Career
Early in his career, Dubina competed with Anna Adashkevich on the junior level They placed 13th at the 1996 World Junior Figure Skating Championships. He then teamed up with Anna Kaverzina and began competing for Russia.
In 1999, Dubina teamed up with Victoria Maxiuta.
They originally competed for Russia and placed 6th at the 2000 Russian Figure Skating Championships. They then changed countries to Ukraine.
That partnership ended in 2002. Dubina briefly teamed up with Anastasia Ignatieva, representing Russia.
They competed in national-level competitions in Russia and competed at the 2005 Nebelhorn Trophy, representing Russia.
They withdrew from the competition after the short program (with Victoria Maxiuta).