues.com.

Jose Bautista took the baseball world by storm in 2010 when, after six MLB seasons of doing nothing in particular, he emerged as a candidate for AL MVP. Compare his 54 homers, 124 RBI, and .995 OPS in 161 games last year to the 59 homers, 211 RBI, and .729 OPS he posted in nearly 600 games from 2004-09. Using WAR/PA, Bautista was more than 11 times better in 2010 than he’d been for the rest of his career.

Interestingly, Bautista’s breakout came just a year after Ben Zobrist came out of nowhere to become the second-most valuable player in baseball. After hitting .222/.279/.370 with just 15 homers, 57 RBI and -0.5 WAR in roughly a full season’s worth of games from 2006-08, Zobrist went bananas in 2009, hitting .297/.405/.543 with 27 taters, 91 knocked in, and 8.4 WAR.

Besides the fact that no one expected monster breakouts from either of them, 2009 Zobrist and 2010 Bautista had some interesting things in common. Both had extensive experience in the big leagues but neither had done anything particularly impressive. Both entered their seasons with at some questions about what their roles would be. And both had enjoyed out-of-nowhere power surges during their respective previous Septembers.

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Another Look at Arod’s 2010 Peformance Against Lefties

This post originally appeared on The Captain’s Blog and is a followup to one published at both the Yankeeist and Fangraphs’ Community Forum.

Over at the Yankeeist, Larry Koestler took a look at one of 2010’s most curious mysteries: Alex Rodriguez’ shockingly poor performance against left handed pitchers. Using pitchFX data, Koestler concludes that the pitch selection of opposing southpaws (i.e., fewer four seamers and more cutters, two seamers and sinkers) contributed to Arod’s struggles (while also conceding the limited sample size), but could the answer be much more benign?

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A PitchFX Look at A-Rod’s Bizarre Reverse Platoon Split

This post originally appeared on Yankeeist.

It’s no secret that Alex Rodriguez produced the lowest full-season wOBA of his career in 2010 — his .363 mark was fueled by career-lows in batting average (.270), on-base percentage (.341) and the second-lowest full-season SLG of his career (.506). That these numbers were not only dramatically off from his superb 2009 (.286/.402/.532; .405 wOBA) but his majestic career triple slash (.303/.387/.571) suggests to me that he should be due for a reasonable bounceback. While it’s not impossible Alex has reached an irreversible decline, he’s been too historically good for me to be willing to write him off just yet. I won’t go so far as to proclaim that the Yankees are going to be getting .400-plus-wOBA A-Rod back, but as I’ve noted on at least one occasion this offseason, all A-Rod needs to do is exercise just a tad more patience and a wOBA in the .380s should be more than doable.

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Why I Can’t Ignore Stats

If some of you have been active in following your Hall of Fame voters, you probably read this post on Jon Heyman discussing his ballot. He spent the majority of this piece stating why he didn’t vote for Bert Blyleven, and then he explained why he voted for Jack Morris instead. I promise this is not intended to be a “Vote Blyleven, not Morris!” post, because I’m more interested in something else. Heyman claims that Morris had a bigger impact in his games than Blyleven. Well then, what happens if I never experienced this impact?

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Gallardo Must Throw More Strikes

Of 132 starting pitchers that have thrown at least 100 innings this season, Brewers’ right-hander Yovani Gallardo has the third lowest O-Swing% in the majors at 24.8%.  That means opposing hitters swing at 24.8% of his pitches that are outside the strike zone.

Even Nick Blackburn and Brian Bannister get more swings at pitches outside the zone.

Common sense suggests the better a pitcher’s repertoire, the more hitters will chase bad pitches.  Therefore, we would expect Yovani Gallardo to have below-average stuff and a lower strikeout rate because he gets fewer hitters to chase bad pitches.

That is, we would expect that to be the case if we merely looked at Gallardo’s O-Swing% in a vacuum.

As it turns out, Gallardo gets very few hitters to swing at pitches outside the zone because hitters rarely swing in general with Gallardo on the mound.  His 40.8% swing rate is the fourth lowest in the majors (min. 100 innings).  Not only that, but hitters also do not make contact often with his pitches when they do swing – as evidenced by his 79.6% contact percentage and 8.3% swinging-strike percentage.

We can infer from these numbers that hitters flat-out do not see Gallardo’s pitches very well from the mound.  Hitters do not swing often – and when they do, they do not make much contact.

In short, Gallardo has well above-average stuff.  His 92-94 MPH fastball is a plus-pitch, and his spike curve can be deadly when he is not spiking it before it reaches the plate.  Moreover, Gallardo has developed a slider, which is arguably becoming his best pitch.

So, how can Yovani Gallardo transform himself from a top-tier #2 pitcher to a full-fledged ace?

The answer appears to be simple.  Throw more strikes.

Of the starting pitchers that have thrown at least 100 innings in 2010, Yovani Gallardo throws the 7th fewest balls in the strike zone. (Livan Hernandez is predictably number one).  That high-percentage of balls outside the strike zone would be acceptable, but as we have established earlier, Gallardo does not induce many swings outside the zone.

