Event: Worcestershire Rapidplay league

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Opponent Rating Result
Mark Bethel 1810 0 - 1
Chris Lee 1612 1 - 0
Jamie Steward 1584 0 - 1
Che Adams 0 ½ - ½
John H Loynes 0 0 - 1
Mark Bethel 1810 ½ - ½
Chris Lee 1612 1 - 0
Jamie Steward 1584 ½ - ½
Che Adams 0 1 - 0
John H Loynes 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

961 = (10012 + 400 * (3 - 4)) / 10)

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