After losing two of three to the Colorado Rockies, the Los Angeles Dodgers face another offensive challenge Friday when the Boston Red Sox hit Dodger Stadium for a three-game series. The Red Sox, who beat Seattle in 11 innings on Thursday to earn a split of the four-game series, lead the majors in several offensive categories, including runs (584), hits (1,077), batting average (.285), RBIs (558), on-base percentage (.351) and slugging percentage (.469). David Ortiz, the Red Sox's 40-year-old slugger who is retiring at season's end, is again enjoying a superb season offensively.