Article Photos: Werth hits walk-off homer to keep Nationals alive in NLDS



Paul Sancya/AP Mark DeRosa has appeared in 22 playoff games with Atlanta, the Chicago Cubs and the St. Louis Cardinals, but he was left off the Nats' postseason roster.

Paul Sancya/AP Mark DeRosa has appeared in 22 playoff games with Atlanta, the Chicago Cubs and the St. Louis Cardinals, but he was left off the Nats' postseason roster.