DENVER -- The Los Angeles Dodgers again are feeling the pinch at the shortstop position. On Sunday, a sunscreen-necessary one at that in the Mile High City, the Dodgers placed Erisbel Arruebarrena on the 15-day disabled list with a right hip flexor and recalled infielder Carlos Triunfel from Triple-A Albuquerque before the team's series finale against the Colorado Rockies.After coming in for Hanley Ramirez during Friday's contest here, Arruebarrena apparently injured himself running on an eventual groundball out during his first at-bat in the sixth inning.