Event: Div4

Opponent Rating Result
Mohinderpal Samra 81 0 - 1
Andy McCafferty 48 1 - 0
Ian R Morrell 59 1 - 0
Mohinderpal Samra 82 0 - 1
Stuart Smitton 64 1 - 0
Mohinderpal Samra 82 0 - 1
Andy McCafferty 48 ½ - ½
Norman W Parkin 95 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

20 = (559 + 400 * (3 - 4)) / 8)

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