Hanley Ramirez was left off the Dodgers' starting lineup again Sunday amid growing concern about the shortstop's sore left hamstring. Ramirez underwent an MRI exam Sunday and "we'll find out if it's going to be more serious than we've been talking about," Manager Don Mattingly said. "He's having continued problems enough that they want to get another look at this thing," Mattingly said. "We'll find out if this ends up being more long-term." Ramirez, who has appeared in only nine games this season because of injuries, hit a pinch-hit single that drove in the Dodgers' run in their 2-1 loss to the Atlanta Braves on Saturday night. Ramirez, 29, immediately was pulled for a pinch-runner, pitcher Clayton Kershaw. Ramirez "can hit but he couldn't run," Mattingly said. The loss of Ramirez is a major void in the middle of the Dodgers' batting order. In his nine appearances, Ramirez was batting .350 with one home run and three runs batted in. Meanwhile, Andre Ethier, who has been playing center field in place of the injured Matt Kemp, was given a day off by Mattingly after Ethier fouled off a pitch that hit the arch of his right foot Saturday night. Ethier was "a little sore" and tried to swing before the game "and wasn't able to do it," Mattingly said. "So I don't know where we'll be tomorrow with that." Ethier is batting .229. He is hitless in six at-bats against Mike Minor, the Braves left-hander who won Sunday's game.