Dodgers general manager Ned Colletti is trying to acquire a run-producing pinch-hitter before Sept. 1, but the market is thin. Any player who joins the organization by Tuesday would be eligible for post-season play. Mark Loretta and Juan Pierre are the Dodgers’ primary pinch-hitters. Loretta is 11-for-51 (.216) with no homers and six RBIs pinch-hitting, only two of those RBIs since the All-Star break. Pierre has shown to be an effective pinch-hitter despite disliking the role (12-for-33, .364), but has no homers or RBIs and is often used to lead off an inning. Of the Dodgers’ four pinch-homers this year, two were hit by regular starters (Manny Ramirez and Rafael Furcal). The others were by Blake DeWitt (expected to be recalled from Triple-A next week) and the disabled Xavier Paul. Doug Mientkiewicz, who had the role until blowing out his shoulder and having surgery, is expected to be activated when rosters expand Tuesday. — Ken Gurnick