Tony returned to The University of Missouri-Kansas City (2021) and completed his bachelor's degree in Science with a Minor in Communication Studies.

Tony also received the UMKC Chancellor's Historically Under-Represented Minority Award and Scholarship at the University of Missouri-Kansas City's Bloch business school and is currently seeking his Executive master's degree in Business Administration (MBA).

His best year as a pro came during the 1995–96 season as a member of the Mavericks, appearing in 67 games (12 starts) and averaging 11.6 ppg, including a 39-point effort against the Suns on January 12, 1996.

On December 26, 1996, Dumas was traded by the Dallas Mavericks with Jason Kidd and Loren Meyer to the Phoenix Suns for Sam Cassell, Michael Finley, A.C. Green and a 1998 2nd round draft pick (Greg Buckner was later selected).

Due to injury Dumas played a total of 6 games in that season as the Suns reached the playoffs with a 40 win team and faced the Seattle SuperSonics in the first round.

Despite being out-talented, the Suns played well in the series and forced the SuperSonics to 5 games before ultimately falling short.