Event: Division 4

Opponent Rating Result
Ashton Grimmett 1720 0 - 1
Mark Payne 1814 1 - 0
Peter J Horlock 1702 0 - 1
David Charters 1590 1 - 0
Iain Reeve 1692 0 - 1
Harriet Haslehurst 1646 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1627 = (10164 + 400 * (2 - 3)) / 6)

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