Event: Open County Championship

Opponent Rating Result
Senthil Murugan Palaneappan 1892 1 - 0
Colin J Solloway 1650 ½ - ½
Andrew D Hartland 1869 ½ - ½
Colin J Solloway 1650 ½ - ½
Colin Emery 1725 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1917 = (8786 + 400 * (2 - 0)) / 5)

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