Event: Norfolk & Norwich Challengers

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Opponent Rating Result
Brian J Cunningham 1590 0 - 1
Murray Raff 1400 1 - 0
David W Moore 1444 1 - 0
Joe Ross 1788 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1656 = (6222 + 400 * (2 - 1)) / 4)

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