Boxberger (adductor surgery), who led the American League in saves with 41 last season, said he threw a mixture of fastballs and curveballs during a 25-pitch bullpen session. He felt good afterward, and said he looked forward to having a mid-May return to the team.
The right-hander will throw another bullpen in a "couple of days." Shortly thereafter, he'll begin throwing live batting practice in advance of going on a rehab assignment.
In Boxberger's absence, Alex Colome has done a nice job serving as the team's closer. Cash said he is looking forward to having both at his disposal out of the bullpen.
Boxberger "will be very much welcome when he's ready to come back," Cash said.
Bill Chastain has covered the Rays for MLB.com since 2005. This story was not subject to the approval of Major League Baseball or its clubs.