Event: Division 3

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Opponent	Rating	Result
Michael WA Hoare	1609	0 - 1
Alex Hodgkiss	1200	1 - 0
James Topp	1390	1 - 0

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

1533 = (4199 + 400 * (2 - 1)) / 3)