Event: Division 4

Opponent Rating Result
Huw Davies 1222 ½ - ½
Penny A Wood 1448 1 - 0
Richard Meakins 1786 0 - 1
Michael Campling 1164 1 - 0
Tony Plackowski 1219 0 - 1
Joe Riat 1000 1 - 0
Mike J Johnson 1603 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1406 = (9442 + 400 * (3 - 2)) / 7)

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