Last 42 games: 367/396/513 He does sport a .425 BABIP over that same time period and about 50% of his balls in play are grounders and he doesn't hit the ball particularly hard on average so he's getting lucky. I would wait until his luck recedes to see what you really have there before extending him. Note, I am not saying that the Brewers should not extend him, only that what he's doing right now is not indicative of who he is as a player.