TALLAHASSEE, Fla. (AP) _ Florida State offensive tackle Brett Williams will miss the 21st-ranked Seminoles' game against No. 4 Florida on Saturday with a sprained right knee ligament.

Williams, who has started all nine games this season, was carted off the field after injuring his knee during last Saturday's 34-28 loss to North Carolina State. Alex Barron, a 6-foot-6-inch, 305-pound redshirt freshman, will start in Williams' place.

Barron will most likely be facing Florida's star defensive lineman Alex Brown.

``It will be difficult because you're playing against one of the most talented defensive ends in the country,'' coach Bobby Bowden said. ``It will be a great learning experience for him.''

Barron has seen limited playing time in four games this season. He practiced with the first-team offense Monday.

Results of an MRI on Williams' knee were not yet available. If there is no ligament damage, he might be able to return for a game against Georgia Tech on Dec. 1.