The St. Louis Cardinals placed rookie righthander Mike Mayers on the 10-day disabled list Sunday with right shoulder inflammation, the team announced.
Mayers left Saturday’s game against the Colorado Rockies after facing three batters.
The 26-year-old has appeared in 42 games this season, going 2-1 with a 4.14 ERA and 42 strikeouts in 45 2/3 innings pitched.
Righthander Dominic Leone was activated off the 60-day DL in a corresponding move and lefty Ryan Sherriff was granted his outright release.
Leone has been away from the team since May 5 with upper arm nerve irritation in his throwing arm. He went 1-2 with a 4.15 ERA in 16 appearances before he was hurt.
In a rehab assignment with Triple-A Memphis, Leone pitched 10 innings and posted a 7.20 ERA.
Leone is active for Sunday’s series finale against the Rockies.