World Snooker Championship 2013: Davis upsets John Higgins
Four-time champion John Higgins is knocked out in the first round of the World Championship after losing 10-6 to Mark Davis on Monday.
The Scot was already trailing 9-6 when he fouled while potting a green, and his opponent made a break of 87 to go through at the Crucible.
Higgins says he "doesn't know" how he missed certain shots, but admits Davis "punished" them.
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