There are no stations on YTTV... its strange at first, but it KNOWS what you want to watch. Kinda scary. Either way, I got the sunday ticket for like 99 bucks... every game, no matter what.
In this case, you'd have to find the TV map for the game, figure out a zip code that has the game being showed, and feed your VPN that location and then tell YTTV that's where you are. Should work.