Great Lakes Brewery has some good walleye, and is relatively close to downtown/the stadium...
http://www.greatlakesbrewing.com/brewpub/food-and-beer/menuHowever, maybe you can prolong your craving until next week and follow my advice for some pregame eats this year...
Head to Little Italy for The Feast (of the Assumption)!!!!!!
Stromboli's, canoli's, cavatelli, etc...every Italian dish you can think of cooked from family recipes with vendors lining the streets. Beer filled parties in beer tents and gambling in the church...what more can you ask for before a preseason game?!