Event: Mini League

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Opponent Rating Result
Mike Bramson 1951 0 - 1
John Hipshon 1732 ½ - ½
Paul RH Clarke 1781 ½ - ½
Michell Rosamonte 1489 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1738 = (6953 + 400 * (1 - 1)) / 4)

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