Event: Division 4

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Opponent Rating Result
Keith Milner 1357 0 - 1
Elliot Ward 1050 0 - 1
Matthew Blackwell 1228 0 - 1
Jack T Smith 1407 1 - 0
Jack T Smith 1407 0 - 1
Giorgio Kelly 1482 1 - 0
David Smith 1121 0 - 1
David Smith 1121 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1172 = (10173 + 400 * (3 - 5)) / 8)

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