Event: Division A

Opponent Rating Result
Neville H Twitchell 1973 1 - 0
Sean Colliety 1858 ½ - ½
John Cawdery 2089 1 - 0
John Cawdery 2089 ½ - ½
Peter W Rose 1827 ½ - ½
Jeffrey Page 1685 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2120 = (11521 + 400 * (3 - 0)) / 6)

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