Jacoby Replaces Credeur, Meets Tavares at UFC 137

Jacoby announced the news via Twitter on Friday. The reason for Credeur's withdrawal is currently unknown. UFC 137 goes down Oct. 29 from the Mandalay Bay Events Center in Las Vegas. Headlined by a welterweight title conflict between Georges St. Pierre and Carlos Condit, the evening’s main draw will air live on pay-per-view.

St. Pierre was originally supposed to face Nick Diaz in the main event, but Diaz was pulled from the matchup after he missed consecutive press conferences. The Californian remains on the card, however, and will now take on Condit’s original opponent, B.J. Penn, in the co-main event.

Undefeated through six outings, Jacoby has only seen the second round once in his nascent pro career. Fighting out of Finney's Hit Squad under the supervision of Marc Fiore, Jacoby has already earned five wins this year. The middleweight holds five of his six career victories by knockout, most recently finishing Billy Horne in just 37 seconds on Sept. 4.

Also only 23 years old, Tavares (Pictured) recently suffered his first loss, dropping a unanimous decision to Aaron Simpson at UFC 132 on July 2. Prior to the defeat, Tavares had posted consecutive wins in the Octagon following his stint on “The Ultimate Fighter 11,” besting Seth Baczynski and Phil Baroni. The native Hawaiian has finished six of his seven opponents, earning four of those wins by knockout.