Event: D&DCL Div 3

Opponent Rating Result
Michael D Boreham 1527 0(def) - 1
Colin Ross 1414 ½ - ½
Edward Brown 1478 1 - 0
Ryan Witham 1399 1 - 0
Roger W Walker 1597 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1672 = (5888 + 400 * (2 - 0)) / 4)

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