Event: Division 1

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Opponent Rating Result
Marek Mazek 2063 0 - 1
Phil Ramsey 1807 ½ - ½
Alfie Melia 1992 0 - 1
John P Williams 1995 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1664 = (7857 + 400 * (0 - 3)) / 4)

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