Event: Bolton League Cup Div 1

Opponent Rating Result
Adam Tyton 1897 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1897 = (1897 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Mike J Surtees 2116 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1716 = (2116 + 400 * (0 - 1)) / 1)