Event: Roger Goldsmith Div 2

Opponent Rating Result
Craig Bradshaw 1405 1 - 0
Zbynek Strela 1450 ½ - ½
Robert L Jones 1712 0 - 1
Lawrence Garside 1500 ½ - ½
Dan Mciver 800 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1453 = (6867 + 400 * (2 - 1)) / 5)

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