Event: Division 2

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Opponent Rating Result
Andrew Milborrow 99 0 - 1
Steve Maguire 955 ½ - ½
Piotr Zielinski 1581 1 - 0
Barry R Davies 1446 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1020 = (4081 + 400 * (1 - 1)) / 4)

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Opponent Rating Result
Elmira Walker 1609 1 - 0
Jack Tye 1807 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1708 = (3416 + 400 * (1 - 1)) / 2)