Event: League Division 1

Opponent Rating Result
Richard D Hardy 2030 0 - 1
Brian H Coop 1904 1 - 0
Sam Jacklin 1924 0 - 1
Neil Griffiths 1657 1 - 0
Randolph E Donahue 1789 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1781 = (9304 + 400 * (2 - 3)) / 5)

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