It's early in the season, so statistical anomalies are everywhere. One of the biggest ones come among those prospects who are off to hot starts, especially with the batting average, and many of these players are getting the help of extra balls in play falling in.
It doesn't mean they are going to come crashing back to earth, but it is important to understand that certain things are unsustainable. For example, last year, Cardinals outfield prospect Oscar Taveras batted .386 in the Midwest League, thanks in large part to his tremendous hitting ability, but also largely due to his .440 BABIP, a mark that is over 100 points higher than average. Even with a more realistic BABIP, Taveras would have had a great season, but he's obviously not a .386 hitter. No one is.
So before we get all jacked up about prospects off to red-hot starts this season, let's see which ones are getting the kind of help they shouldn't count on for the rest of the season.
- The Royals like what they have in Jorge Bonifacio, and pushed the young outfielder to the Midwest League at age 19, but he's not going to sustain the .393 BABIP that has helped him hit .320/.390/.446 so far this season. He's hitting more line drives than average, and did so last season as well, so his normal BABIP could be higher than average, but it's no where near this high.
- Ryan Brett is a personal favorite of mine, and is establishing himself as a nice second base prospect for the Rays, but .373 BABIP, thanks in large part to a groundball rate that's 10 percent higher than his league average and 15 percent higher than his rate last year have helped contribute to that. He'll have to continue to pound the ball on the ground to keep this up, which may help explain why his slugging percentage has dropped 62 points this season.
- The Yankees sent Gary Sanchez back in the South Atlantic League for the second straight season, and it's easy to make the claim that he's figured the league out (it happens!), but it needs to be noted that much of his .309/.360/.443 line can be attributed to his .410 BABIP. That's unsustainable, of course, but Sanchez his hitting line drives in 25 percent of his balls in play, up from 13 percent last year, meaning he's barrelling up the ball almost twice as often this season. It won't keep his BABIP over .400, but it does mean he's been hitting the ball better and not just getting lucky.
- Fellow Sally Leaguers Alen Hanson and Brent Keys are both having breakout seasons, and both can give at least some of the credit to their .396 and .394 BABIP's respectively. The Pirates and Marlins both like what their prospects have done, but neither should expect Hanson's fly balls to continue to leave the park at a 15 percent rate or Keys to keep hitting .382.
- Billy Beane is getting a lot of credit for the A's acquisition of Miles Head this off-season in return from the Red Sox as part of the package for closer Andrew Bailey, but Beane likely has much less to do with Head's .418 BABIP than does the ridiculously hitter-friendly California League.
- The Sox may be missing Head, but they are enjoying the play of Jackie Bradley, who's Carolina League-leading .368 batting average is being aided by his fifth-in-the-league .409 BABIP, this despite a below-average line drive rate and an above-average fly ball rate.
- When a player is hitting .411, his BABIP has to be unsustainably high, so don't expect Tigers 3B Nick Castellanos to keep up his ridiculous .482 BABIP, which is 84 points higher than the next highest player in the Florida State League.