Event: Division C

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Opponent Rating Result
Martin Craven 100 1 - 0
Liam Bromley 103 ½ - ½
Andrew Lane 100 0 - 1
Joseph Tantram 90 0 - 1
Shaun Clarkson 100 0 - 1
Geoff Key 57 1 - 0
Marjorie A Ellison 70 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

89 = (620 + 400 * (3 - 3)) / 7)

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