ANAHEIM, Calif. -- Starting pitchers are quickly becoming a sore spot rather than a strength for the Los Angeles Dodgers.Before they lost to the Los Angeles Angels 6-2 in their final exhibition game Saturday night at Angel Stadium, the Dodgers placed ace pitcher Clayton Kershaw on the 15-day disabled list with a swollen muscle in his back, forcing the coaching staff to push back his second start of the season for a second time this week.Dan Haren has one of the arms that will be counted on to help keep the pitching staff humming along -- both in the coming week and once Kershaw returns.