Dallas Cowboys offensive tackle Tyron Smith isn't expected to play on Sunday against the Seattle Seahawks due to a neck injury.

According to Michael Gehlken of The Dallas Morning News, Smith's medical situation is a “concern” and the Cowboys believe they'll have to manage his injury carefully over a prolonged period.

“Smith's medical situation is a concern, something the Cowboys believe they'll have to manage carefully over a prolonged period,” Gehlken reported on Saturday. “Trotting him out now, after he hasn't practiced since suffered the injury during individual drills on Sept. 17, may not compute.”

Smith, who's playing in his 10th season with the Cowboys, missed last week's game against the Atlanta Falcons with the same neck injury. The 29-year-old tackle has been out of practice the entire week; however, he's made progress and is getting better, according to Cowboys head coach Mike McCarthy.

“Tyron's making progress,” coach Mike McCarthy said on Friday. “He's getting better.”

Nevertheless, with that said, Smith is still expected to miss Sunday's game against the Seahawks. Not only will his absence be missed on the offense, but so will his veteran leadership. Over the course of his career, Smith has shown that his veteran leadership has been vital for the Cowboys organization.

For what it's worth, the Cowboys should be managing his neck injury carefully. Neck injuries have often been seen as a serious matter for players in the NFL. With Smith's absence, Cowboys undrafted rookie Terence Steele is expected to get the start once again.