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Event: Five Counties Div 2

Opponent Rating Result
Ron Foale 1491 1 - 0
Satyam Kumar 1314 0 - 1
Leo Demyan 1129 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1178 = (3934 + 400 * (1 - 2)) / 3)

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