UFC 166: Velasquez vs. Dos Santos 3 has gained another fight, as bantamweights Francisco Rivera and George Roop square off.
The card takes place October 19 from the Toyota Center in Houston. Rivera-Roop will likely be part of the prelims.
Rivera (9-2) has won two of his three UFC bouts, including a recent win over Edwin Figueroa.
Roop (14-9-1) is coming off a TKO victory over Brian Bowles this past May. That added to an upset win over Hatsu Hioki.