An injury to his right arm has ended the college career of Wisconsin Badger nose tackle Olive Sagapolu. He was hurt in the loss at Northwestern and had surgery Wednesday. Freshman Bryson Williams has replaced the senior in the lineup and is expected to start again Saturday at Penn State. Sagapolu finishes the season with 23 tackles, four-and-a-half tackles for loss and two sacks. He played 44 games for the Badgers during his career.