Event: Belper Club Championships

Opponent Rating Result
Ian R Morrell 1143 1 - 0
Jaime Castro 1818 ½ - ½
Alex Webster 1900 0 - 1
Nigel D Marshall 1555 ½ - ½
Ronald S Harrison 1540 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1671 = (7956 + 400 * (2 - 1)) / 5)

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