Event: C Division

Opponent Rating Result
Darren John Donnison 1443 ½ - ½
Peter R Archer 1509 ½ - ½
Peter McKay 1636 0 - 1
Peter R Archer 1509 1 - 0
Peter Harker 1758 0 - 1
James Urwin 1271 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1521 = (9126 + 400 * (2 - 2)) / 6)

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