Event: SCCU County Championship: u1650

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Opponent	Rating	Result
Joe Crossley	1521	½ - ½
Cennydd Bowles	1523	½ - ½
Nick Allen	1606	1 - 0

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

1683 = (4650 + 400 * (1 - 0)) / 3)