Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
David J Payne 1744 0 - 1
Armando Galletti 1700 1 - 0
Junaid Ahmed 0 0 - 1
Dennis G Driscoll 1339 1 - 0
Mark Philip Baldock 1465 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1330 = (6248 + 400 * (3 - 2)) / 5)

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