Event: Division 1

Opponent Rating Result
Ray J Burgess 1900 ½ - ½
George Kolbusz 1900 ½ - ½
Ian M Clarke 1975 0 - 1
Martin P Burrows 2260 0 - 1
Alan Agnew 2185 ½ - ½
Ian M Clarke 1975 ½ - ½
Mark L Hebden 2544 0 - 1
Martin P Burrows 2260 ½ - ½
Alan Agnew 2185 0 - 1
Roland E Graf 1885 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1987 = (21069 + 400 * (1 - 4)) / 10)

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