"There are always tough decisions in life, and all of them don't go your way," Reds manager Dusty Baker said. "We only had a couple of guys with options that could be sent down. Anybody else would have to go through waivers and we could end up losing them. [Ondrusek] pitched two innings [Monday] night, so he really couldn't help us for a couple of days."
Ondrusek, who is 3-2 with a 3.50 ERA in 53 games this season, allowed two runs and three hits over two innings in Monday's 12-5 loss to the Phillies. In August, he's given up five earned runs over 6 2/3 innings (6.75 ERA).
"He's struggled a little bit lately himself," Baker said. "This is a time for him to get his game together and come back to help us even more. It wasn't an easy decision and it wasn't easy telling him."
Rules say that Ondrusek must stay in the Minors for at least 10 days, barring an injury. That means he loses 10 days of Major League pay as a result. Cincinnati will likely call up another reliever to take the roster spot when Mesoraco is allowed to return to the roster. That could mean a callup for J.J. Hoover (4-0, 1.25 ERA at Louisville).