Event: Division Three

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Opponent	Rating	Result
Garry Evans	1670	0 - 1
Mike Peers	1429	1 - 0
Stephen R Wilcox	1711	0 - 1

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

1470 = (4810 + 400 * (1 - 2)) / 3)