Tom Singer, MLB.com
The Pittsburgh Pirates have reportedly agreed to bring back veteran right-hander Jeff Karstens, whom the club had non-tendered two months ago.
DENVER -- Ray Lewis was sick Saturday night, 90 minutes after the Ravens had stunned the Broncos here, and he was waiting in a stadium anteroom to be connected with Deion Sanders for an NFL Network interview. "Flu?'' someone asked him. He nodded in…