I haven't been to SD since '02, but I think I can remember some places. The most fun I had in the Gaslight District was at Dick's Last Resort. No TV that I remember, but it is loud and you have to be careful not to get overrun by the food fight that always seems to break out. Good local band played a lot of Santana during the late hours. I would go there after the game in the evening.
Head on out to the west side of Mission Bay to the location on the north side of the wooden roller coaster in Belmont Park. West Mission Bay Drive dead ends into this location. The street is called Ventura Place. I don't remember the name of the bar, but it is open without glass in the windows and doors. It will be open during the early afternoon, which is game time. They will have plenty of TV's to watch and it would be quiet enough to hear the sound. It is about 5 businesses in from the beach.
If you find these places, hoping they are still there, let us know on this thread if you stayed, how was the food and did you enjoy the game.