Event: Division 1

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Opponent	Rating	Result
M John Cawston	1778	0 - 1
Dante Doros	1541	½ - ½
Paul May	1882	1 - 0

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

1734 = (5201 + 400 * (1 - 1)) / 3)