Event: W/E U1800

Opponent Rating Result
Chris D Brown 1598 0 - 1
Henry Brennan 1474 0 - 1
Peter Finch 1477 0 - 1
Desmond Masterson 1218 1 - 0
Peter Finch 1477 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1209 = (7244 + 400 * (1 - 4)) / 5)

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