Ian Williams' first-ever NFL start ended quickly when the 49ers' nose tackle suffered a broken left ankle on the 49ers' second defensive series, according to a report by Pro Football Talk. Seattle center Max Unger appeared to be engaged with Williams when guard J. R. Sweezy rolled onto Williams' lower leg during a two-yard run by Marshawn Lynch. Williams had to be helped to his feet and was limping badly as he was helped into the locker room for X-rays.
During the offseason, Williams beat out free-agent acquisition Glenn Dorsey for the starting role at nose tackle. However, those players rotated at the position during the preseason and the plan today was to give Dorsey a fair number of repetitions at nose tackle. Both played last week against the Packers, though their snaps came mainly at defensive end.
During the offseason, the 49ers had a third nose tackle, Lamar Divens, on the roster. Divens, however, was waived/injured to reduce the roster to 53 players before the season began,
Williams went undrafted out of Notre Dame in 2011. He appeared in four games over the last two seasons; today was his first start.
-- Matt Barrows