In Game 2 of the National League Division Series (NLDS) against the Atlanta Braves, Romo gave up two hits without recording an out; both runners scored as the Giants went on to blow a three-run lead and lose 5–4 in 11 innings. Romo replaced Sánchez in the eighth inning of Game 3 and allowed a go-ahead two-run home run to Eric Hinske but was charged with the win as the Giants rallied in the ninth to win 3–2. The Giants won the series in four games. In Game 4 of the NL Championship Series (NLCS) against the Philadelphia Phillies, Romo gave up an RBI double to Jayson Werth and was charged with a blown save, but the Giants won 6–5. He held the Phillies scoreless in his other two outings of the series (losses in Games 2 and 5), and the Giants won the series in six games. Romo made one appearance in the World Series against the Texas Rangers, throwing of a scoreless eighth inning in the Giants' 11–7 victory. Romo earned his first World Series ring as the Giants won the series in five games to win their first title since 1954.