Event: U1650 Cup

Opponent Rating Result
John E Lambert 1563 1 - 0
Warwick Estlea 1480 0 - 1
Ken Lunn 1503 1 - 0
John Barty 1285 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1558 = (5831 + 400 * (2 - 1)) / 4)

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