Event: Roger Goldsmith Div 1

Opponent Rating Result
Benjamin Varea 1499 ½ - ½
Alan Wadsworth 1709 ½ - ½
Robert L Jones 1672 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1760 = (4880 + 400 * (1 - 0)) / 3)

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