Event: Division 2

Opponent Rating Result
Ronald J Kiff 136 1 - 0
Ronald C Andriessen 123 1 - 0
Andrew E James 137 1 - 0
Robert Ashworth 155 1 - 0
Barry Whitelaw 135 ½ - ½
John H Sleggs 118 ½ - ½
Ian P Blencowe 123 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

361 = (927 + 400 * (4 - 0)) / 7)

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