Event: WDCL Division 2

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Opponent Rating Result
T Ben O'Rourke 1629 0 - 1
Paul A McGrady 1500 1 - 0
Derrick Clarke 1200 1 - 0
Stephen Harrison 1504 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1658 = (5833 + 400 * (3 - 1)) / 4)

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