Event: Tonbridge

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Opponent Rating Result
David Cazac 1115 1 - 0
Edgar Pack 1641 0 - 1
Ashton Gadiot 1523 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1293 = (4279 + 400 * (1 - 2)) / 3)

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