Event: Division A

Opponent Rating Result
Cliff H Rutlidge 1848 ½ - ½
Martyn Hamer 2125 ½ - ½
Oleg Cukovs 1855 0 - 1
Kenny Quinn 1870 1 - 0
Alan Pidcock 1803 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1820 = (9501 + 400 * (1 - 2)) / 5)

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