Event: Division 2

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Opponent	Rating	Result
John H Schofield	1856	½ - ½
John Whitfield	1823	1 - 0
George Turner	1924	1 - 0

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

2134 = (5603 + 400 * (2 - 0)) / 3)