"He had a little bit of stiffness after he threw," Reds pitching coach Bryan Price said. "And because of where we are, we're treating this as his own personal Spring Training. He could have pitched yesterday, and we decided to push him back. It's nothing significant. If this was Spring Training, we would have done the same thing. We're trying to get his arm ready and healthy."
The final test Masset must pass is to work in back-to-back games. That could happen by the end of the week, but that is in pencil rather than pen.
"As always, it's day to day with these guys," Price said.
Even if Masset does not return before the Aug. 31 deadline to set postseason rosters, it would not prevent him from pitching in the playoffs.
"Him being on the 60-day disabled list, no matter when he comes back he would still be eligible for the playoffs," Reds manager Dusty Baker said.