CHICAGO (AP) — Pedro 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. The Pirates trailed 4-0 heading into the seventh, but two big drives changed things. Pinch hitter Travis Snider cut the deficit in half with a two-run homer off Brian Schlitter.Read more on NewsOK.com