The Reds placed left-hander Sean Marshall on the disabled list with shoulder tendinitis. Marshall has only pitched once this season. He was replaced on the roster by right-hander Logan Ondrusek.

Ondrusek is supposed to arrive at Busch Stadium in time for today’s game.

Marshall has been limited by shoulder fatigue since the last week of spring training. He pitched a perfect inning Sunday.

“I felt great yesterday,” Marshall said. “I pitched Sunday. I didn’t feel great Monday. I like to bounce back well. We thought it was the best thing (to go on the DL). The bullpen has been working hard. To have somebody fresh who is able to pitch in consecutive days. . . I was close to being able to do that. I understand we have an off day tomorrow.

“But it was in the best interest of myself and the rest of the guys to take this little DL stint and strength my shoulder and get it back to 100 percent, so I can pitch the rest of the year without problems.”

This is Marshall’s second time on the DL and the first time with an arm or shoulder issue (he had a strained oblique in 2006).

“I’m a little disappointed that I couldn’t be ready to pitch everyday,” he said. “It’s taken a little bit of toll on our guys down there. They’ve pitched outstanding.”

Marshall will be eligible in 13 days.

“I’ll knock out the strengthening portion, so I don’t have any setbacks,” Marshall said.