He averaged 6.5 points, 2.5 rebounds and 1 assist per game in the FIBA Saporta Cup competition's 1992–93 season, in his first year.

[1] His next year he had better stats, as he recorded 12.5 points, 2 rebounds and 3 assists per game in the Saporta Cup's 1993–94 season.

Kemzūra then signed a contract to be the head coach of the Polish club Asseco Prokom Gdynia, in July 2012.

In December 2016, he became an assistant coach of the Turkish EuroLeague side Darüşşafaka, after Ainars Bagatskis' decision to leave the team.

[10] On 6 October 2019, Blatt resigned, and Kemzūra became the temporary interim head coach of the team.

[12] On 20 October 2019 Olympiacos announced that Kemzūra would remain as the head coach of the team, until the end of the 2019–20 season.

He was later, however, replaced by Georgios Bartzokas[13] On 28 March 2023, Kemzūra was appointed as head coach of the newly established Lithuanian club BC Wolves.

[15] At the EuroBasket 2005 and 2006 FIBA World Championship, Kemzūra served as an assistant coach with the senior Lithuanian national team.