Izturis was injured Friday night and came out of the Cardinals' 5-4 victory over Boston in the fourth inning. He is batting .241 with one homer and 12 RBIs in 67 games this season.
The Cardinals also purchased the contract of outfielder Nick Stavinoha from Triple-A Memphis. He was in the starting lineup at designated hitter for the finale of the Cardinals' three-game series against the Red Sox.
Stavinoha was in line to become the ninth St. Louis player to make his major league debut this season. He was batting .346 with 10 homers and 50 RBIs in 71 games at Memphis.
To make room on the 40-man roster for Stavinoha, the Cardinals transferred injured right-hander Chris Carpenter from the 15-day disabled list to the 60-day DL.
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