Event: League Division Three

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Opponent	Rating	Result
Roy Pugh	0	1 - 0
Nicola Carrouche	1308	1 - 0
Clive Blackburn	0	1 - 0

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

836 = (1308 + 400 * (3 - 0)) / 3)