Is Jason Bay really as great a base-runner as his 2009 numbers indicate?

Now, I have to admit, it is very difficult to pick up on one's base-running skills from simply watching the games. When a ball is put in play and it looks to be driven deep into the gap, I am thinking about the ball, and watching it gloriously sail into the space between the outfielders. I am not watching the players round the bases. At least not that often.