Feliksas studied and played for University of Notre Dame team, along with his brother Moose Krause. Later he moved to DePaul University and played for their university team. In 1935, along with other Lithuanian Americans, he started teaching Lithuanians how to play basketball. He was Lithuania national basketball team player-coach and team captain during EuroBasket 1937 and EuroBasket 1939. As soon as World War II begun in 1939, Kriaučiūnas and his brother traveled back to the United States. Kriaučiūnas played a total of 19 games, scoring 65 points. He also was the head coach of Lithuania women's national basketball team during the first ever women's EuroBasket in 1938 where Lithuania won silver medals. He also firmly contributed in developing nowadays basketball in Lithuania.