Event: U1800 Cup

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Opponent	Rating	Result
Thomas Sheat	1650	0 - 1
Piotr Dolewka	1527	0 - 1
Bernard Ross	1358	0 - 1
Bernard Ross	1291	0 - 1
Danny Harrison	1629	0 - 1
Adrian Sanderson	1497	½ - ½
Laureano Garcia	1680	0 - 1
Adrian Sanderson	1497	½ - ½

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

1216 = (12129 + 400 * (0 - 6)) / 8)