Event: Doncaster League

Opponent Rating Result
Farrell P Clifford 1797 1 - 0
Pete Micklethwaite 2004 1 - 0
Martin S Simmonds 1767 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1989 = (5568 + 400 * (2 - 1)) / 3)

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