The Athletics reinstated Kuroda-Grauer (groin) from the 60-day injured list Tuesday.
Kuroda-Grauer had been out since suffering a testicular contusion July 20 against the Diamondbacks. He got surgery to address the testicle that was ruptured and was able to start rehab in the middle of August. As the young prospect returns to action Tuesday, the Athletics placed Max Muncy (knee) on the 10-day injured list and transferred J.T. Ginn (elbow) to the 60-injured list in corresponding moves.