Event: New England Club Ladder

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Opponent Rating Result
Norman Wedley 0 0 - 1
Peter N Walker 0 0 - 1
Peter N Walker 0 0 - 1
Jim Jennings 1331 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

133 = (1331 + 400 * (1 - 3)) / 4)

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