Rodriguez (finger) threw a bullpen session Friday, Chris McCosky of The Detroit News reports.
It was the first mound workout for Rodriguez since he suffered a ruptured A4 pulley in his left index finger in late May. There's no exact timeline yet for his return to Detroit's rotation, but the 30-year-old southpaw has trended in an encouraging direction since he resumed throwing on flat ground June 6. An early-July target for activation seems plausible.