Event: Essex OL U1800 Championship

Opponent Rating Result
Ruqayyah Rida 1556 ½ - ½
David Smith 1701 0 - 1
Kenneth J Butcher 1650 0 - 1
Neil C Davies 1495 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1301 = (6402 + 400 * (0 - 3)) / 4)

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