Event: Sheffield Mini Rapidplay Minor

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Opponent Rating Result
Tyrone Supatan 0 0 - 1
Marek Krajci 0 ½ - ½
Elliott Harris 0 0 - 1
Rosie Irwin 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-200 = (0 + 400 * (0 - 2)) / 4)

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