WWE's next pay-per-view is about three weeks away, and there is only one match announced for Night of Champions, according the official WWE website. WWE World Heavyweight and the United States Champion, Seth Rollins, is set to defend the WWE title against Sting in the main event.

In a report from Cageside Seats, there are already plans for the entire card with every title on the line and here are the rumoured matches that are subject to changes:

Ryback (C) vs. The Big Show for the Intercontinental Championship

Ryback looks set to defend his Intercontinental title against The Big Show. The two, along with The Miz, was involved in the triple threat match at SummerSlam with Ryback pinning him to retain the title. With the Big Show not involved in the decision, it makes sense that two will face off each other.

Nikki Bella (C) vs. TBA for the WWE Divas Championship

The Divas Revolution already started, but the Divas title hasn't been defended. WWE has announced on its official Facebook account that there will be a Beat the Clock Challenge to determine the No. 1 Contender for the title. Nikki Bella will surely defend her title at Night of Champions

The New Day (C) vs. The Prime Time Players vs The Dudley Boyz for the WWE Tag Team Championship

The Dudley Boyz returned to WWE after 10 years of absence and made their presence felt when they attacked The New Day on Raw after SummerSlam. The Prime Time Players have a rematch clause to use, so a triple threat tag team match is expected.

Seth Rollins (C) vs. John Cena for the United States Championship

In a report by Wrestling Observer Radio via SEScoops, Seth Rollins is set for a double duty with John Cena having a rematch for his U.S. title. Cena lost the title at SummerSlam after Jon Stewart interfered. He got his revenge the next night on Raw by giving the former Daily Show host a big Attitude Adjustment finisher.

The Wyatt Family vs. Roman Reigns and Dean Ambrose

No words yet according to Cageside Seats if Reigns and Ambrose will recruit another teammate after the debut of new Wyatt Family member, Braun Strowman. Possible scenarios include a tag team match, three-on-three or a two-on-three handicap match.

Dolph Ziggler and Lana vs. Rusev and Summer Rae

At SummerSlam, a count out finish meant that the feud continues at Night of Champions. With Lana and Summer Rae being involved every week, a mixed tag team match looks set.

The ninth annual Night of Champions is set to take place on Sept. 20 at the Toyota Center in Houston, Texas. The show will feature every WWE title in the promotion being defended.