Twin Galaxies has removed all scores of former Donkey Kong champion Billy Mitchell after some of his scores weren't the result of playing on original arcade hardware A quote from the article:

After many months of researching, Twin Galaxies administration has determined the dispute made by Jeremy Young (@xelnia) to be accepted. Alongside this, all of Billy Mitchell's scores have been removed from Twin Galaxies leaderboards.

When a dispute for one of the most prolific players out there hits, it’s hard not to take notice. Sure these sort of things come up as players try to prove their run on any particular game as legitimate, but when a longstanding score on Donkey Kong of 1,062,800 points from Billy Mitchell was put into question, it took an extensive research period from those at Twin Galaxies. After many months of debate, testing, and dredging up technology from that was reported to be used during that time, a decision has finally been made.

 Billy Mitchell's Donkey Kong and All Other Records Removed