Event: Division 2

Opponent Rating Result
Jerry Bowman 1350 1 - 0
Alan Wadsworth 1659 1 - 0
Robert L Jones 1683 0 - 1
Eugene Husband 1575 ½ - ½
Ian Spicer 1446 1 - 0
Linhao Sha 1781 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1716 = (9494 + 400 * (3 - 1)) / 6)

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