Event: 4-Board Division 1

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Opponent	Rating	Result
Keith Thompson	1792	0 - 1
David Atkin	1406	1 - 0
Steve J Thrower	1483	1 - 0

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

1694 = (4681 + 400 * (2 - 1)) / 3)