Saving Detroit: Tigers Notes, 8/8/17

detroit tigers notes

While trades– including a trade of Justin Verlander– technically remain a possibility at this point in the year, it looks like the Detroit Tigers will content themselves with playing out the final two months of this season with their current crew and an eye toward the future. For this site, that probably means that the pages of this season’s Tigers diary will be a little emptier than they might be if the team were more aggressive in the trade market or competing for a playoff berth. That doesn’t mean that there aren’t interesting items to track, though. Here are a few:

    • Justin Upton: As highlighted here last week, Upton’s been trimming his bugaboo strikeout rate, but he’s continuing to strike out in bad situations. Since that post, he’s appeared in six games and added four two-out strikeouts to his total, pushing him into a tie for eleventh on the MLB-wide list (minimum 100 two-out plate appearances) in 2017. With 3.6 fWAR, Upton continues to be the team’s best position player by a comfortable margin, as well as its best overall player. In that post last week, I speculated that Upton is unlikely to opt out of his contract this offseason due, in part, to a weak market for corner outfielders with his profile. Over at The Athletic’s new Detroit vertical, Neil Weinberg is more optimistic about Upton’s open-market prospects, calling the “odds that Upton opts out . . . quite high.”
    • Miguel Cabrera: I’ve been working up a full post on Cabrera’s tough season, which has a good chance to be the worst of his career. (For a forward-looking analysis, my career comparison between Cabrera and Albert Pujols is here.) Besides the obvious drop in production, one thing that jumps out is his batting average on balls in play, which, at .296, is below .300 for the first time ever (career .345 BABIP). Last month, Weinberg did the logical thing and dove into Cabrera’s swing profile and batted-ball data tabulated by StatCast. The problem, from our perspective, is that there isn’t a ton there. Cabrera continues to rank high (currently number one, minimum 200 at bats, by a large margin) on the xwOBA-wOBA chart, an indication that he’s making good contact despite poor results. From watching games this season, it seems like Cabrera turns away from inside (but not that inside) pitches more often than in years past, which makes me wonder if he simply isn’t seeing pitches as well. (Weinberg noticed that he’s swinging less often than usual at inside pitches.)
      When observing the decline of a great player, it can be fun to take a break from the dissection to remember his youth, which the remarkable achievements of Mike Trout and Bryce Harper gave us occasion to do today:

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Catching Fire: Heading for the exit velocity

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Thanks to MLB Advanced Media’s new Statcast technology, fans can learn more than ever about the activity taking place on the field (and off it) during a baseball game. One such aspect into which Statcast offers insight is exit velocity, which refers to the speed with which a batted ball leaves a hitter’s bat. These velocities can communicate something meaningful about batter success. (Very generally, and possibly very obviously, higher exit velocity is better.)

Statcast came on-line last season, but there were significant flaws in its batted-ball data gathering in 2015. The shortcomings in the 2015 data will affect any analysis that relies on Statcast information from that season, and while Statcast seems to be doing a better job of gathering a more complete set of batted-ball data this year, some imperfections remain. Fortunately, it appears that those imperfections– apparently due in part to differences in hardware installations at each park– can be accounted for. Baseball Prospectus now publishes something called adjusted exit velocity, which aims to control for various influences on Statcast-measured exit velocity that are outside batters’ control. (None of those adjustments can recapture the data the system failed to collect in 2015, of course.)

Early in the season, I went to the Statcast well to compare home runs by Anthony Gose and Giancarlo Stanton. The purpose of this post is not to undermine lazy media narratives but to present a simple comparison between various Detroit Tigers’ adjusted exit velocities in 2015 and so far in 2016.

Keeping in mind the imperfections in the source data, here are the 2015 and to-date 2016 adjusted exit velocities (in miles per hour) of the Tigers’ primary hitters who played for the team in both seasons:

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While recalling that we still are dealing with small sample sizes for 2016, particularly for James McCann, who’s spent much of the young season injured, and Anthony Gose, who now is down in the minors, I’d guess that the differences in adjusted exit velocity roughly comport with how well fans think each hitter is performing this year: Miguel Cabrera hasn’t heated up yet; J.D. Martinez has been struggling since moving to the second spot in the lineup after a hot start batting deeper in the order; Nick Castellanos has been breaking out; Victor Martinez is healthy again and showing it; Ian Kinsler seems to be in fine form yet again (credit those Jack White-designed bats?); and Jose Iglesias is continuing to rely on weak contact.

Cabrera was second overall in adjusted exit velocity last season, so his drop-off seems like a possible source of concern. Sluggers like Cabrera can take a while to warm up, though, so it’s not unreasonable to think that his adjusted exit velocity will climb as the current season progresses. (Cf. Giancarlo Stanton, 2015’s adjusted exit velocity champ, who, so far in 2016, is down 9.4 MPH.)

The elder Martinez has the largest change of any of the highlighted batters in either direction, but his 2015 doesn’t offer much of a baseline because he was playing through obvious injury. It therefore is reasonable to assume that some portion of that +3.0 MPH of adjusted exit velocity is due to a return to health.

Not only do these changes in adjusted exit velocity correlate with anecdotal observations of these players this season, but they also– loosely but consistently across this sample– track changes in raw power (measured as isolated power, or ISO):   Continue reading

Flying Tigers: Closing the Book on 2013

Rock and Roll never forgets, and neither does ALDLAND. Last season, I took a look at whether the Tigers struggled to score later in games, a trend that, if shown and in combination with the team’s bullpen woes, would make comeback wins less likely. While the preliminary numbers suggested I was onto something, the trend appeared even more pronounced with one-hundred games’ worth of data. The purpose of this post is to make good on the promise implicit in that last one by completing the full season’s worth of data.

First, an aside on data collection. I previously gathered and organized these inning-by-inning run totals by hand because I didn’t realize Baseball Reference actually tracks that information. In order to maintain the same error potential, and because B-R doesn’t separate the runs/inning between wins and losses, I’ve updated (a simplified version of) my chart as I did before.

r-in 2013

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