Event: Division 2

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Opponent	Rating	Result
John D Kimber	1805	1 - 0
Jeffrey Boardman	1971	1 - 0
W John Marshall	1782	1 - 0

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

2253 = (5558 + 400 * (3 - 0)) / 3)