Event: Yorkshire u18s Team Championship - Division 2

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Opponent Rating Result
Benjamin Layton 1181 0 - 1
Kirin Harrington 1455 0 - 1
Sienna Xu 1027 1 - 0
Sofia Daysh 1062 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

981 = (4725 + 400 * (1 - 3)) / 4)

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