This story is still developing, but Ken Rosenthal is reporting that the Cincinnati Reds have traded Tanner Roark to the Oakland Athletics, pending passing the medical review.
#Athletics acquiring RHP Tanner Roark from #Reds, source tells The Athletic. Agreement in place, pending medical review.
— Ken Rosenthal (@Ken_Rosenthal) July 31, 2019
Jeff Passan also just dropped that the return will be a minor leaguer, but that player has not yet been announced.
The Reds will receive one minor leaguer from the Oakland A's in exchange for Tanner Roark, per source.