.341 with 10 home runs and 59 RBI in 85 games. His on-base plus slugging percentage was .948. In 2009, he hit .339 at high Single-A Salem before being called up to Double-A Portland, where he batted .364 with four home runs and a 25-to-12 walk-to-strikeout ratio. His OPS was .991. In 2010, Nava spent two months in AAA. At that time he was quoted as saying, "I know I have the talent and the ability, and I can keep playing at the next level," he said. "If I didn't think I could, I would have been like, ‘You know what? There’s no point.’ … I definitely thought I could perform and perform well. That’s why I kept on going. Quitting’s just not much of an option for me." Boston Red Sox 2010 Nava made his Major League debut with the Boston Red Sox on June 12, 2010, at Fenway Park as the starting left fielder against the Philadelphia Phillies. He was called up to help with the team's outfield situation, with Jacoby Ellsbury and Jeremy Hermida on the disabled list (DL) and Josh Reddick optioned to the minor leagues for more playing time. Taking the advice of Red Sox radio broadcaster Joe Castiglione, who before the game told him to swing as hard as he could on the first pitch because "that's the only first pitch in the majors you'll ever see," Nava did swing at the first pitch he saw and hit a grand slam off Phillies pitcher Joe Blanton into the Red Sox bullpen. Nava became only the fourth player to have hit a grand slam in his first at-bat, joining Bill Duggleby in 1898, Jeremy Hermida in 2005, and Kevin Kouzmanoff in 2006. Nava became only the second player, after Kouzmanoff, to do so on the first pitch of his Major League career, and the first player in Major League Baseball history to achieve a grand slam on his first-ever MLB career at-bat while in interleague play. His second at-bat, an inning later, was also with the bases loaded, but he struck out, losing the opportunity to become the only player to hit a grand slam in his first two at bats. He was the tenth player in Red Sox history to hit a home run in his first plate appearance with the club, the prior being Darnell McDonald on April 20, 2010, against the Texas