Event: Division B

Opponent Rating Result
Geoffrey Pennington 1765 ½ - ½
Darren Pickering 1548 1 - 0
Darren Pickering 1548 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1754 = (4861 + 400 * (1 - 0)) / 3)

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