Event: SCCU County Championship: U1850

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Opponent	Rating	Result
Neil J Williams	1741	0 - 1
Alan E Riddoch	1784	1 - 0
Chris Marshall	1791	1 - 0

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

1905 = (5316 + 400 * (2 - 1)) / 3)