Rashad Evans and Chael Sonnen have booked their spots on the UFC's 20th anniversary weekend.

On Wednesday, the much-rumored bout between Evans, the former UFC light heavyweight champion, and Sonnen, the perennial two-division contender, which will be held at UFC 167 on Nov. 16 in Las Vegas, was announced. The news was broken on the UFC Fight Night pre-game show on FOX Sports 1.

While not yet called such, the fight is expected to be the co-main event, underneath the welterweight title fight between champion Georges St-Pierre and challenger Johny Hendricks.

The bout will be contested at light heavyweight.

Sonnen (29-13-1) carries the momentum of his first-round light heavyweight submission of Mauricio "Shogun" Rua into the bout. Coming off back-to-back losses to Jon Jones and Anderson Silva, Sonnen had talked about returning to middleweight prior to defeating Rua on Aug. 17, but the Evans fight means he's hanging around at 205 at least a little longer.

Evans (18-3-1), too, is looking to rebuild momentum. After looking listless in a UFC 156 loss to Antonio Rogerio Nogueira, the former champ scored a split-decision win over Dan Henderson at UFC 161.