Event: Wycombe & Hazlemere Club Championship

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Opponent	Rating	Result
M Kevin Chojnacki	99	0 - 1
David Brown	104	0 - 1
Malcolm Instone	80	1 - 0(def)
Jonathan T Melsom	152	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-148 = (355 + 400 * (0 - 2)) / 3)