Event: Stockton Heath Club Championship

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Opponent Rating Result
Jack Signorini 1191 0 - 1
Oliver Ducker 1014 0 - 1
Jan Machnio 694 1 - 0
Ivan Elisseev-Siuda 1034 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

983 = (3933 + 400 * (2 - 2)) / 4)

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