Event: Norfolk & Norwich Challengers

Opponent Rating Result
Mark Nicholls 1455 1 - 0
Jack Packwood-Clarke 1400 1 - 0
Brian J Cunningham 1596 ½ - ½
James Casey 1772 1 - 0
Pranavsuriya Kumarvimala 1465 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1778 = (7688 + 400 * (3 - 0)) / 5)

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