May 23: Rivas cleared waivers and has been a signed outright to Triple-A Memphis, the Cardinals announced. Hell remain with the organization. May 20: The Cardinals announced Monday that theyve designated first baseman/outfielder for a signment. His spot on the 40-man roster will go to right-hander , whose to the MLB roster has now been confirmed by the club. Righty was optioned to Triple-A...