Event: Division 2

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Opponent Rating Result
Richard Zaidman 1621 0 - 1
Steve Harrington 1637 0 - 1
Haabeel Shah 1314 1 - 0
Ralph Barraclough 1567 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1435 = (6139 + 400 * (1 - 2)) / 4)

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Opponent Rating Result
Mick Overend 1515 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1915 = (1515 + 400 * (1 - 0)) / 1)