The Cardinals also outrighted Springfield (AA) right-handed pitcher David Kopp off the 40-man roster and optioned right-handed pitcher Maikel Cleto from St. Louis to Memphis. The Cardinals activated right-handed pitcher Bryan Augenstein from the 60-day disabled list and optioned him to Memphis. These moves give the Cardinals a full 40-man roster.
Valdes, 33, was signed by the Cardinals last November after going 3-3 with a 4.91 ERA in 38 games in 2010 for the New York Mets for whom he fanned 56 batters in 58.2 innings pitched.
The 5-foot-11, 190-pound native of Cuba was 5-2 with a 5.05 ERA in 21 games (7 starts) for the Memphis Redbirds this season. Since moving out of the Memphis starting rotation, Valdes has excelled in a relief role, going 3-0 with a 0.55 ERA in his 14 relief appearances. He has struck out 16 batters in 16.1 IP in relief, allowing just one walk and a .109 opponent's batting average. In the month of June, Valdes is 2-0 with a 1.08 ERA in seven appearances.
Valdes has been assigned uniform #37.