DENVER — The Washington Nationals put outfielder Elijah Dukes on the 15-day disabled list with a right calf strain today and recalled right-handed pitcher Garrett Mock from Triple-A Columbus.

The move with Dukes was retroactive to Sunday.

Dukes was previously on the DL twice this season with injuries to his right hamstring and knee. He is batting .264 with six homers and 23 RBIs in 54 games.

Mock was 6-3 with a 3.01 ERA in 19 games for Columbus. In five appearances this season for Washington, he allowed eight earned runs in 13 2-3 innings.

Mock was with the Nationals for Thursday's doubleheader against the Colorado Rockies.