Event: Division 2

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Opponent	Rating	Result
Michael WA Hoare	1650	0 - 1
Michael WA Hoare	1650	0 - 1
Keith Thomas	1664	0 - 1

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

1255 = (4964 + 400 * (0 - 3)) / 3)