The Rays selected Rodriguez from Triple-A Durham on Friday, Tricia Whitaker of Bally Sports Sun reports.
Rodriguez holds a 3.40 ERA and 1.11 WHIP through 45 innings across 10 starts in Triple-A this season. He recently returned from right elbow tightness, and now he'll head to the majors, although it's not clear what his role might be for Tampa Bay. Rodriguez has a bit of major-league experience already -- he pitched 29.2 innings for Detroit last season and put up a 10.62 ERA and 1.92 WHIP alongside a 25:15 K:BB. Ryan Thompson was optioned to Durham to clear a spot on the active roster, and Jose Lopez was DFA'd to clear a 40-man spot.