Event: Division 2

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Opponent Rating Result
Natalie Haydock 1381 1 - 0
Chris Stansfield 1455 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1418 = (2836 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Peter Hurn 1575 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1175 = (1575 + 400 * (0 - 1)) / 1)