Event: Worcester & District League

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Opponent Rating Result
T Giles Stanton 1585 0 - 1
Andy Tipper 1379 ½ - ½
Mark Crane 862 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1275 = (3826 + 400 * (1 - 1)) / 3)

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