This oughta be an interesting game. It seemed easy at first (really, where's the defense?), but the more I look at it, the more I realize that it'll take a great robot and driver to get the top scores.
It seems like the tennis ball will be a beast to score, given the lack of field barriers (you can't just spit it out like the bottles, or it'll roll out), but that might just be the speculation of someone who's never tried.
This might be reason enough to break out the ol' Vex kit...