Event: Doncaster League

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Opponent Rating Result
Peter Convery 1891 ½ - ½
Ismet Berisha 1680 0 - 1
Andrew Butterworth 1929 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1700 = (5500 + 400 * (0 - 1)) / 3)

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Opponent Rating Result
Martin Presley 1656 0 - 1
Luke J Smith 0 1 - 0
Richard F Hall 1763 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1140 = (3419 + 400 * (1 - 1)) / 3)