Event: Spring OTB Division 4

Opponent Rating Result
Anthony E Hunt 1565 1 - 0
John Ryan 1885 ½ - ½
Dave S Almond 1730 0 - 1
David J Fowler 1665 0 - 1
Geoff Swallow 1580 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1685 = (8425 + 400 * (2 - 2)) / 5)

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