Event: Division 1

Opponent Rating Result
Robert Ashworth 1856 ½ - ½
Edward Small 1817 1 - 0
Jonathan Day 1856 ½ - ½
John Lightowler 1694 ½ - ½
Rob E Wilden 1748 0 - 1
Harry Davison 1819 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1865 = (10790 + 400 * (2 - 1)) / 6)

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