I was aware that Fox had scheduled repeats tonight, despite the early start for game three of the NLCS between the Phillies and Giants (go Giants!). The game started at 4:20pm ET and was wound up a pitching duel that went a mere two hours and thirty-nine minutes.
What I wasn't aware of (I admit, I hadn't looked at the schedule!) until I heard it from Joe Buck was that while Glee and Raising Hope are repeats tonight, the low-rated dead show walking that is Running Wilde is airing a new episode at 9:30p ET/PT.
Playoff games sometimes approach four hours, which would've pushed it into primetime, though Fox might have made the decision to air repeats before it even knew the LCS schedule and whether or not the game would start in primetime.