Event: MET Harvey Cup

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Opponent	Rating	Result
Adrian Davey	1680	½ - ½
Vijay Katukuri	1611	0 - 1
Paul C Rutland	1774	½ - ½
Gavin Josephs	1742	0 - 1
Vladimir Shmarov	1589	0 - 1
Roy W Parsons	1736	1 - 0
David C Helsby	1736	0 - 1

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

1524 = (11868 + 400 * (1 - 4)) / 7)