Event: Haslemere Trophy

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Opponent Rating Result
Magnus Brodie-Cooper 940 1 - 0
Freddie Hampshire 0 1 - 0
Freddie Hampshire 0 1 - 0
Magnus Brodie-Cooper 940 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

870 = (1880 + 400 * (4 - 0)) / 4)

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