Kerry Wood's chances to open the season on the Cubs' active roster likely ended Sunday when the injury-plagued right-handed pitcher suffered another setback. It was unclear whether Wood aggravated the triceps strain that sidelined him for close to two weeks this month, but a team source confirmed that Wood was hurt again after he pitched one inning of relief Sunday and that he's scheduled to be examined by the team doctor on Monday morning. A decision to put him on the disabled list to open the season could be announced as early as Monday, pending the results of the exam.