Event: Division 2

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Opponent Rating Result
Robert Catlow 0 1 - 0
Keith Melling 109 ½ - ½
Peter Logan 117 ½ - ½
Steven M Flaherty 118 1 - 0
Peter Hurn 104 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

250 = (448 + 400 * (2 - 0)) / 5)

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