Because of the outing against the Dodgers, Williams felt Treinen deserved to start against the Pirates on Thursday.
"It's hard to deny him that opportunity after how he pitched against the Dodgers. It's really hard," Williams said. "He was on a limited pitch count. He pitched really well against them. He has been building from there. He has been normal [rest], so he'll be prepared."
Treinen is 2-0 with a 1.96 ERA in six starts for Triple-A Syracuse.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.