Event: MCA Division 4

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Opponent Rating Result
Joel Bartlett 1815 0 - 1
Steve Winstanley 1456 ½ - ½
Iain Smith 1621 0 - 1
Nick Wiggett 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1123 = (4892 + 400 * (1 - 2)) / 4)

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