Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
Mark Philip Baldock 1468 1 - 0
Stephen Livermore 1622 ½ - ½
Ben Yelverton 1734 ½ - ½
Dan Joal Allwin Christopher 0 ½ - ½
Alex Wheeler 1419 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1329 = (6243 + 400 * (1 - 0)) / 5)

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