Event: D&DCL Div 3

Opponent Rating Result
Pierre Reynaud 1533 1 - 0
David JF Woodhouse 1619 1 - 0
Philip Sheldon 1641 ½ - ½
Keith Walsh 1655 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1912 = (6448 + 400 * (3 - 0)) / 4)

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