Event: 2023/24 Rapidplay

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Opponent Rating Result
Martin G Walker 2133 0 - 1
Martin Griffin 1324 0 - 1
Heather Enid Walker 1077 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1378 = (4534 + 400 * (1 - 2)) / 3)

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