Event: Worcestershire Rapidplay league

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Opponent Rating Result
Jamie Steward 1592 ½ - ½
Phil Austin 1771 0 - 1
David Spowart 1789 ½ - ½
David Spowart 1789 ½ - ½
Chris Lee 0 0 - 1
Jamie Steward 1592 0 - 1
Phil Austin 1771 0 - 1
David Spowart 1789 1 - 0
David Spowart 1789 1 - 0
Chris Lee 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1308 = (13882 + 400 * (2 - 4)) / 10)

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