Event: Division 4

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Opponent Rating Result
Hanif Zaman 1712 0 - 1
Aanuoluwapo John Awesome 1829 ½ - ½
David J jnr Foster 1193 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1578 = (4734 + 400 * (1 - 1)) / 3)

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