Kennedy has a sore left oblique that won't require a disabled list stint, so the team will option infield Brooks Conrad to Triple-A El Paso. Conrad hit .100 in 30 at-bats with the Padres in 13 games.
The team will, however, place outfielder Carlos Quentin on the 15-day disabled list with a sore left knee, said manager Bud Black. Quentin, who is hitting .177 this season, last played Saturday. He missed the first 39 games of the season with a bone bruise in his left knee.
To fill Quentin's spot, the team will reinstate second baseman Jedd Gyorko from the DL. He hit .294 in six games with El Paso on his Minor League rehabilitation stint and flew Sunday to Atlanta.
Gyorko missed 44 games with plantar fasciitis in his left foot. Prior to his DL stint, he hit .162 in 56 games with five home runs and 24 RBIs.
Earlier this month, the Padres traded closer Huston Street and, last week, third baseman Chase Headley, leaving the clubhouse without two familiar faces.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.