Event: Richard Furness(500) League

Opponent Rating Result
Elliott Barnett 1650 1 - 0
Darren Birch 1100 ½ - ½
Frank Skidmore 1360 0 - 1
Harry Newman 1323 0 - 1
Mike Selway 1098 1 - 0
Frank Skidmore 1360 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1382 = (7891 + 400 * (3 - 2)) / 6)

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