Gary Sanchez Isn’t a Superstar Yet and That’s Fine
Brilliance in small samples can be intoxicating. Case in point: in a poll conducted by ESPN this preseason, 41% of respondents predicted Yankees catcher Gary Sanchez would slug between 31-40 homers this year. Another 10% called for more than 40. For reference, of the 38 hitters who reached the 30-homer threshold in 2016, only one of them (Evan Gattis) did work as a catcher.
On the one hand, it’s not difficult to understand the reason for that sort of enthusiasm. Sanchez was excellent in 200-plus plate appearances for the Yankees last year, hitting 20 homers and recording just over three wins in a wonderful late-season burst. On the other hand, expecting a player to continue that kind of pace — especially a young catcher with limited exposure to major-league pitching — is probably unreasonable.
I attempted to warn everyone about the pitfalls of such expectations back in March. From that post:
In the fantasy baseball world, only Buster Posey is being drafted earlier at catcher. Generally conservative projection systems forecast that Sanchez will be a star this season. ZiPS pegs Sanchez for 27 homers, a 112 wRC+, and a 3.4 WAR season. PECOTA’s 70th percentile outlook has Sanchez recording 33 homers, a .504 slugging mark, and 4.8 wins. And the Fans’ average crowdsourced projection for Sanchez is a .274/.344/.488 slash line and 5.4 WAR season. The Fans believe, in other words, that Sanchez and Bryce Harper are going to produce similar value this season. …
Even in Yankee Stadium II, Sanchez wasn’t a good bet to repeat his 40% home-run rate on fly balls (HR/FB). In fact, his current mark, just shy of 27%, is still well above average. And while Sanchez could go on to produce a monster second half, the first third of the 2017 season has been a reminder not to draw too much from a small sample.
It’s not that Sanchez has been a poor player to date; quite the contrary, in fact. He’s been an above-average hitter (121 wRC+) at a position where we rarely see such offensive production. He’s having a really good year so far. He’s just not the superstar many expected him to be in his first full season. He’s still one of the more valuable young players in the game, and we know all about his potential. But his .256/.343/.471 slash line better resembles a career minor-league line (.275/.339/.461) produced over nearly 2,500 at-bats than his briefer showing last season.