Career
He competed for much of his career with Marina Aganina. They were the 2004-2005 Uzbekistani national champions. They placed 16th at the 2006 Winter Olympics.
Knyazev previously competed with Irina Galkina and Irina Shabanova.
During the later part of their partnership, he helped coach himself and Aganina. He currently co-coaches Aganina and her new partner.
(with Aganina).