Also, during the 1988 Dapper Dan Roundball Classic, one of the nation's premier showcases for high school basketball talent, Vega earned the MVP trophy, beating out teammates, and future notable NBA players Alonzo Mourning, Chris Jackson, Billy Owens and Shawn Kemp.
In 1988 he made his debut on the National Superior Basketball League of Puerto Rico (BSN), playing for the Quebradillas Pirates.
He played a total of 18 seasons in Puerto Rico with the Quebradillas Pirates, Caguas Creoles, Ponce Lions, Isabela Fighting Cocks, and the Arecibo Captains, finishing with career averages of 19.6 ppg, 5.3 rpg and a 36% effectiveness in 3pt field goal attempts.
[5] He was also a member of the gold winning Puerto Rican National Basketball Team at the 1994 Goodwill Games held in Saint Petersburg, Russia.
[6] Vega has played professionally in the Continental Basketball Association (CBA), Turkey, Venezuela, Cyprus and in Spain's Liga ACB, where he joined Caja Cantabria during the 1998 season, averaging 18.4 ppg.