Rays, and his first home run overall since August 27, 2007, spanning 471 at-bats. Despite the injuries to Longoria, Crawford, and Percival, the Rays had the best single month in franchise history, going 21–7 for the month of August. With an 84–51 overall record, the Rays went into September with the best record in baseball, with a -game lead in the division, and eyeing their first playoff appearance in franchise history. As Jason Bartlett stated, the Rays were "pumped" for the final month of the season, "no one wants to play us, especially at home," and the team was determined to prove that they were a legitimate post-season contender. September Troy Percival was activated from the disabled list on September 2. In Toronto for his second outing since his return, he allowed a walk-off grand slam with two outs when the Rays were ahead by a single run and in position to win the game in extra innings. Against Boston during another extra inning game, Percival came in to close with a three-run lead and allowed the first three batters to reach base. He was removed from the game in favor of Jason Hammel, who had never recorded a save at the MLB level, and was the only remaining reliever available for the Rays in the game due to its length. Hammel converted the save opportunity, but many questioned if Percival should remain as the team's closer. The reason for Percival's removal from the game against Boston was a stiff back, and not for the game's situation, or for any sort of leg injury that had plagued him throughout the year. Percival stated that because of warming up multiple times throughout the game, only to not come in until the Rays took a lead, was what pained his back. Percival acknowledged that he knew he didn't feel well, and that he should have called for his own removal, but decided that with the lead the Rays had, he was able to get the job done. As a result of the game, the Rays decided to not use Percival too often on consecutive nights, and using him in a tie game if the situation of the game changes while he is warming up. He still was listed as the team's closer. Instant Replay made its debut in Major League Baseball at Tropicana Field on September 3 after Alex Rodriguez of the