CINCINNATI -- After a weekend of being called the Reds' "maybe" and "theoretical" starter for Tuesday's game vs. the Cubs, the Reds announced Edinson Volquez will get the ball in the series' middle game vs. the Cubs.

Manager Dusty Baker had been coy about making a firm commitment concerning the right-hander the past couple of days, but on Monday, Baker finally dropped all pretenses. Volquez, Cincinnati's Opening Day starter, was 3-2 with a 6.35 ERA in 10 starts before being sent down to Triple-A Louisville on May 23 to work out of his early-season funk.

In a pair of starts with Louisville, Volquez was 1-0 with a 1.88 ERA.

"I'm hearing he's throwing the ball very well," Baker said. "He made some adjustments, and that's why he went down, to try to get himself back together."

For whatever reason, Volquez's biggest issue seemed to be slow starts. He has an ERA of 18 in the first inning this season and an ERA of 3.51 in all other frames.

When he stopped by the clubhouse Sunday morning, Volquez said he had also made a mechanical adjustment to improve his fastball command. Earlier this season, when Volquez pivoted his right leg toward third base at the beginning of his delivery, he would step about four feet toward first base with his left leg. As a result, he was frequently off-balance.

Strep throat keeps Rolen out of lineup again

CINCINNATI -- Third baseman Scott Rolen was out of the Reds' lineup Monday for the second time in as many days as he recovers from strep throat.

Rolen said he started feeling sick during Thursday's off-day. Despite feeling under the weather, he played on Friday and Saturday, the latter a 12-inning affair.

"On Friday, I was struggling, and on Saturday, I was miserable trying to play that game," he said. "I think [manager Dusty Baker] was going to give me [Sunday] off anyway. I assumed I was probably going to be in the lineup today, but he backed me off another day to put a little distance there."

Rolen usually sits out afternoon contests when they follow night games, and Baker said he would just have to wait and see when Rolen started feeling better.

"When you're sick, who knows?" Baker said. "And then you've got strep throat, and that's even worse."

Thompson earns second promotion to Majors

CINCINNATI -- The Reds recalled reliever Daryl Thompson from Triple-A Louisville on Monday and optioned pitcher Chad Reineke.

Thompson had also previously been called up for an appearance against Philadelphia on May 26 -- the day after the Reds and Phillies played 19 innings. Thompson pitched three innings, allowing five earned runs on six hits.

Thompson, who has started 10 games at Louisville and Double-A Carolina this season, said he let his emotions get to him the last time he got called up.

"I guess I'm too pumped out coming out of the bullpen," Thompson said. "I just tried to come out and throw fastballs. It's a different role from a starter, but at the same time, you've got to be able to calm yourself down and stay in control. I felt like I was out of control last time. I feel more confident about the way I'm going to go about it this time."

Thompson said he had so much adrenaline pumping that his mechanics were thrown off. He sped up his delivery against the Phillies, and his arm couldn't catch up to his body.

"Once my mechanics are off, everything else is pretty much thrown out the door," said Thompson, who found he was getting called up a second time from Louisville manager Rick Sweet during the team's game in Columbus, Ohio, on Sunday afternoon.