Event: Division 2

Opponent Rating Result
Stuart P Iles 1782 1 - 0
James Bartram 1643 0 - 1
Jack Lucas 0 1 - 0
John E Richards 1868 1 - 0
Elmira Walker 1737 1 - 0
Jack Tye 1792 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1737 = (8822 + 400 * (5 - 1)) / 6)

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