Video: Pence, Phillies knock off Astros in 10th

After an error in the ninth inning that tied the game, Hunter Pence hit a walk-off home run. (David Maialetti/Staff Photographer)

Video: Hunter Pence hit two home runs, including a walk-off in the 10th, as the Phillies beat the Astros, 4-3 at Citizens Bank Park. The Inquirer's Marc Narducci reports.

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