Event: The Friendly League

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Opponent Rating Result
Peter Logan 1554 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1154 = (1554 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
John Moxham 1443 0 - 1
Abbas Ahmed 0 1 - 0
Rayhan Motara 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

614 = (1443 + 400 * (2 - 1)) / 3)