Event: NCCA League Division 3

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Opponent	Rating	Result
Robin Blackwell	1765	0 - 1
Jonathan R Reeve	1625	0 - 1
Steve Sanders	1600	0 - 1
Gerry Clayton	1460	1 - 0
Graham R Jones	1496	½ - ½
Chris Cook	1369	1 - 0
Alex J Evans	1595	1 - 0
Mark A Nettleton	1485	1 - 0

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

1599 = (12395 + 400 * (4 - 3)) / 8)