Kepler could bat .500 if he'd just bunt for a hit to the left side every AB until they stopped shifting. He has the entire left side available, doesn't even need to be a good bunt. He just refuses.
He pulled the ball on 3 hops to the 2nd baseman all the time. Teams eventually didn't even bother playing a right fielder against Mauer. If he COULD pull the ball in the air, why didn't he?