Event: Division 2

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Opponent Rating Result
John E Parr 1456 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1856 = (1456 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Ellis Howard 1560 0 - 1
Richard Zaidman 1684 1 - 0
Paul Butterworth 1772 0 - 1
Greg Harding 1642 1 - 0
Dave Sykes 1550 1 - 0
Mick Overend 1536 1 - 0
Victor Ibealozie 1284 1 - 0
Ian Goater 1418 ½ - ½
Andrew B Mata 1933 0 - 1
Paul Edwards 95 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1487 = (14474 + 400 * (5 - 4)) / 10)