Event: Billingham Synthonia Rapid February 2024

Opponent Rating Result
Geoffrey Garnett 1339 0 - 1
Graham R Marshall 1654 1 - 0
Paul Weightman 1466 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1353 = (4459 + 400 * (1 - 2)) / 3)

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