Event: Division 2

Opponent Rating Result
Colin L Ellis 1515 ½ - ½
Mark Oakden 1595 0 - 1
Andrew N Salmon 1838 0 - 1
Richard Roberts 1550 0 - 1
Andrew Todd 1525 ½ - ½
Gerald M Conley 1687 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1418 = (9710 + 400 * (0 - 3)) / 6)

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