Event: Division 4

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Opponent Rating Result
Harry Bryant 1678 ½ - ½
Martin G Baker 1841 0 - 1
David Steyn 1690 ½ - ½
Evan Beachley 1697 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1727 = (6906 + 400 * (1 - 1)) / 4)

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