Event: Division 2

Opponent Rating Result
John Liddle 1859 0 - 1
James Turner 2007 0 - 1
Murray Pollock 1870 1 - 0
John Boyd 2051 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1947 = (7787 + 400 * (2 - 2)) / 4)

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