Event: Five Counties Div 2

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Opponent	Rating	Result
Anthony CP Milnes	1933	½ - ½
Kate Walker	1677	1 - 0
Pawan Kumar Tarigopula	0	1 - 0
Peter G Lovatt	1801	0 - 1
Robert Parsons	1711	1 - 0
Michael C Price	1684	0 - 1
Emily Maton	1712	½ - ½
Advay Bhat	1231	1 - 0
Sam Sturge	0	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1394 = (11749 + 400 * (4 - 2)) / 9)