Event: u1850 County Championship

Opponent Rating Result
David J Payne 1757 ½ - ½
Matthew P Ball 1758 0 - 1
John WF McAllister 1653 ½ - ½
Ayomikun Adegboye 1732 ½ - ½
Jose Serrano 1692 0 - 1
Daniel Pugh 1624 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1569 = (10216 + 400 * (0 - 2)) / 6)

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