Throughout his career it has been intimated that Javier Vazquez has the stuff of an ace but the track record of a back of the rotation starter. He has excellent peripheral numbers (3.45 K/BB), a better than league average ERA (107 ERA+) and averages well over 200 innings per season. Above average performance and lots of innings should be a winning combination, but Vazquez has always seemed to underachieve when it comes to his won-lost record. His four postseason appearances haven't been pretty either.
Plenty of Yankee fans are worried that he doesn't have the make up to pitch in New York. Vazquez bombed in the second half of his only season with the Yankees and served up perhaps the most infamous home run in Yankee history. But all of that was more than 5 years ago and the latter was the result of one pitch. Ozzie Guillen ran him out of town in Chicago after
calling him out for not being a big game pitcher, but Guillen was supposedly responsible for ousting Nick Swisher too and that worked out pretty well for the Yankees.
Does Javier Vazquez's performance get demonstrably worse under pressure, or has he been a victim of marginal teams and bad luck? Is his reputation as someone who shrinks as the expectations grow deserved, or is it the conflation of a few unrelated events?
As I attempt to take a deeper look into these questions, I'm going to go back to something Tom Tango said during
his Q & A with Mike Silva last week. In the process of
justifying FIP as a useful statistic, Tango pointed out that there is a strong correlation between the best pitchers in the league over a long period of time when ranked by FIP and ERA.
Those familiar with the two stats might take that for granted at this point, but it's fairly remarkable considering all the things that FIP totally disregards that factor into ERA: singles, doubles, triples, runs allowed, etc. What's more intriguing, he contends, is what the significant gaps between FIP and ERA over the long term can tell us:
Tom Glavine’s career FIP is about 0.50 runs worse than his career ERA. This signals that Glavine does something extra, either he can sequence his events better (leaves alot of runners on base for example), or he has better control on his balls in play. And Javy Vazquez’s ERA is about 0.30 runs worse than his FIP, which signals something different, that perhaps he gives up alot of doubles, or doesn’t sequence his events well, etc.
Overall, two-thirds of pitchers will have their FIP and ERA be within 0.20 runs of each other, and almost all will be within 0.40 runs of each other.
That’s the power of FIP: that it’s designed to tell you one specific thing, and it tells you a second, perhaps even more important, thing.
So what's that thing? That's the million dollar question.
One interesting fact is that Vazquez has been extremely consistent in under performing his FIP throughout his career. He's only had an ERA lower than his FIP twice in his 12 professional seasons and only then by the slimmest of margins.
Even in his career year with the Braves last season, his FIP was lower than his ERA (his low FIP was one of the reasons
Keith Law included him on his Cy Young ballot). I think we can agree that this not just the result of random chance: there is something about the way that Vazquez pitches that causes him to have an FIP lower than his ERA.
So what is it about Vazquez's pitching that could be causing this? Let's look at the career FIP/ERA differentials for Vazquez, Glavine as well as Andy Pettitte:
Above, Tango says that almost all pitchers will have an FIP and ERA within .4 of each other, so keep in mind that we are looking at two outliers extreme outliers here in Vazquez and Glavine. This is the main reason I chose to include Pettitte, who is closer to the norm.
If you're a Yankee fan, I bet you're a little surprised that Pettitte's differential is closer to Vazquez's than Glavine's. Pettitte has the reputation of being able to bear down and pitch better when it matters and seems to induce a lot of double plays, both of which would lower his ERA but not FIP. But the numbers indicate that he's not as great at controlling his outcomes as many assume.
As Tango mentioned above, one thing that might inflate ERA independently of FIP is giving up a lot of doubles. (Numbers are normalized over 200 IP to account for different career lengths):
Vazquez and Pettitte give up more two-baggers than Glavine does, but four over the course of 200 innings doesn't seem like enough to account for a shift in 3/4 of a run in ERA. Furthermore, Vazquez and Pettitte give up doubles at a nearly identical rate, but the latter has an FIP significantly closer to his ERA. There's something else at work here.
The other possibility that is mentioned above is "sequencing". Maybe Vazquez gives up hits in a way that hurts him. For example, starting an inning with a walk before a double often results in a run scored and a man on second. Conversely, a double before a walk likely means men on first and second without a run scoring. Vazquez gives up his fair share of home runs as well, and they are obviously more harmful with men on base (something that doesn't show up in FIP but does in ERA).
