Event: A Division

Opponent Rating Result
David C Baillie 182 0 - 1
Nicholas Tavoularis 203 ½ - ½
Virgil Szekely 187 ½ - ½
Chris N Ross 211 0 - 1
Bill Wilson 160 1 - 0
David C Baillie 182 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

54 = (1125 + 400 * (1 - 3)) / 6)

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