Event: Rainham Championship Div 2

Opponent Rating Result
Chris D Brown 1590 ½ - ½
Robert Springett 1653 ½ - ½
Gary R Clifford 1568 1 - 0
Chris D Brown 1578 ½ - ½
Gary R Clifford 1558 0 - 1
Robert Springett 1664 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1602 = (9611 + 400 * (1 - 1)) / 6)

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