"After six days of not playing and not talking to the media, second baseman Brian Roberts met with reporters in manager Buck Showalter's office following Sunday's season finale and said he has been dealing with concussionlike symptoms that occurred after he hit himself in the helmet with a bat.

"I don't know 100 percent sure, but it was Monday night. In frustration [after a strikeout], I whacked myself on the head with my bat in the ninth. I had my helmet on," Roberts said. "It's something I've done a million times, but I still can't tell you for sure if that was it. But that's the only thing that I can point to because that night and the next morning, I just didn't feel good. So it's been going on since then."

The club's longest-tenured player seemed embarrassed by the revelation — and by missing more time in a season filled with maladies.

"I've never had concussionlike symptoms in my life; it's not fun. It's not something you want to go through every day, that's for sure," he said. "It's a lesson to myself, a lesson to the kids to not do that, no matter how frustrated you are."

Roberts expects to have a CT scan Monday to determine whether something else is causing the lightheadedness and pain.

"I just have some lack of balance and some headaches, and just stuff that hasn't been a whole lot of fun," Roberts said. "So, unfortunately, I haven't been able to obviously get out there and play, but we're still working on trying to get all the results and figure out what's going on."

Roberts ended his season with a .278 average, four homers and 12 stolen bases while totaling just 230 at-bats in 59 games. His year was marred by various injuries and ailments, including a herniated disk in his back that forced him to miss most of the first half."