Event: Division A

Opponent Rating Result
Luke Davidson 0 0 - 1
Carl A Tillotson 1694 ½ - ½
Philip N Raynor 1731 1 - 0
Graham J Ashcroft 1866 0 - 1
Alan Pidcock 1811 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1340 = (7102 + 400 * (1 - 2)) / 5)

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