Event: Belper Club Championships

Opponent Rating Result
Sohrab Panday 1885 0 - 1
Alan Holden 1420 0 - 1
Debbie Rogers 0 ½ - ½
Ronald S Harrison 1540 0 - 1
Allan Doyle 1398 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1089 = (6243 + 400 * (1 - 3)) / 5)

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