Event: Whittlesford (Open)

Opponent Rating Result
Phil Hopkins 2035 0 - 1
Aarnavh Trivedi 1953 0 - 1
Neil H Bradbury 2339 1 - 0
David N Walker 1900 1 - 0
Peter A Gemmell 2035 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1972 = (10262 + 400 * (2 - 3)) / 5)

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