Third-year Seahawks running back Kenny McIntosh suffered a left knee injury early in Saturday’s practice that the team fears is a torn ACL that could sideline him for the upcoming season.

Third-year Seahawks running back Kenny McIntosh suffered a left knee injury early in Saturday's practice that the team fears is a torn ACL.

The Seahawks fear a season-ending injury to one of their backs who was part of their new emphasis on running the ball this year.

McIntosh (knee) likely tore an ACL during practice Saturday, Adam Schefter of ESPN reports.

McIntosh suffered a leg injury during Seattle's practice Saturday, Gregg Bell of The Tacoma News Tribune reports.