Event: SCCU County Championship: u1650

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Opponent	Rating	Result
Cormac O'Caolaidhe	1630	0 - 1
David Flewellen	1643	0 - 1

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

1237 = (3273 + 400 * (0 - 2)) / 2)