Event: Division 1

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Opponent	Rating	Result
John Davenport	1945	1 - 0
John H Hodgson	2040	1 - 0
John A White	1991	0 - 1

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

2125 = (5976 + 400 * (2 - 1)) / 3)