Event: SCL Div 4

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Opponent	Rating	Result
Robert Sims	1508	½ - ½
Scott Leadbetter	1671	1 - 0
John Schonenberger	1522	1 - 0
Dave J Elliott	1683	0 - 1
Oliver Williamson	1597	0 - 1
Scott Leadbetter	1694	0 - 1
Ashraf Syed	1631	½ - ½
Matthew Johnson	1437	1 - 0

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

1593 = (12743 + 400 * (3 - 3)) / 8)