That obviously leads to higher walk rates, higher pitch counts, and lower innings totals.  Those are all things that must change for Yovani to be a true ace in Major League Baseball.

Many of you are likely thinking: “Of course Gallardo should throw more strikes. That is an obvious statement.”

Not necessarily.

Some pitchers, such as Livan Hernandez and Jamie Moyer, live on throwing balls outside the strike zone.  They do not have good enough “stuff” to live by throwing strikes.  They have contact percentages north of 92% on balls inside the zone, so they bait hitters and get them to swing at poor pitches.  Both of them have literally made a career avoiding the strike zone

Gallardo is not that type of pitcher.  It seems opposing hitters have decided their best chance to reach base is to actually not swing at all, merely hoping the upcoming pitch is a ball – which it is 57.4% of the time.  That accounts for the high pitch counts, the low walk totals, and the low inning totals.

The only worry about Gallardo throwing more strikes is that more balls would then be put in play, which may not be a positive outcome with Milwaukee’s below-average defense.  It could effectively be argued that Gallardo is better suited to stick to walks and strikeouts – though the Brewers’ front office should work to solidify the defense this winter.

Throwing more strikes would lower the pitch counts, lower the walk rates, and increase the number of innings pitched without sacrificing production on the mound.  Opposing hitters do not make much contact whether or not Gallardo throws the ball in the strike zone, so he may as well cut the walk rate and work in the strike zone much more often.

His development of a slider should aid that mission.  That spike curveball cannot be thrown consistently for strikes, but his new slider (sometimes cutter) can be thrown for a strike on any count.

Perhaps that is the missing piece that can help Yovani Gallardo transform himself into a bona fide ace for the Brewers.  Or perhaps the right-hander simply needs to make a conscious effort to not nibble.

Whatever the case may be, everyone certainly knows the Brewers organization could certainly use an ace.  Milwaukee’s success in 2011 may hinge on whether or not Gallardo is able to take the next step in his development – which seems to be consistently throwing more strikes in every start.


Wainwright Throws Fewer Fastballs, Increases Effectiveness

Adam Wainwright’s strikeout rates keep increasing. In over 400 innings in AA and AAA during his age 21-23 seasons, his strikeout rate was 7.8 per nine innings. When he was elevated to the majors in 2006 as a relief pitcher his strikeout rate took an expected jump to 8.64 K/9. At the time he was throwing his curveball 25.9% of his pitches. A return to starting the following year led to a decrease in both his curveball use (18.6% in 2007 and 17.9% in 2008) and his strikeout rate (6.06 K/9 in 2007 and 6.20 K/9 in 2008).

In 2009, Wainwright made a change in his pitch selection, reverting back to the curveball percentages from his bullpen tenure. The increase in curveball use (24.0% in 2009) increased his strikeouts per nine to 8.19 and turned him from an above-average pitcher (3.90 and 3.78 FIP in 2007 and 2008, respectively) to a Cy Young contender (3.11 FIP). The increased use of the curveball in 2009 also increased its effectiveness, doubling to 2.71 wCB/C. The effectiveness on his slider tripled. Unfortunately, his fastball decreased in effectiveness, going from essentially average to -.75 wFB/C.

In 2010, Wainwright has taken his curveball use to another level, increasing to 28.5% of his pitches and his strikeout rate to 8.26 K/9 and lowering his FIP to 2.86. He has not sacrificed control, lowering his walk rate to 2.21 BB/9. His curveball and slider, which may be more of a cutter, have been slightly less effective, but still very useful pitches. The significant change has occurred in the effectiveness of his fastball. Wainwright has decreased the number of fastballs thrown to a career low 46.5% of pitches. With this decrease has come a drastic increase in the effectiveness of the fastball without changing the velocity, moving to 1.00 wFB/C from last year’s total of -0.75 wFB/C.

Also of note, increasing his strikeouts has not affected his efficiency, with 15.7 P/IP in 2007, 14.8 P/IP in 2008, 15.5 P/IP in 2009 and a career low 14.6 P/IP in 2010.

Wainwright has remained effective this season throwing the third highest percentage of curveballs of any pitcher. (Only Wandy Rodriguez and Gio Gonzalez have thrown a greater percentage of curveballs this year.) When you have the curve he has, you can’t blame him. The consequence, whether inteneded or not, is a sea change in the effectiveness of his fastball.  Another Cy Young-caliber season at a bargain price for the Cardinals.


Another Look at Mauer’s Power

Again looking at leaderboards, I noticed that only one of the top 10 hitters by batting average has fewer than 10 home runs; that would be your 2009 American League MVP, Joe Mauer.

Mauer is hitting .324 through 127 games and, barring a disaster to end the season, will finish as a 5-WAR player.  It’s a far cry from his 8-win 2009 season (which no one could reasonably expect him to repeat), and just looking at his lines across the two seasons, it’s not hard to see where the difference is.

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