Event: Doncaster League

Opponent Rating Result
John E Beech 1665 0 - 1
Martin J Sheard 1872 0 - 1
Colin Parrish 1540 0 - 1
T Ed Sowerby 1603 0 - 1
Martin S Simmonds 1784 ½ - ½
Steven Devonshire 1580 ½ - ½
Martin Presley 1642 0 - 1
Martin S Simmonds 1766 ½ - ½
Steven R Brooks 1554 ½ - ½
Richard E Desmedt 1794 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1440 = (16800 + 400 * (0 - 6)) / 10)

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