Event: Div4

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Opponent Rating Result
Brian Lever 118 1 - 0
Harry Madden 113 1 - 0
Dean M Hartley 143 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

525 = (374 + 400 * (3 - 0)) / 3)

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Opponent Rating Result
Tomasz D Adamski 111 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

511 = (111 + 400 * (1 - 0)) / 1)