Event: Division 3

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Opponent	Rating	Result
Richard Collis	1513	1 - 0
Gareth Cullen	1710	½ - ½
Michael Townsend	1837	0 - 1

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

1687 = (5060 + 400 * (1 - 1)) / 3)