Event: Division 4

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Opponent Rating Result
Huw Davies 1215 ½ - ½
Penny A Wood 1421 0 - 1
Rhys Hardman 1100 1 - 0
Angela Pates 1259 1 - 0
Richard Buxton 1452 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1289 = (6447 + 400 * (2 - 2)) / 5)

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Opponent Rating Result
Rhys Hardman 1100 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1500 = (1100 + 400 * (1 - 0)) / 1)