Event: MCA Division 1

Opponent Rating Result
Brian R Ewart 1825 0 - 1
Graham AG Williamson 1825 0 - 1
David F Pearcey 1825 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1425 = (5475 + 400 * (0 - 3)) / 3)

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