With Joe Riggs out, Uriah Hall needs a new opponent for next month’s UFC Fight Night 73 event.

With Riggs (40-16 MMA, 4-6 UFC) scratched for undisclosed reasons, middleweight Hall (10-5 MMA, 3-3 UFC) awaits a replacement opponent.

UFC officials confirmed the change with MMAjunkie.

UFC Fight Night 73 takes place Aug. 8 at Nashville’s Bridgestone Arena. The card airs on FOX Sports 1 following early prelims on UFC Fight Pass. The bout order hasn’t been finalized, but Riggs vs. Hall was expected to be part of the televised lineup.

Hall looks to rebound from a disappointing split-decision loss to Rafael Natal at in May UFC 187. That setback snapped a three-fight winning streak for “The Ultimate Fighter 17” veteran, who reached the final of that show only to be upset by Kelvin Gastelum. All three of Hall’s UFC losses are by split decision.

Riggs made his UFC return this past December but suffered a neck injury in his fight against Ben Saunders at UFC on FOX 13 and was done 57 seconds into the fight. The longtime vet returned in April at UFC 186 in March but dropped a unanimous decision to Patrick Cote.

The UFC Fight Night 73 lineup now features:

Ovince Saint Preux vs. Glover Teixeira Roman Salazar vs. Marlon Vera Jared Cannonier vs. Jonathan Wilson Timothy Johnson vs. Jared Rosholt Beneil Dariush vs. Michael Johnson Anthony Christodoulou vs. Scott Holtzman Sara McMann vs. Amanda Nunes Chris Camozzi vs. Tom Watson Ian McCall vs. Dustin Ortiz Sam Alvey vs. Derek Brunson Uriah Hall vs. opponent TBA Ray Borg vs. Geane Herrera

For more on UFC Fight Night 73, check out the UFC Rumors section of the site.