[3] Kuzmin won a gold medal in the men's singles at the 2005 ITTF Pro Tour series in Velenje, Slovenia.

[4] He also captured a silver medal, along with his partner Oksana Fadeyeva, in the mixed doubles at the 2007 European Championships in Belgrade, Serbia, losing out to the defending Eastern European pair Aleksandar Karakašević (Serbia) and Rūta Paškauskienė (Lithuania).

[6][7] He received a single bye for the first round match, before losing out to Italy's Mihai Bobocica, with a set score of 1–4.

[8] Kuzmin also joined with his fellow players Alexei Smirnov and four-time Olympian Dmitry Mazunov for the inaugural men's team event.

Kuzmin and his team placed fourth in the preliminary pool round against Japan, Hong Kong, and Nigeria, receiving a total score of three points and three straight losses.