Samit Sarkar (Destructoid)
Twitter and the gaming community has a strange overlap with those who care about sports. There's a split between the athletic-obsessed and everyone else. (The latter usually complains about, thus ironically contributes to, the sports-related tweets they can't stand.) Samit Sarkar is a great bridge between these parties.
If you care about NFL, NHL, or MLB in any fashion, his Twitter is as informed as they come. His tweets extend beyond this niche, of course, so even if he is a Yankees fan, Sarkar is a fellow worth following.