Often when I ask Will what he wants to do, his response will be "ball!". Which is his way of communicating that he wants to play baseball. Sidenote - it's also a common response when I ask him if he wants to sing a song (Take me out to the ballgame). So we get out his Tigers cap and glove, and head outside to play with this toy. He knows to hit the ball with the bat, then run - he just sometimes gets confused about where he's supposed to run to.
Here's a video of some of the highlights from a game we played one afternoon.