Event: Rainham Championship Div 2

Opponent Rating Result
Andrew C Waters 1886 ½ - ½
Gary R Clifford 1489 ½ - ½
Terry Ogden 1350 1 - 0
Tyrone R Jefferies 1564 ½ - ½
Chris D Brown 1574 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1733 = (7863 + 400 * (2 - 0)) / 5)

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