Event: Division 2

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Opponent Rating Result
Mark R A Murrell 1857 ½ - ½
Stephen L Wedlock 1880 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1669 = (3737 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Oliver King 1200 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

800 = (1200 + 400 * (0 - 1)) / 1)