Event: U1800 Cup

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Opponent	Rating	Result
Thomas Sheat	1836	1 - 0
Robert L Jones	1711	½ - ½
Angus Irving	1769	0 - 1

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

1772 = (5316 + 400 * (1 - 1)) / 3)