Event: Div 4 - Athenaeum Cup

Opponent Rating Result
Mark Kirkham 1483 ½ - ½
Ivan Dunnachie 0 ½ - ½
Paul Wheatley 1802 0 - 1
Rosie Irwin 1169 ½ - ½
Steve Daykin 1333 ½ - ½
Michael Hughes 0 0 - 1
Brian England 0 1 - 0
Mark Kirkham 1483 ½ - ½
Joshua Tedder 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

808 = (7270 + 400 * (2 - 2)) / 9)

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