Due to the episode being aired out of order (it was intended as the season 2 finale), there are several continuity errors including no one knowing how to pronounce Xela, Penny being single, and Dave and Alex still being apart.
The gang's team batting order changes mid-game after Alex rallies them.
At Dave's first shown at bat in the first game, the announcer says they are two outs away from losing. Dave strikes out and, during the rally, strikes out again. That should have been the game-ending third out.