Event: Division 2

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Opponent Rating Result
Ioannis Stefanis 1275 ½ - ½
Peter M Collins 1729 ½ - ½
Rory Melough 1275 0 - 1
Shane Cooksey 1482 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1440 = (5761 + 400 * (1 - 1)) / 4)

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