Ronnie O'sullivan can run centuries left handed,
Cut and past directly from wikipedia
Snooker
In cue sports, a player can reach farther across the table if they are able to play with either hand, since the cue must either be placed on the left or the right side of the body. English snooker player Ronnie O'Sullivan[4] is unique amongst the current ranks of top snooker professionals, in that he is able to play to world standard with his left hand. While he lacks power in his left arm, his ability to alternate hands allows him to take shots that would otherwise require awkward cueing. When he first displayed this ability in the 1996 World Championship against the Canadian player Alain Robidoux, Robidoux accused him of disrespect. O'Sullivan responded that he played better with his left hand than Robidoux could with his right.[5] O'Sullivan was summoned to a disciplinary hearing in response to Robidoux's formal complaint, where he had to prove that he could play to a high level with his left hand. He played three frames of snooker left handed against former world championship runner-up Rex Williams, winning all three. The charge of bringing the game into disrepute was subsequently dropped.[