SAN FRANCISCO -- Reds third baseman Scott Rolen will likely miss at least three more games due to the presence of post-concussion symptoms.
Following the team's 5-2 win Sunday against the San Francisco Giants, head athletic trainer Mark Mann told reporters Rolen wouldn't engage in any strenuous physical activity until his symptoms (including an inability to focus) subside.
Mann said Rolen would be re-examined Monday -- the team uses ImPACT Concussion Management Software -- and will join the team in St. Louis for its three-game series against the Cardinals.
Rolen was hit in the head by a Jason Marquis pitch Sunday. He returned to action by homering Wednesday and going 1-for-5 and scoring twice in Friday's win over the Giants. Manager Dusty Baker said Rolen didn't feel entirely right after the game.
The third baseman was slated to bat fourth Saturday but was replaced by Adam Rosales after taking part in batting practice.
The Reds acquired Rolen, who is signed through the 2010 season, from the Toronto Blue Jays in a four-player deal minutes before the July 31 non-waiver Trade Deadline.
Rosales went 3-for-4 in Rolen's stead Sunday.
Andrew Pentis is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.