Event: Doncaster League

Opponent Rating Result
Gary Hinchcliffe 1860 ½ - ½
Neil R Lowther 1878 ½ - ½
Ken Hunter 1773 0 - 1
Gary Hinchcliffe 1860 ½ - ½
Phillip J Battye 1656 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1645 = (9027 + 400 * (0 - 2)) / 5)

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