A man has been found guilty of causing grievous bodily harm after attacking a ballet dancer in Cardiff in November 2011.
Mohammed Ali Mohamoed, 28, broke the neck of Jack Widdowson, 19, from Somerset.
Mohamoed, from Splott, was cleared of a charge of attempted murder.
A judge at Cardiff Crown Court sentenced him to 13 years in jail.
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The horse had unseated his rider and was running loose when presenter Hayley Moore grabbed the reins.