Event: Hillingdon Div 2

Opponent Rating Result
John Clenshaw 1654 0 - 1
David A Stott 1408 ½ - ½
Alexander Horwood 1183 1 - 0
Pavan Parola 1258 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1476 = (5503 + 400 * (2 - 1)) / 4)

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