When Curtis Granderson came to the Bronx by way of Detroit much was made of his anemic track-record against lefty pitchers. Two-thirds of the way through his first season with the Yankees in 2010 he had done little to reassure anxious Yankee fans. When Joe Girardi held Granderson out of the starting line-up for a two-game set in Arlington on August 10 and 11, 2010 so that Granderson could work with hitting coach Kevin Long on what Long called "a total reformation" of his swing, he was having the worst offensive season of his career. Batting just .239 overall, he was particularly horrendous against lefties (.206/.243/.275).
In the 65 games in which he has played since being slotted back into the starting line-up on August 12, 2010, Granderson's numbers have increased dramatically (.270/.352/.604). Perhaps most surprisingly, he has been one of the more dangerous power-hitters in the game over that stretch. Only Jose Bautista (26) and Troy Tulowitzki (24) have hit more home runs than Granderson's 21 since that date. This season, Granderson is tied with 5 other players for the league-lead in HR's (7), having hit 5 in his last 7 games.
And – notwithstanding the SSS-caveat that must come with any look at a player's rate-stats in April – Granderson's numbers against lefties have been outstanding: 7-for-18 (.389) with a triple and 3 HRs (1.000 SLG).
No one should be particualrly surprised that Alex Rodriguez and Mark Teixeira have provided big power numbers so far this season, but the performance of Granderson (not to mention Russell Martin, who deserves his own early-season post) has been no less important in fueling the tremendous Yankee power-surge that has propelled them to first place so far in this young season.