Event: Division 1

Opponent Rating Result
Ronan Chan 1925 ½ - ½
Giuseppe Febbo 1656 1 - 0
Dante Doros 1443 0 - 1
David Wm Smith 1726 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1588 = (6750 + 400 * (1 - 2)) / 4)

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