Event: Sheffield, 2nd Mini Standardplay Invitational

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Opponent Rating Result
Geoffrey D Brown 1900 1 - 0
Miles D Edwards-Wright 2073 0 - 1
Steve J Gibbs 1758 0 - 1
Stephen K Lee 1675 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1852 = (7406 + 400 * (2 - 2)) / 4)

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