Event: B&DCL Summer League - 2023

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Opponent Rating Result
Mark W Spalding 1391 1 - 0
Michael Jay 1379 ½ - ½
Martin Buse 1500 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1423 = (4270 + 400 * (1 - 1)) / 3)

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