"I'm worried, of course. You can't come off a defeat like that and the manner it was without being worried.
"I'm not going to criticise my players, I'm not going to criticise the team in any shape or form on an individual basis.
"It was a collective effort and we fell down collectively."
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Sandiford, a former legal secretary originally from Redcar, was convicted of drug smuggling offences and sentenced to death in 2013.
Durham Crown Court heard that one of the male victims suffered a triple-fractured jaw, while left lying in the gutter, unconscious.