UFC officials have added Chris Leben-Karlos Vemola to the year-end UFC 155 card. The event is expected to take place December 29 from Las Vegas.
Leben (22-8) has won 12 of his 19 UFC fights, but was suspended for a year last November after a positive test for banned substances. Leben was suspended after a loss to Mark Munoz.
Vemola (9-3) has gone 2-3 with the UFC, including a recent loss at the hands of Francis Carmont.
UFC 155 is expected to feature UFC heavyweight champion Junior dos Santos defending his title against Cain Velasquez.