Event: D&DCL Div 1

Opponent Rating Result
Andrew Robins 1750 ½ - ½
Ranjit Nath 1826 ½ - ½
Martin Cobham 1758 ½ - ½
Derek A Jarvis 1865 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1800 = (7199 + 400 * (0 - 0)) / 4)

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