I'm an idiot for putting you together: Danny O'Donoghue regrets his decision to pit Karl against Nadeem as he struggled to send one boy home on The Voice

Danny O'Donoghue was faced with an agonising decision on Saturday night as two of his best performers were pitted against each other in the battle stage of The Voice. 



The Irishman was kicking himself after placing Karl and Nadeem in the same round of the BBC talent show.



Both boys had been struggling to make it in the music industry - with Karl previously loosing a recording deal and