Manny Pacquiao Mayweather
Manny Pacquiao reacts after his loss to Floyd MayweatherReuters

The Floyd Mayweather vs Manny Pacquiao post-fight rumblings show no signs of finishing, with two spectators actually suing the Filipino for "defrauding" them.

Following the "Fight of the Century" it became clear Pacquiao had carried a shoulder injury into the fight, an injury which was aggravated during the fourth round, which inevitably hampered his chances of beating the unbeaten Mayweather.

Staphane Vanel and Kami Rahbaran, according to the Daily Star, have decided to sue Pacquiao for keeping the injury from the public, as they feel they deserve a 100 percent fight from both the stars having paid ridiculous amounts of money to watch it live.

Fans were left a little underwhelmed after the fight, with Mayweather winning the bout by unanimous decision. Pacquiao, in an interview right after the fight, said he thought he had beaten Mayweather, but later admitted he was struggling with a shoulder injury.

The Filipino and his management did not disclose the injury when asked about it in a questionnaire, which has led to suggestions he could face disciplinary action from the Nevada Athletic Commission, while perjury charges could also be handed if the authorities decide the pursue the issue.

"Disclosure and honest is a big thing for us," the Nevada Athletic Commission chairman Francisco Aguilar told the Daily News.

"The commission at some point will have to discuss [Pacquiao's answer of no in medical questionnaire]. I've got to run through the process with the [Nevada] Attorney General. But they do sign that document under the penalty of perjury.

"We will gather all the facts and follow the circumstances. At some point we will have some discussion. As a licensee of the commission you want to make sure fighters are giving you up-to-date information.

"The medications he was taking were disclosed on his medical questionnaire, but not the actual injury.

"This isn't our first fight. This is our business. There is a process, and when you try to screw with the process, it's not going to work for you."

Pacquiao's promoter Bob Arum said the injury was an old one, suffered weeks before the fight, but the boxer was denied a late painkilling injection just before the start of the fight against Mayweather last Saturday.