The , Wilcox opted to sign with the more established 49ers where he went on to star for 11 seasons. Converted to outside linebacker, Wilcox quickly established himself as one of the league’s finest. Nicknamed "The Intimidator," he was ideally suited for the position, both mentally and physically. Known for his ability to disrupt plays, he was particularly tough on tight ends. He did not let anybody easily off the line of scrimmage whether to block or get into a pass route. Always prepared, Wilcox was a true student of the game and worked to be fundamentally correct.