Kemzūra started out as a guard in Atletas Kaunas. He averaged 6.5 points per game, 2.5 rebounds and 1 assist in Saporta Cup his first year. His next year was more successful – he recorded 12.5 points per game, 2 rebounds and 3 assists. In 1996, he moved to Šilutė and then to Lietuvos Rytas Vilnius for the 1998–99 season, where he became a playing coach. Kemzūra left the team in November and played for Kalnapilis Panevėžys. In 2000, he starred in Korać Cup with BC Sema. His last playing season was the 2000–01 season, in which he played for Swans Gmunden. Kemzūra also played temporarily for Lithuania national basketball team in 1994, when the team was qualifying for a spot in the EuroBasket 1995.

After leaving Gmunden Swans, Kemzūra pursued coaching career. During the 2001–02 season, he was hired by Beşiktaş as an assistant coach. The following year, he moved to Lietuvos Rytas Vilnius as an assistant coach and then as a head coach. For the next three years, he spent his life coaching Dynamo Saint Petersburg and Benetton Treviso. In 2007, Kemzūra became the head coach of Khimki Moscow Region; he was replaced by Sergio Scariolo in December 2008. In December 2009, he signed a coaching contract with Lokomotiv Kuban Krasnodar. He left the team a year later. After a two-year hiatus, Kemzūra returned to coach clubs, signing a contract with Asseco Prokom Gdynia in July 2012. He left Prokom in January. In June, he became head coach for ČEZ Basketball Nymburk.

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Wikipedia