CINCINNATI -- Bronson Arroyo will take the mound Friday to lead the Reds into the second half of the season, ending at least some of the uncertainty surround the starting rotation.
While Edinson Volquez is scheduled to pitch Saturday, the rest of the rotation remains up in the air.
"I don't want to say exactly yet, because there's a good chance somebody might have to go -- you don't want guys walking around nervous," manager Dusty Baker said. "We don't know if [Aaron] Harang's going to be ready or not, so we'll just leave it at that for now."
As one of the few pitchers who knows his exact role, Arroyo worked out during the week but found himself without much company at Great American Ball Park.
"That's why I've been the only guy down here, probably, playing catch and throwing bullpens during the All-Star break," Arroyo said. "It's my turn in the rotation anyway, so it just kind of makes sense. ... I don't know where everybody else was, but Tuesday, Wednesday, I was the only guy here, probably."
Arroyo (9-4, 4.04 ERA) has won four of his past five starts, including allowing just one run in eight innings with no walks on July 7 at the Mets. He'll face Colorado's Jason Hammel (7-3, 4.08) in the second-half opener.