Event: Autumn OTB Division 3

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Opponent	Rating	Result
Vijay Kumar	1608	0 - 1
John Briggs	1570	1 - 0
Mike Swift	1323	1 - 0

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

1634 = (4501 + 400 * (2 - 1)) / 3)