Event: Division A

Opponent Rating Result
George Markovic 139 ½ - ½
Carl A Tillotson 143 ½ - ½
Harry Newman 85 1 - 0
Graham J Ashcroft 161 0 - 1
Dave S Almond 133 ½ - ½
Gareth Ellis 138 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

200 = (799 + 400 * (2 - 1)) / 6)

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