Event: Vince Skillcorn Summer Tournament 2023

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Opponent Rating Result
Keith Harrison 1557 0 - 1
Arthur Stead 1250 1 - 0
Darren John Donnison 1501 0 - 1
Gary Leighton 1534 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1261 = (5842 + 400 * (1 - 3)) / 4)

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