Event: Rainham Championship Div 2

Opponent Rating Result
Terry Ogden 1350 1 - 0
Chris D Brown 1457 0 - 1
Gary R Clifford 1489 0 - 1
Andrew C Waters 1885 0 - 1
Robert Springett 1646 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1405 = (7827 + 400 * (1 - 3)) / 5)

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