Shaffer, the club's No. 20 prospect, was hitting .286 (2-for-7) in five games for the Rays. Sturdevant is 0-1 with a 4.08 ERA in 15 games for the Rays this year.
Bill Chastain has covered the Rays for MLB.com since 2005. This story was not subject to the approval of Major League Baseball or its clubs.