Event: League Division 2

Opponent Rating Result
Jack Booker 1838 ½ - ½
Vidur Bhalavat 1620 1 - 0
Keith J Riach 1661 ½ - ½
John Grasham 1690 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1802 = (6809 + 400 * (1 - 0)) / 4)

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