Event: 4-Board Division 2

Opponent Rating Result
Tim M Turner 167 ½ - ½
Andrew D Bettley 153 1 - 0
Olegs Dukalevs 144 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

421 = (464 + 400 * (2 - 0)) / 3)

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