Event: 2021 Summer Rapid Play

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Opponent Rating Result
Mark Lynch 1472 0 - 1
Brian Kirby 1210 1 - 0
Alan Brewis 1375 1 - 0
Simon P Morris 1916 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1693 = (5973 + 400 * (3 - 1)) / 4)

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