Event: Division Two

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Opponent Rating Result
Philip Hurtado 174 0 - 1
Alan Giles 154 0 - 1
Nigel K Hosken 188 ½ - ½
Richard C Reynolds 152 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-33 = (668 + 400 * (0 - 2)) / 4)

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