Event: Division 3

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Opponent Rating Result
Piotr Zielinski 1595 0 - 1
Olly Blackford 1617 0 - 1
Matt Howells 1482 ½ - ½
Freddie Pick 1605 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1275 = (6299 + 400 * (0 - 3)) / 4)

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