Watch: Starling Marte hits walk-off home run to beat Giants
Both teams scored a run in the fifth and Jung Ho Kang gave the Pirates a one-run lead in the seventh with his second home run of the day. Pittsburgh gave one back in the eighth when a Joakim Soria wild pitch allowed Matt Duffy to score and tie the game.
George Kontos struck out the first two Pirates he faced in the ninth, but Marte hit the first pitch he saw over the fence.
- Dan Gartland