They've participated in the Baloncesto Superior Nacional (BSN) from 1971 to 2009; with breaks in 1994, '98, '99, '05, '06, and '10. They have made the BSN Finals three times in their history, 1979 (vs. the Piratas de Quebradillas), 1997 (vs. Atléticos de San Germán), and 2008 (vs. Capitanes de Arecibo),[3] losing them all.
In 2008, the Gigantes advanced to the league's "Super 6" semifinals. The team earned a lead in this phase and came close to receiving a guaranteed spot in the league's final by defeating the Cangrejeros de Santurce in the final stages of the "Super 6".[4] The Gigantes entered this series with only two games left for qualification.[5] However, Santurce won the second game with score of 99–83.[6] Carolina eventually won the series and eliminated Santurce.[7] The Gigantes and the Capitanes were the teams that advanced to the finals.[8] The series extended to seven games, with both teams winning three games at home.[9] Arecibo won the seventh game with scores of 99–94.[10]
After 12 years of inaction, they returned for the 2021 season.[11][12]
On July 27 2023, the Gigantes De Carolina defeated the Bayamon Vaqueros 80-60 in Game 5 of the BSN Finals, to become the 2023 BSN Champions.[13][14]