Event: Division 1

Opponent Rating Result
Rob E Wilden 1772 0 - 1
Chris Haynes 1696 0 - 1
William Burgess 1788 1 - 0
Graham K Brown 1664 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (6920 + 400 * (2 - 2)) / 4)

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