Event: Holly & the Ivy Chess League

Opponent Rating Result
David Booth 1704 ½ - ½
Granville Boot 1859 1 - 0
Gerald Cuaresma 1600 0 - 1
Nick Sykes 137 ½ - ½
David Booth 1730 1 - 0
Granville Boot 1813 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1541 = (8843 + 400 * (2 - 1)) / 6)

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