GOODYEAR, Ariz. -- Although catcher Devin Mesoraco is idle with a mild concussion, several other Reds are making progress toward returning from injuries.
• Starting pitcher Homer Bailey, who is rehabilitating from September flexor mass tendon surgery near his right elbow, is scheduled to throw his fifth bullpen session of spring Wednesday. If all goes well, Bailey would then face hitters for the first time in live batting practice three days later.
"Right now, we're set up to have two live batting practice sessions before we contemplate game action," Reds manager Bryan Price said.
• Center fielder Billy Hamilton remains out with a sore right shoulder, which stemmed from a wall collision vs. the Cubs on Friday. Hamilton felt better the following day, but was hurting more Sunday, before the Reds scratched him from the lineup.
"So it's just a matter of making sure it's right," Price said. "It could affect his swing, his defense, his throwing. There's really no reason at all to run him out there until he feels much better. And that could be a couple of days."
• Third baseman Todd Frazier, who was scratched from the lineup Sunday because of back spasms, is slated to start Tuesday's game against the Brewers.
• After he missed Sunday because of a sore right groin, second baseman Brandon Phillips was back in the lineup vs. the Rockies. Phillips went 0-for-3 with two line outs and a strikeout.
• Starting pitcher and top prospectRobert Stephenson, who was delayed throwing from a mound at the start of camp as a precaution for a sore shoulder, faced hitters for the first time Monday in live BP. Stephenson threw 30 pitches to the hitters, and about 25 more in the bullpen.
"It felt good," said Stephenson, who will get one more live BP session before he can pitch in an exhibition game.
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.