The Perfect Game

Summary
Francine is excited about designing a model city for class until she starts the project and obsesses on the baseball stadium for her favorite team, the Grebes. Eventually she forgets about the whole project devoting everything to the stadium.

Trivia
After Muffy said that something finally happened right after the Grebes missed the final catch, there is an exact clone that looks like Arthur right behind Buster and Muffy. But the clone is a white aardvark with red glasses, light green sweater, khaki jeans, and green sneakers.