Event: Sheffield Mini Standardplay OTB

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Opponent Rating Result
Daniel J Clayton 1578 0 - 1
Rosie Irwin 119 1 - 0
Jamie Wright 119 0 - 1
Elliott Harris 119 ½ - ½
Oliver Dewis 119 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

251 = (2054 + 400 * (1 - 3)) / 5)

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