A quick and dirty way of teasing this out of the data is to look at a pitcher's stats with men on base. The numbers below are shown in
tOPS+, which compares a pitcher's performance in a given scenario to his performance in other situations. (
A score of 100 means is a pitcher is average in that situation while anything lower means they were better and higher means they were worse)
One caveat: the bases loaded data is by far the smallest sample size of the bunch. Vazquez has faced 163 batters with the bases loaded while Glavine and Pettitte have 428 and 237, respectively. That said, there is a major difference between Vazquez and the other two (particularly Glavine) when it comes to their performance with men on base and especially with the bags packed. And those situations are the ones that separate FIP from ERA the most.
Now let's look at how each pitcher performed based on the score of the game, again using tOPS+:
The smallest sample size in this case is "> 4R", but even for Vazquez that includes 811 plate appearances. Pettitte has the most favorable distribution, pitching his best when the game is close and his worst when it is out of hand. Vazquez, however, is just about average in tight games but much better when the lead or deficit is greater than 4.
Now let's put the last two items together. Baseball-Reference's Leverage stats take into account the occupancy of the bases as well as the score of the game, as does
FanGraphs Clutch stat:
This tells a slighty different story about Pettitte but affirms what's becoming a trend for Vazquez - he doesn't perform as well in high leverage situations as he does in lower ones.
Does WPA agree?
Yes. It appears that Vazquez has not given his team as good of a chance to win as either Pettitte over Glavine over the course of his career, but this is to be expected to a certain degree because WPA is tied more closely to ERA then FIP. In a sense, we already knew this.
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So what do we make of all this?
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It's tempting to use these stats to claim that Vazquez can't handle pitching in New York. His data seem to trend very uniformly (remarkably so) from good to poor as the leverage increases. However, why didn't he cripple under the weight of the New York media in the first half of 2004 when he had a 3.56 ERA in 118 2/3 IP and won 10 games?
To say that he can't handle New York not only gives too much weight to a small sample size but requires a jump that conflates the pressure of in-game situations to be analogous to the demands of pitching for one franchise or another. Does the weight of overall expectations have the same effect on performance that increases in in-game leverage do?
Well, maybe. As 'Duk from Big League Stew
pointed out in September, Vazquez's best seasons in terms of ERA+ have come with teams that were out of contention and his worst years came with teams in playoff races:
Three of his top ERA+ years came in the anonymity of Montreal and one came for the 2007 White Sox, who went 72-90. This year's ERA+ of 139 equals his career-best with the 2003 Expos, but while the Braves stuck around as a potential contender for longer than expected, they didn't occupy striking distance space for long.
Meanwhile, Vazquez's worst ERA+ years — with the exception of his first two seasons — all came with contenders: the '04 Yankees, the '05 D'Backs and the '06 and '08 White Sox.
So what is he doing wrong? As we saw when trying to identify some
differences between A.J. Burnett's good and bad starts last week, it's extremely difficult isolate any one underlying factor or find a specific reason that Vazquez's numbers go bad as the leverage of the game increases. Javy's K/BB ratio slips from 4.34 to 3.26 to 2.57 as the leverage rises from low to medium to high. His batting average, on-base and slugging percentages all ascend with the gravity of the situation as well.
Even if you grant that Vazquez gets worse under pressure and will pitch worse just by virtue of being a Yankee, he's still likely to be better than league average and throw more than 200 innings. It would be extremely difficult to do that and not add significant value to a team regardless of how his performance is distributed by leverage.
And of course, there's a big difference between "hasn't" and "can't". I'm willing to say that Vazquez certainly
hasn't pitched well under pressure in his career, but not that he
can't. He clearly had a great year in Atlanta and
some of that has been attributed to an improved change up, giving him a second pitch to miss bats with in addition to his curveball.
FanGraphs shows that his curveball was what stood out last year, but his change up looked to be improved as well.
It's certainly not impossible that Javy has a good year and surprises his doubters (and even some of his supporters). Vazquez might be frustrating to watch at times in 2010, but the beauty of the situation is that our expectations for him shouldn't be that high to begin with. Not too many teams have the luxury of acquiring a very good pitcher and hoping that he's just average.
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