As of Sunday, Reds manager Dusty Baker confirmed that Masset was continuing to throw bullpen sessions, and his rehab may begin soon.
"He's throwing, it's just a matter of when we want to, with him and his body, start the 30-day rehab ticker," Baker said. "We'll see."
Masset could see action in Arizona Rookie League games before going on a Minor League rehab assignment, but Baker said he is in no rush to tinker with the current bullpen, which led the Majors with 19 wins and a 2.51 ERA entering Sunday.
"We're kind of holding down the ship here," Baker said.