Event: NSDCA Division 1

Opponent Rating Result
Michael A Lee 1711 1 - 0
MW Copeland 1774 1 - 0
Harry Gardiner 1876 0 - 1
David Lambton 1792 0 - 1
Michael A Lee 1711 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1693 = (8864 + 400 * (2 - 3)) / 5)

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