Castro left Monday's game against the White Sox because of a strained right hamstring suffered while running out a ground ball in the second inning.
Analysis: Castro was back in the lineup after sitting out Sunday to rest a sore wrist. Castro had a cortisone shot and said he's been dealing with the issue for several weeks, though it hasn't affected his performance much. The second baseman is hitting .313 with 12 homers and 45 RBIs in 73 games.
Jedd Gyorko went 2 for 3 with a home run and three RBIs Monday as the St. Louis Cardinals topped the Cincinnati Reds 8-2. The homer was his 12th of the season. He ended the game with a .298 batting average.
Analysis: Gyorko is 11 for 35 (.314) with four homers and eight RBIs in his last 10 games.
Michael Wacha improved to 4-3, allowing one run on five hits and one walk in 6.0 innings, as the St. Louis Cardinals defeated the Cincinnati Reds 8-2 on Monday. Wacha struck out five, ending the game with a 4.50 ERA and 1.47 WHIP on the season.
Analysis: Wacha (4-3), who began the day with an 8.17 ERA over his last seven starts, completed at least six innings for just the second time in his last seven outings.
Randal Grichuk went 2 for 5 with a home run and three RBIs Monday as the St. Louis Cardinals topped the Cincinnati Reds 8-2. The homer was his sixth of the season. He ended the game with a .232 batting average.
Analysis: Grichuk hit his second homer in two games since being recalled from Triple-A. He's 4 for 10 in those games after going 5 for 37 in his previous 11 games with the Cardinals.