Originally, Robbie Lawler was expected to face a former Strikeforce fighter in Tarec Saffiedine at UFC on FOX: Johnson vs. Moraga.
However, Saffiedine was forced out and replaced by Siyar Bahadurzada. Now, Bahadurzada has been forced to remove himself from the fight, and Bobby Voelker is set to replace him.
The fight will likely remain on the main card July 27 from the KeyArena in Seattle.
Lawler (20-9) earned a TKO victory over Josh Koscheck in his return to the UFC earlier this year. Voelker (24-9) was topped by Patrick Cote in his Octagon debut this past March.
Another fight was changed later in the day, as Bobby Green will not be able to face Danny Castillo. In Green’s place will step Tim Means.
Castillo (15-5) has gone 4-2 in his last six fights, while Means (18-4-1) holds a 10-1-1 record in his last 12. That includes a 10-fight unbeaten streak.