Event: Division 4

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Opponent Rating Result
Alex Bourke 1889 ½ - ½
Noel M Stewart 1671 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1780 = (3560 + 400 * (0 - 0)) / 2)

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Opponent Rating Result
Tim Wells 1722 1 - 0
Alessio Cossali 0 1 - 0
Jack Virgin 1881 0 - 1
Peter Grant-Ross 1682 ½ - ½
Connor Probert 1500 0 - 1
Tyrone R Jefferies 1567 0 - 1
Simon Holin 1633 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1312 = (9985 + 400 * (2 - 4)) / 7)