Event: 5th Simon Bartlett Memorial Minor

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Opponent	Rating	Result
Mac Holland	0	0 - 1
Steven E Cawser	1500	0 - 1
Barry Lippard	1399	1 - 0

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

833 = (2899 + 400 * (1 - 2)) / 3)