Mankato, Minn. ? Minnesota Vikings safety Tank Williams probably will miss the entire season due to an injury to his left kneecap sustained Saturday during training-camp practice.

Coach Brad Childress said Sunday that no roster move had been made yet regarding Williams, who signed with the Vikings as a free agent earlier this year after four seasons with Tennessee.

“I feel terrible for Tank,” Childress said, adding that he became emotional when he saw Williams in the locker room after he was carted off the field.