Event: SCCU County Championship: U1850

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Opponent	Rating	Result
Ian P Morgan	1785	½ - ½
Austin Ivan	1761	0 - 1
Igor Naumov	1804	½ - ½
Paul C Rutland	1795	½ - ½
Steve Madden	1805	0 - 1

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

1630 = (8950 + 400 * (0 - 2)) / 5)