Did Manny Pacquiao beat Floyd Mayweather? Conspiracy theory emerges after scorecard suggests judges marked winner in wrong corner

USA: The scorecard from Saturday night's showdown between Floyd Mayweather and Manny Pacquiao has led to suggestions the Filipino may have in fact won the bout.

Mayweather stretched his unbeaten record to 48-0 at the MGM Grand, once again strengthening his position as the greatest fighter of his generation.

The judges scored it 118-110 and 116-112, 116-112, with Glenn Feldman, Burt Clements and Dave Moretti, named 'white, 'blue' and 'pink', all awarding Floyd the victory.

However, an administrative error on the scorecard has led to conspiracy theories that Pacquiao should have been victorious.

The official card from the Nevada State Athletic Commission shows the fighter in the red corner ahead, on all three judges' scores - but Mayweather was actually in the blue corner in Las Vegas.

While there have been claims on social media that something sinister has occurred with fans taking to Twitter to claim the result was incorrect and a rematch should be arranged.

However, the bottom right of the scorecard clearly reads 'Mayweather won by unanimous decision' - proving the general consensus after the fight.

The name above each corner on the card also reads Mayweather in red, suggesting the conspiracies may well be wide of the mark.

After the bout, Pacquiao claimed he defeated the American - despite the unanimous verdict decision.

He said: "I thought I won the fight. He didn't do anything.

"He was moving around on the outside, so it's not easy to throw a lot of punches.

"I could handle his power. I have fought bigger than him and not had a problem.

The Filipino then went on to blame the defeat on a shoulder injury he sustained in sparring three weeks ago.

“Three weeks before the fight, I had to skip training a couple of day because of the injury – I had an MRI scan and there was a tear In my right shoulder," he added.

He was refused a pain-killing injection by the Nevada State Commission, which they were made aware of less than two hours before the start of the bout.

It has since been revealed that the injury, and subsequent necessary surgery, could scupper Pacquiao's chances of a rematch.