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DALLAS -- Seahawks receiver Darrell Jackson had a seizure in the training room Sunday after he sustained a concussion in the fourth quarter against the Cowboys.
Coach Mike Holmgren said Jackson, a former Tampa Catholic and Florida standout, was in stable condition at Baylor Medical Center, where he was expected to stay at least overnight.
Jackson never returned after taking a hard, high hit from safety Darren Woodson with 5:20 left. Woodson was penalized for unnecessary roughness.
Jackson stayed on the sideline and walked off with teammates after the game. He was in the training room, being observed by team physician Ed Khalfayan and talking to receiver Bobby Engram, when the seizure occurred.
Khalfayan said the seizure likely was caused by a lack of oxygen to the brain, and added that Jackson never lost consciousness.
"He kept breathing the whole time and recovered from the seizure and was a bit confused afterwards," Khalfayan said. "He was not receptive to any information and had movements in his extremities."
Also, Seattle lost quarterback Trent Dilfer for the season when he tore his right Achilles' tendon in the second quarter.
Holmgren said Dilfer is scheduled for surgery today in Seattle.
"I feel so bad for him. It's been an unlucky year for him," Holmgren said.
Dilfer, the former Bucs starter, took an awkward step as he dropped back. He still rolled right to avoid defenders and completed the pass to Shaun Alexander for 8 yards.
He was replaced by Matt Hasselbeck, who will start the rest of the season.
BENGALS: After a close loss to Tennessee, coach Dick LeBeau predicted a win Sunday in Houston: "We had every opportunity to win, and next week we will win." ... Cornerback Jeff Burris pulled his right hamstring.
BILLS: Fullback Larry Centers failed to catch a pass, ending his consecutive games streak with a reception at 143. Centers had the league's third-longest active streak behind Oakland's Jerry Rice (247) and Tim Brown (146).
BROWNS: The team will wear patches with the initials AL for the rest of the season to memorialize team owner Al Lerner, who died Wednesday at 69. ... Defensive back Anthony Henry, a South Florida grad, cut his chin.
CARDINALS: Backup receiver Bryan Gilmore was lost on an end zone collision late in the first half. His leg was placed in a clear protective boot and he left on a cart.
FALCONS: Cornerback Juran Bolden sprained his right knee.
49ERS: The team didn't have enough healthy players to suit up a full roster of 45. Tight end Eric Johnson and receiver J.J. Stokes didn't dress. Running back Garrison Hearst (hamstring) and linebacker Jeff Ulbrich (hyperextended knee) missed most of the second half.
JETS: Right tackle Kareem McKenzie sprained his right ankle in the third quarter.
PANTHERS: Linebacker Dan Morgan left with a groin injury but returned in the third quarter.
RAIDERS: Defensive tackle Sam Adams, who has chronic knee problems, was a late scratch. He is scheduled for an MRI today.
RAVENS: Quarterback Chris Redman (back) sat out and was replaced by Jeff Blake in a decision made shortly before the game against Pittsburgh. Blake was 29-for-50 for 298 yards, passed for a touchdown and ran for another in his first start since November 2000 with New Orleans.
SAINTS: Defensive tackle Grady Jackson sprained his right knee.
STEELERS: Quarterback Tommy Maddox left with a sprained left ankle midway through the third quarter but returned with 11 minutes left and finished 18-for-24 for 172 yards.
TITANS: Cornerback Dainon Sidney broke his left forearm.