Event: Eastman Cup

Opponent Rating Result
John Abbot 1500 1 - 0
Peter J Sullivan 2114 1 - 0
John Abbot 1500 ½ - ½
John D White 1775 1 - 0
Jonathan Rubeck 1880 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2074 = (8769 + 400 * (4 - 0)) / 5)

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