Event: Division 4

Opponent Rating Result
John D Manger 1705 ½ - ½
Mike Griffiths 1473 1 - 0
Quentin Jacquemard 1548 0 - 1
David P Holmes 1306 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1608 = (6032 + 400 * (2 - 1)) / 4)

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