Pedro Alvarez stepped to the plate ready to strike in a big spot. Once again, he delivered. Alvarez hit a three-run homer to cap a five-run seventh inning and Jason Grilli retired Emilio Bonifacio on a bases-loaded grounder to end the game, giving the Pittsburgh Pirates a 5-4 victory over the Chicago Cubs on Thursday. Read more http://scores.espn.go.com/mlb/recap?gameId=340410116&teams=pittsburgh-pirates-vs-chicago-cubs