Event: Division 4B

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Opponent Rating Result
Gregory Sumner 1445 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1445 = (1445 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Charliey Cooper 1240 1 - 0
Joseph T Fearnhead 1396 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1318 = (2636 + 400 * (1 - 1)) / 2)