Event: Division A

Opponent Rating Result
David A Phillips 181 0 - 1
Conor Reaney 173 ½ - ½
Malcolm R Peacock 185 ½ - ½
Philip N Raynor 145 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

71 = (684 + 400 * (0 - 1)) / 4)

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