Event: Division 2

Opponent Rating Result
Robert P Taylor 1753 ½ - ½
Neil Sheffield 1205 1 - 0
Grenville Wollerton 1723 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1694 = (4681 + 400 * (1 - 0)) / 3)

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