Event: Division 3

Opponent Rating Result
Dariusz Stachowski 113 0 - 1
Nigel C Emson 102 0 - 1
Paul Barnes 20 1 - 0
John Petley 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

59 = (235 + 400 * (2 - 2)) / 4)

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