Event: Division 2

Opponent Rating Result
Michael J Saunders 1777 1 - 0
Tom A Barton 1908 ½ - ½
Ken W Clow 1870 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1852 = (5555 + 400 * (1 - 1)) / 3)

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