Event: League Division 1

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Opponent Rating Result
Charlie P Metcalfe 1974 0 - 1
Mark W White 1996 0 - 1
John Hall 1959 ½ - ½
Peter JE Ackley 2030 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1690 = (7959 + 400 * (0 - 3)) / 4)

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