Event: Division 3

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Opponent Rating Result
Martin Hargreaves 1489 0 - 1
Richard Owens 1721 ½ - ½
Gareth Ellis 1812 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1541 = (5022 + 400 * (0 - 1)) / 3)

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