Event: C Division

Opponent Rating Result
Dave S Almond 1756 ½ - ½
Robin Yeung 1826 1 - 0
Paul Keech 1760 0 - 1
Dave Toole 1843 0 - 1
Gareth NR Griffiths 1733 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1624 = (8918 + 400 * (1 - 3)) / 5)

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