Event: Summer League Division 3

Opponent Rating Result
Thomas Hancock 1597 ½ - ½
Mark Kirkham 1490 1 - 0
Tom R W Edwards 1477 ½ - ½
Stefan Lewins 1595 1 - 0
Steve Daykin 1357 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1743 = (7516 + 400 * (3 - 0)) / 5)

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