Event: U1850

Opponent Rating Result
Praveen Ravichandran 1620 1 - 0
Peter G Sherlock 1554 ½ - ½
Louis Cowell 1627 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1600 = (4801 + 400 * (1 - 1)) / 3)

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