Event: Division 2

Opponent Rating Result
William Burgess 1773 0 - 1
Angok Jok 1707 1 - 0
Kevin N Bendall 1646 1 - 0
Robert Lacey 1555 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1770 = (6681 + 400 * (2 - 1)) / 4)

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