On a night when Major League Baseball set a single-season home run record, the Pittsburgh Pirates and host San Francisco Giants didn't hit any. It's been the story of their four-game series, which ends Thursday afternoon when the Pirates hope right-hander Joe Musgrove (9-12, 4.67 ERA) is healthy enough to face Giants righty Jeff Samardzija (10-11, 3.64). The clubs have combined for just three home runs in the first three games of the series, with the Pirates holding a 2-1 edge in both homers and wins.