The Yankees went into the postseason again but lost to the Texas Rangers in the 2010 ALCS. 2011 Following the 2010 season, Posada underwent arthroscopic surgery in his left knee to repair a torn meniscus. Posada was shifted to designated hitter for the 2011 season due to his declining defensive performance, while Russell Martin became the new everyday catcher. After starting the 2011 season in a slump, Posada was moved to ninth in the batting order for a May 14 game against the Boston Red Sox. Posada asked to be removed from the lineup. Posada told reporters that he needed time to "clear [his] head" and also mentioned some "stiffness" in his back as the reasons for his request. Posada hit .382 in June, but was removed from the everyday lineup in August due to his .230 season batting average. On August 13, 2011, his first start since being benched, in a game against the Tampa Bay Rays, Posada went 3-for-5 with a grand slam and six RBIs. His grand slam was the tenth of his career, moving him past Yogi Berra and Mickey Mantle for sixth place on the Yankees' all-time list. On August 25, 2011, he played second base for the first time in his major league career during the ninth inning of the Yankees' 22–9 victory over the Oakland Athletics; Posada recorded the final out by fielding a grounder. On September 10, 2011, Posada played as a catcher for the first time of the season due to injuries of Russell Martin and Francisco Cervelli. Posada finished the regular season with a .235 batting average, 14 home runs, and 44 RBIs. In the 2011 ALDS, Posada recorded six hits, including a triple, four runs, and four walks in 14 at-bats as the starting DH, for a .429 batting average and a .579 on-base percentage. The Yankees lost the series to the Detroit Tigers in five games. Retirement When asked by reporters after the 2011 ALDS if he had considered that he might have played for the final time with the Yankees, Posada said, "I don't want to look at it like that. We lost, and we'll see what happens in the off-season." As the interview session went on, he eventually became emotional and left the clubhouse area to compose himself. Girardi said, "This guy, when you look at what he did in this series, he was awesome. He's