Event: Whittlesford (Open)

Opponent Rating Result
David L Haydon 2403 0 - 1
Norman A Hutchinson 1953 1 - 0
Aarnavh Trivedi 1953 0 - 1
Johnathan D Bourne 1990 ½ - ½
David N Walker 1900 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2040 = (10199 + 400 * (2 - 2)) / 5)

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