Event: Division 2

Opponent Rating Result
Julian Clark 149 0 - 1
Henry L Shaw 123 0 - 1
Brian J Izzard 118 ½ - ½
Robert A Lanzer 141 0 - 1
Ian J Philipson 127 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-108 = (658 + 400 * (0 - 3)) / 5)

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