Event: Harborough vs Kettering Friendly

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Opponent Rating Result
Matthew Edwards 1393 ½ - ½
Matthew Edwards 1393 1 - 0
Thomas Schloesser 1639 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1742 = (4425 + 400 * (2 - 0)) / 3)

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