Event: Kalmar Shield

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Opponent	Rating	Result
Kento Pilditch	1400	1 - 0
Malcolm Spencer	1195	1 - 0
James Monks	1175	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1657 = (3770 + 400 * (3 - 0)) / 3)