Event: Division Three

Opponent Rating Result
Derek Ludlam 110 0 - 1
Alex Leggat 121 0 - 1
Simon Johnson 141 ½ - ½
Derek Ludlam 110 ½ - ½
Sai C Kumar 123 ½ - ½
Robert Pells 131 0 - 1
Andrew Walker 101 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

5 = (837 + 400 * (1 - 3)) / 7)

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