Event: Kenneth Appleby (U1700)

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Opponent	Rating	Result
Keith J Riach	1670	0 - 1
Nigel Stansbie	1423	0 - 1
Simon Bartle	1141	0 - 1
Pete Brennan	1493	0 - 1

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

1032 = (5727 + 400 * (0 - 4)) / 4)