Event: Mini League

Opponent Rating Result
Paul RH Clarke 1749 1 - 0
Lackson Mzizi 1903 0 - 1
John Grasham 1654 ½ - ½
Paul Howden 1775 0 - 1
Rupert W Jones 1799 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1696 = (8880 + 400 * (1 - 2)) / 5)

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