Event: Denis Otter

Opponent Rating Result
John Whitfield 155 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-245 = (155 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
John Moxham 0 1 - 0
Ray Sutcliffe 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

200 = (0 + 400 * (1 - 0)) / 2)