The Cardinals recalled Kiekhefer from Triple-A Memphis on Monday.
Kiekhefer will take the roster spot of Mike Leake (shingles), who was placed on the disabled list. Kiekhefer appeared in 15 games with the Cardinals earlier this season and posted a 4.50 ERA, 1.14 WHIP, and 11:2 K:BB over 14 innings. He will work situationally and in middle relief.