"Third baseman Scott Rolen will be activated and in the starting lineup for the Reds today.

"That's a good sign," Reds manager Dusty Baker said.

Rolen joined the team here after playing two games on a rehab assignment with Triple-A Louisville.

"I had no trouble," Rolen said. "It was good."

Rolen has been on the disabled list since Aug. 11 because of the lingering effects of the concussion he suffered when he was hit flush on the helmet by a 92 mph Jason Marquis fastball on Aug. 2.

Rolen came back and played Aug. 4 and 5, hitting a home run and a double.

But the symptoms persisted.

Rolen was cleared by a neurologist Saturday.

"I had an extensive interview," Rolen said. "I took the Impact test. He said I was fine and cleared me to come off the DL.""