The ST format that most people used might work:
4/8 vs Phillies, Game 3
4/9 @ Mets, Game 1
I'm not really a huge fan of having the date in the title when you can get it from the timestamps in the posts, but admittedly that requires going into the thread. Then again, I never remember games by their dates, I remember the series and roughly what time of year it was, so I don't personally see the benefit of showing the date anyway.