Event: League Division 2

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Opponent Rating Result
James Bradberry 0 ½ - ½
Peter F Mason 1842 ½ - ½
Steve DG Huxley 1736 ½ - ½
Chris Tatham 1595 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1393 = (5173 + 400 * (1 - 0)) / 4)

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