Event: MCA Division 4

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Opponent Rating Result
Sean Kane 1628 ½ - ½
John J Grady 1613 0 - 1
Adam Miller 1519 0 - 1
Steve Winstanley 1526 ½ - ½
Charles J Fletcher 1536 ½ - ½
Tom Bates 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1237 = (7822 + 400 * (1 - 2)) / 6)

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Opponent Rating Result
Louis Burt 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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