Event: C Division

Opponent Rating Result
David Kierman 1750 1 - 0
Reg P Clucas 1926 0 - 1
Jeff Mason 1748 0 - 1
William O'Rourke 1880 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1826 = (7304 + 400 * (2 - 2)) / 4)

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