Event: Hutchinson

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Opponent Rating Result
Ian Jewsbury 1692 0 - 1
Ellis Howard 1582 1 - 0
Dave Sykes 1529 ½ - ½
Stephen Haggas 1545 1 - 0
Nigel Redmond 1665 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1603 = (8013 + 400 * (2 - 2)) / 5)

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