CINCINNATI -- Reds lefty reliever Sean Marshall is continuing to make progress toward a return from the disabled list, but plans for a rehab assignment have yet to be made.
Marshall, who has been on the DL for the second time since May 24 with a sprained left shoulder, threw a 39-pitch bullpen session Friday.
"It went great," Marshall said. "We'll see. We're just playing it day by day. I know they're planning a light toss tomorrow and a 'pen the next day. I will mix in some breaking balls and see how it goes."
Marshall threw primarily fastballs -- with some cut-fastballs and two-seamers part of the mix. He said he threw some sliders and curveballs only in the warm-up.
On Wednesday, Marshall did some throwing drills in center field, fielding balls and throwing them to a coach on the right-field line. The point of the drill was to incorporate his legs more into his throwing motion.
"A little less stress on my shoulder and a little more on my legs," Marshall said.
Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.