Smith played with the Denver Nuggets, the Portland Trail Blazers, the Miami Heat, the Los Angeles Clippers, and the San Antonio Spurs in the NBA.

A prolific scorer, he starred in European national leagues with Makedonikos Kozani, Virtus Bologna, and Efes Istanbul.

With the Italian League team Scavolini Pesaro in 2005, he won the first-ever Alphonso Ford Trophy, as he was the best scorer in the 2004–05 EuroLeague season.

He was also named the Finals MVP of the ULEB Cup (now called EuroCup) in the 2006–07 season, while playing with the Spanish ACB League club Real Madrid.

He moved back to the Turkish Basketball Super League for the 2008–09 season, when he signed with Efes Pilsen.