Here's a video of the cat on Wrigley Field last night.
Update: I had trouble with the link, but I fixed it.
Update: Here's something from the video's comments section at YouTube
I was sitting front row in the right center field bleachers. the cat ran right into my back, then jumped into a girls lap...then hopped into the basket, then didn't know what direction to go and jumped onto the field, landing on its head (i guess they dont always land on their feet...)