I think a lot of you are misinterpreting tiger's posts. He doesn't want him to completely change his game, just look to drive the ball in hitter's counts. This being the same approach Ichiro takes. He seems to do alright with it as a leadoff guy, looking to drive hitter's counts and slap into play pitcher's counts. When you slap the ball, just trying to put the ball in play, you get a lot of weak outs. When you are more selective different parts in the at bat you draw more walks and get more extra base hits. If you are ahead in the count, the pitcher has to throw a strike or walk you. They can't nibble on the corners. This means you'll probably get an easier pitch to hit which means it will easier to drive for extra bases. When you hit a double, you don't have to risk getting caught stealing. His OBP probably wouldn't suffer, it might actually improve, and instead of being "pesky" he'd be dangerous.