Event: Division 3

Opponent Rating Result
Senith Gunarathne 1795 0 - 1
John S Shaw 1762 ½ - ½
Peter W Gorecka-Marshall 1736 ½ - ½
Brian M Hayward 1692 0 - 1
Ronald Watson 1399 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1597 = (8384 + 400 * (1 - 2)) / 5)

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