We all remember the most lucrative fight in boxing history between Floyd Mayweather and Manny Pacquiao but for the wrong reasons.
It was a snooze fest which left fans underwhelmed as Mayweather extended his unbeaten record to 48-0.
In the aftermath of the contest, Pacquiao apologised to fans and stated a shoulder injury had hampered his chances in the ring.
It could make sense, especially when you consider the lack of punches thrown by the Filipino icon.
However, in an explosive interview which has resurfaced from 2017, Dr. Pietro Baio - sports chiropractor and dietitian - revealed how it just wasn't the case.
Speaking to the Culinary Fighter, the doctor said: "So, we go back to the fight between Floyd Mayweather and Manny Pacquiao and Pacquiao saying he had a shoulder injury," said Baio.
"You know, looking at that fight, and being a chiropractor and physiologist, I sort of call bull**** on that.
"Simply because of the fact that it wasn't an issue the whole fight. You didn't see him holding his shoulder. You didn't see them rubbing him in the corner.
"He was able to hold his arm up and to throw his punches. If that shoulder itself is injured or he has a rotator cuff injury, he's not going to be able to do that," added Baio, who is known for working with Canadian welterweight fighter Phil Lo Greco.
"Once again, you can get a video of anybody giving you an injection of anything. He might have just gotten a cortisone shot before or after just to decrease inflammation," he said.
"In the boxing world, you never know what's real and what's fake. I'm going to sit here as a professional. I'm going to say that was fake.
"He lost. Floyd did his thing. I knew how Floyd was going to fight and Pacquiao wasn't prepared for that.
"So, moving forward, he came up with an injury to say why he didn't perform as well as his Filipino fans would have wanted him to."
Any potential of a rematch between Mayweather and Pacquiao is dead with both preparing a return to the ring.
Pacquiao rolled back the years with a stunning performance against Keith Thurman to win the WBA welterweight title in 2019.
"Pacman" will return this year to face unified welterweight titlist Errol Spence Jr.
In contrast, Mayweather will collide against YouTuber Logan Paul in an exhibition fight next month. For more details, click here.