The St. Louis Cardinals placed starting third baseman Jedd Gyorko on the 10-day disabled list Sunday with a right hamstring strain.
Gyorko had to pull up as he rounded third in the eighth inning of the Cardinals' 6-4 win over the Tampa Bay Rays on Saturday night and was replaced by a pinch runner.
He told reporters that he hoped to return in "a couple weeks."
Cardinals general manager Michael Girsch agreed with that estimated timetable, describing the injury as a "mild to moderate" strain.
Gyorko leads the Cardinals in RBIs (64) this season and is hitting .272 with 18 home runs.
The Cardinals recalled first baseman Luke Voit from Triple-A Memphis in a corresponding move.
Cardinals manager Mike Matheny said he planned to "mix and match" Greg Garcia and Matt Carpenter at third base in Gyorko's absence. Garcia started at third on Sunday against the Rays while Carpenter started at first base. When Carpenter starts at third base, Voit will start at first base, Matheny said.
St. Louis (65-64) entered Sunday in third place in the National League Central, 4½ games behind the first-place Chicago Cubs. The Cardinals are five games behind the Colorado Rockies for the second wild-card spot in the National League.