BOSTON — Curt Schilling has a "significant" shoulder injury that could require career-ending surgery, according to a report that also said the Red Sox looked into whether they can void the $8 million, 1-year-contract he agreed to three months ago.

The Boston Herald reported on its Web site today that Schilling could have an injury to his rotator cuff or labrum, one serious enough to require surgery that could end Schilling's career. The 41-year-old right-hander has said 2008 will be his last year.

Schilling did not respond to a telephone call or e-mail seeking comment, and his publicist, Katie Leighton, said Schilling would not have any comment today. Red Sox officials did not respond to multiple e-mails and calls seeking comment; spokesman John Blake said the team had no comment.

Schilling, who spent seven weeks on the disabled list with right shoulder tendinitis last year, went 9-8 with a 3.87 ERA during the regular season last year. In the playoffs, he went 3-0 with a 3.00 ERA to help the Red Sox win their second World Series in four seasons.

He agreed in November to a contract that allows him to earn an addition $5 million in performance and weight bonuses.