Isn't this "aggressive approach" something that can be attributed directly to Coop, since that was the way he played the game? As a player, walks were pretty much an afterthought for him, but he was such a good hitter he was able to be very productive without the high walk totals that you'd expect from a selective hitter. That's probably the way Tejada plays too, but if Berry is teaching Pence and Bourn to go up there hacking it isn't working.