In parts of the last three Major League seasons with St. Louis, Cleto had no record and a 10.34 ERA in 13 relief outings. Although he gave up 18 runs on 25 hits, he also had 26 strikeouts in just 15 2/3 innings.
Cleto, 25, had a 1-2 record and a 3.55 ERA in 19 games for Triple-A Omaha last season.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.