"There's nothing new to report," assistant general manager Gord Ash said before Saturday's game. "He's not on the same timetable [as Riske]."
The session lasted about 15 minutes and the righty threw about two dozen pitches.
The injured closer has been on the disabled list since May 21 with rotator cuff tendinitis in his right shoulder. His return date is still uncertain, but the bullpen session is a step in the right direction.
Dave Fultz is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.