Event: Division 5

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Opponent Rating Result
Len J Morrell 1413 ½ - ½
Ronald Watson 1409 1 - 0
Jim Wellington 1537 ½ - ½
Alex Clements 981 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1435 = (5340 + 400 * (1 - 0)) / 4)

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