The Rays recalled Alexander from Triple-A Durham on Sunday.
The left-hander was optioned to Durham on Thursday but will quickly return to the big leagues with Jeffrey Springs (elbow) headed to the injured list. Alexander has a 5.66 ERA and 1.35 WHIP in 19 appearances (seven starts) for the Rays this season, and he could work as a starter or bulk reliever down the stretch in place of Springs.