Event: SCL Div 5

Opponent Rating Result
N George 1393 0 - 1
Rosamund Hale 1480 1 - 0
Alan Weaver 1257 1 - 0
Daniel Phillips 1435 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1491 = (5565 + 400 * (2 - 1)) / 4)

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