This could be it for Billy Mitchell, the controversial King of Donkey Kong. He rose to fame in the '80s as the top scorer for a bunch of games like Pac-Man, Ms. Pac-Man, Burger Time, and Centipede, but the record that he's best known for, Donkey Kong, could be taken from him over new evidence.
Jeremy Young, the moderator of Donkey Kong Forum (DKF), has presented a wealth of evidence to show that Mitchell's performance was likely faked, and has thus removed the high score from DKF's leaderboard.
Young has compared Mitchell's submitted footage with both MAME and original arcade hardware and has deduced that "each of the Donkey Kong world record direct-feed recordings presented by Billy Mitchell and verified by TG (TwinGalaxies) were generated in MAME and not by original Donkey Kong hardware."
He has posted his findings on the TwinGalaxies forum, considered the official leaderboard for high scores worldwide, providing prof of the use of MAME by Mitchell during his recorded high scores. He is asking TwinGalaxies to remove the disputed scores as well. Here is the post:
And just to jog your memory, here's peak Mitchell when he was the King of Kong: