In the Epcot resort area, now that ESPN is gone, I think Shula's Lounge is probably the best sports bar spot to catch a game.
If you don't mind bussing somewhere, Rix Lounge in Coronado is also very good. If you're lucky, you can catch the game in one of the outdoor bars (on Sundays with multiple games, most of the outdoor bars may only have 2-4 TVs and your game might not be on - you can request it from the bartenders if there's not already high demand for something else. Many of the resort bars don't have game plans for non-regional games - they just get the regular ESPN/ABC/NBC/CBS type feeds - Cabana Bar at Dolphin, Bar Riva at Riviera, and Banana Cabana at Caribbean Beach (both accessible by Skyliner from Epcot)
Disney Springs has plenty of spots if you went over there - City Works, Splitsville,