Event: Division 3

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Opponent Rating Result
Amy John 1589 ½ - ½
Anthony Taylor 1552 0 - 1
Alan J Lewis 1527 ½ - ½
Tom Gordon 1600 0 - 1
Alan J Lewis 1517 1 - 0
Mark Nowers 1200 ½ - ½
Alonso Paez 1605 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1513 = (10590 + 400 * (2 - 2)) / 7)

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