Event: Altrincham

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Opponent Rating Result
Harry Rafferty 1203 1 - 0
Anirudh Nedungadi 0 0 - 1
Matthew Poon 1261 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

688 = (2464 + 400 * (1 - 2)) / 3)

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