CHENEY, Wash. (AP) Seattle Seahawks starting quarterback Trent Dilfer is out indefinitely because of a sprained ligament in his right knee.

Team officials would not say when Dilfer could return. Dilfer and coach Mike Holmgren were both unavailable for comment.

Dilfer injured the medial collateral ligament of his right knee during the second quarter of the Seahawks' 28-10 exhibition loss to the Indianapolis Colts on Saturday night.

Playing in his third series against the Colts, Dilfer was hit by defensive tackle James Cannida and defensive end Chad Bratzke as he attempted a pass to Koren Robinson with 2:02 gone in the second quarter.

Dilfer was helped off the field and carted to the locker room.

Before the injury, Dilfer completed 9 of 11 passes for 94 yards and a touchdown. The Seahawks led 10-0 when Dilfer left and was replaced by Matt Hasselbeck, who was 14-for-22 for 139 yards, with two interceptions.

Indianapolis scored 28 unanswered points with Dilfer out of the game.

Dilfer signed a one-year contract with Seattle before last season to back up Matt Hasselbeck, who had never started a regular season game before coming to Seattle.

Dilfer went 4-0 when Hasselbeck was injured, improving his string of victories to 15 straight starts.

Before coming to Seattle, Dilfer led the Baltimore Ravens to victory in the 2001 Super Bowl and was released a month later.

Dilfer signed an $8 million, 4-year contract in the offseason and Holmgren named him the starter this spring, demoting Hasselbeck.

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