Event: Division 4

Opponent Rating Result
Danny Graham 1716 0 - 1
Edward T Bromilow 1849 ½ - ½
Rob Jarvis 1564 0 - 1
Graham J Gibson 1582 0 - 1
Ivan Pedro 1390 ½ - ½
Alan J Nelder 1620 0 - 1
Louie Bradley 0 ½ - ½
Trevor FW Lewis 1516 ½ - ½
Keith W Roper 1751 1 - 0
Joshua Pimm 0 0 - 1
Simon Flower 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1072 = (12988 + 400 * (2 - 5)) / 11)

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