Event: Summer Tournament 2023

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Opponent Rating Result
Sam J Murphy 1550 0 - 1
John Kooner 1376 0 - 1
N George 1405 0 - 1
Steve Saunders 1062 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1148 = (5393 + 400 * (1 - 3)) / 4)

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