Event: OL Swiss (10 + 5) Rapid 3

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Opponent	Rating	Result
Laurence Duffy	0	1 - 0
David Spearman	2018	0 - 1
Mark RA Murrell	1914	0 - 1
Neil C Davies	0	0 - 1
Davide Segat	1423	0 - 1

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

831 = (5355 + 400 * (1 - 4)) / 5)