Event: Division 4

Opponent Rating Result
Drew Harbidge 1450 0 - 1
Richard Maconnachie 1323 0 - 1
Daniel Wilkinson 1550 0 - 1
Chris Brown 1394 1 - 0
Sophie Mehta 1428 0 - 1
Stephen Holmes 1075 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1103 = (8220 + 400 * (1 - 5)) / 6)

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