Throughout his career he has played in Uruguay, Argentina, Australia, Italy, Russia, Israel, Turkey, Jordan, Lebanon, Mexico and Saudi Arabia.

[7] In his only season there, Dia averaged 8.5 points, 5.2 rebounds and 3.2 blocks per game, playing as a center on a team that was named the 8th best in the nation by USA Today.

[9] Dia signed to play for Georgetown in August 1993,[8] having already talked with the program's coaching staff during his recruitment process in Senegal.

Dia received less playing time in 1994–95 (5.7 minutes per game), and posted career lows in points (1.6) and rebounds (1.8).

[14] In his junior year, Dia played all 37 games, always as a reserve, and improved his averages to 2.9 points and 3.9 rebounds, while shooting a career-high 53.3% from the field.

[16] After the end of the 1995–96 season, Georgetown lost two of its main frontcourt players, Othella Harrington and Jerome Williams, and Dia was included in the starting lineup by coach Thompson, being named team captain.

Dia participated in trials with several NBA teams, among which the Miami Heat, the Milwaukee Bucks and the Washington Wizards.

[21] After one season in the Liga Uruguaya de Basketball, Dia moved to Argentina, where he played for Regatas San Nicolás.

[1] His performances in Uruguay earned him the interest of the West Sydney Razorbacks, that signed him in July 1999, as the team needed a center.

Dia left Australia in 2001, and played for Argentinian club Quilmes in the Liga Nacional de Básquet: he averaged 15.7 points and 9.7 rebounds over 14 appearances.

[23] After playing in Jordan with Arena Amman, in October 2006 he went back to Australia and signed another contract with the West Sydney Razorbacks.