Guoga is currently a major sponsor of the Lithuanian Basketball Federation.
When the country's national team failed to directly qualify for the 2010 FIBA World Championship in Turkey and had to apply for a wild-card entry, he paid a large share of the application fee of €500,000.
The team was chosen for the tournament, and won the bronze medal with TONYBET printed on their jerseys.
He was the national basketball team's manager from 2010 until 2012 and served as the vice-president of the Lithuanian Basketball Federation.
He was also the main sponsor of BC Prienai, a professional basketball club.

In 2014, Guoga became the vice-president of the Lithuanian Rowing Federation.
Guoga is currently a major sponsor of the Lithuanian Basketball Federation. When the country's national team failed to directly qualify for the 2010 FIBA World Championship in Turkey and had to apply for a wild-card entry, he paid a large share of the application fee of €500,000. The team was chosen for the tournament, and won the bronze medal with TONYBET printed on their jerseys. He was the national basketball team's manager from 2010 until 2012 and served as the vice-president of the Lithuanian Basketball Federation. He was also the main sponsor of BC Prienai, a professional basketball club.
In 2014, Guoga became the vice-president of the Lithuanian Rowing Federation.
Antanas Guoga