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Mike Trout Somehow Found A Way To Get Better

As a general rule, baseball players — specifically, the non-pitching variety — tend to break into the majors in their early 20s, improve pretty rapidly over their first handful of seasons, peak around age 271 and then begin the inexorable decline toward mediocrity (and retirement). But some special players begin their careers with such a bang that it’s difficult to imagine how they could get better, at least without breaking the game as we know it.

Twenty-five-year-old Los Angeles Angels superstar Mike Trout is one of those players. During his first full MLB season in 2012, Trout burst onto the scene with 10.5 wins above replacement (WAR),2 a tally that not only led the majors but also ranked as the 14th-best season by a position player since World War II. He was only 20 at the time; if he followed the typical aging curve, a 27-year-old Trout would make Babe Ruth look like B.J. Surhoff. Or maybe Trout’s sky-high WAR meant he’d already peaked (in production, if not skill), simply because such a year requires a ton of good fortune and might not be repeatable in future seasons.

And through last season, even as Trout continued to build his case as the potential G.O.A.T., the 2012 campaign still stood as his greatest performance. But that might not be true anymore. Just a third of the way into the 2017 season, Trout is tracking for his best campaign yet.

2017 25 .350 .466 .757 .487 .407 17% 19% 7.0 -6.2 11.0
2016 24 .315 .441 .550 .418 .235 17 20 6.6 +3.9 10.0
2015 23 .299 .402 .590 .415 .290 14 23 5.0 +4.4 9.2
2014 22 .287 .377 .561 .402 .274 12 26 7.0 -6.4 7.9
2013 21 .323 .432 .557 .423 .234 15 19 6.8 -2.6 9.9
2012 20 .326 .399 .564 .409 .238 11 22 8.6 +16.3 10.5
2011 19 .220 .281 .390 .296 .171 7 22 6.0 +7.2 0.7
In almost every category, Mike Trout is playing better than ever

WAR and DEF (defensive runs above average) are an average of FanGraphs’s and’s metrics. SPEED is Bill James’s Speed Score, an approximation of a player’s running speed (using his rates of stolen bases, triples and runs scored), scaled where average is around 5.0. Per season numbers are scaled to a full schedule (1,200 defensive innings and 162 team games).


Trout is on pace for new career bests in almost every offensive category, from the conventional (batting average; slugging percentage) to the wonky (isolated power; walk and strikeout rates3). And while Trout’s batting average on balls in play is outrageously high — currently at .368, a number that would be unsustainable for most players — it’s not too much higher than his career BABIP of .360. The man is simply the best at hitting ’em where they ain’t.

At a more fundamental level, Trout’s plate discipline is approaching early-2000s-Barry-Bonds levels. (Maybe it’s no coincidence that Mets manager Terry Collins considered walking him with the bases loaded over the weekend.) He’s swinging far less at balls outside the zone but offering much more at balls inside the zone. He’s attacking the first pitch more than ever but working his way into some of the league’s highest rates of 2-0 and 3-0 counts. This strategy of selective aggression has only made the game’s top player even tougher to get out.

However, there are also some signs that Trout’s hot start will eventually cool off. Despite the incredible power numbers, his exit velocity is down pretty substantially from the previous two seasons, and he’s making the best kind of contact4 less than he did last year. Trout’s rate of home runs per fly ball — which measures how fortunate a player has been for his deep flies to find the stands (and not an outfielder’s glove) — is far above his career average. Even a player as great as Trout needs a dash of luck sometimes.

To surpass his epic 2012 coming-out party, Trout was always going to need some lucky breaks. But considering that some of the luck he received as a fresh-faced youngster is offset by his improved hitting skills, Trout really only needs a little bit of good fortune to put up career-best numbers. And so far, that’s exactly what he’s gotten.


  1. Or possibly older. But probably not.

  2. Averaging together the competing versions offered at and

  3. If Trout ended the season with his current stats in the latter two categories, they’d be tied with Trout’s 2016 and 2013 seasons, respectively.

  4. As measured by “barrels,” MLB’s designation for batted balls with a combination of exit velocity and launch angle that is associated with a batting average of at least .500 and a slugging percentage of 1.500.

Neil Paine was the acting sports editor at FiveThirtyEight.