Event: Division 1

Opponent Rating Result
Max Parkhouse 1897 0 - 1
Martina Flint 1875 ½ - ½
Simon Chester 1825 ½ - ½
Adam Ismail 1909 1 - 0
Paul A Johnson 1863 ½ - ½
Simon D Arnold 0 0 - 1
Adam Ismail 1911 ½ - ½
Alexander Roberts 1851 0 - 1
Arron Barker 1928 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1540 = (15059 + 400 * (1 - 4)) / 9)

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