Event: Division 1

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Opponent Rating Result
Russell P White 2155 0 - 1
David Castellanos Palop 1900 1 - 0
Stephen Middleton 1948 1 - 0
Andrew E Robertson 1868 ½ - ½
Ashley Freeman 2000 ½ - ½
John Cawdery 2068 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2057 = (11939 + 400 * (2 - 1)) / 6)

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