Event: Division 2

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Opponent	Rating	Result
Gordon G Sands	1542	1 - 0
Catherine Hiley	1634	0 - 1
Ray Sawyer	1614	½ - ½

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

1597 = (4790 + 400 * (1 - 1)) / 3)