Welterweight Sean Strickland has been forced to withdraw from UFC 202, and the promotion is currently seeking a replacement opponent for Tim Means.

MMAjunkie today confirmed with UFC officials that Strickland suffered a knee injury and pulled out of the contest, leaving a need for a replacement opponent on two weeks’ notice.

Featuring a heavily anticipated rematch between Nate Diaz and UFC featherweight champion Conor McGregor, UFC 202 takes place Aug. 20 at T-Mobile Arena in Las Vegas. The official bout order has yet to be revealed, but the UFC 202 main card airs on pay-per-view following prelims on FS1 and UFC Fight Pass.

Means (25-7-1 MMA, 7-4 UFC) looks to return from an eight-month layoff for the bout after he scored a second-round knockout of John Howard at UFC Fight Night 80 in December. He was supposed to return for a main event bout against Donald Cerrone at UFC Fight Night 83 in February but was removed from the contest less than a month out after receiving a potential USADA anti-doping policy violation.

“The Dirty Bird” protested the violation and had a potential two-year suspension reduced to six months when he proved he unknowingly ingested tainted supplements. Means has won five of his past six bouts with the lone defeat coming to Matt Brown.

Strickland (18-1 MMA, 5-1 UFC), meanwhile, had hoped to add another victory to his near-flawless record. “Tarzan” has been successful in five of his six UFC appearances with his most recent contest being a split-decision win over Tom Breese at UFC 199 in June.

A timetable for his return wasn’t immediately established.

With the change to the card, UFC 202 now includes:

Champ Conor McGregor vs. Nate Diaz – non-title welterweight bout

Anthony Johnson vs. Glover Teixeira

Donald Cerrone vs. Rick Story

Tim Means vs. opponent TBA

Cody Garbrandt vs. Takeya Mizugaki

Raquel Pennington vs. Elizabeth Phillips

Hyun Gyu Lim vs. opponent TBA

Alberto Uda vs. Marvin Vettori

Lorenz Larkin vs. Neil Magny

Chris Avila vs. Artem Lobov

Ning Guangyou vs. Marlon Vera

Colby Covington vs. Max Griffin

Cortney Casey vs. Randa Markos

For more on UFC 202, check out the UFC Rumors section of the site.