He played basketball professionally in Puerto Rico in the Baloncesto Superior Nacional (BSN).

Feliciano made his debut in the Baloncesto Superior Nacional (BSN) league in 1947 with the UPR of Río Piedras, averaging 7.78 points in 14 games.

In the process he became the first player in the BSN to score 40 or more points in a basketball game, a feat he achieved with the Gallitos de la UPR on September 5, 1949, scoring 46 points in the triumph, 83–66, against the Cardenales de Río Piedras.

At an early age, he became interested in basketball and played at the Escuela Superior de Río Piedras.

In 1945 Feliciano began his studies at the University of Puerto Rico, Río Piedras Campus.