In 2008, he transferred to Westwind Preparatory Academy in Phoenix, Arizona where as a senior in 2008–09, he earned All-Arizona State honors and was nominated for the McDonald's All-America Team after he averaged 26 points, 14.4 rebounds, six blocks, four assists and three steals per game.

[1][2] In March 2011, Smith declared for the NBA draft, forgoing his final two years of college eligibility.

[5] He appeared in 27 games for Soles before leaving the club in late November to return to the United States in the wake of the NBA lockout concluding.

[13] On November 14, 2013, he injured his right knee during a game against the New York Knicks which resulted in Smith being helped from the floor and missing a month of action.

[19] He made his debut for the team two days later, recording 15 points, 3 rebounds, 6 assists, 1 steal and 1 block as a starter in a 102–98 loss to the Sioux Falls Skyforce.

[21] He made his debut for the Timberwolves later that night in a 104–98 loss to the Washington Wizards, recording four points, one rebound and one assist in 10 minutes off the bench.

[27] In his PBA debut, Smith scored 37 points and grabbed a career-high 30 rebounds in a 116-118 2OT loss to the Phoenix Fuel Masters.

[32] In October 2018, Smith signed with Bank of Taiwan,[33] where he averaged 14.3 points, 13.5 rebounds, 3.7 assists, 1.7 steals, and 1.2 blocks, in 15 games.

[35] On July 15, 2019, Smith signed with Blackwater Elite, returning to the team for a second stint ahead of the 2019 PBA Commissioner's Cup playoffs.

[38] Smith is the son of Cheryl Duckworth and has an older sister, Ashely and a younger brother, Divante.

His uncle, Steve Shelley, was a Fresno State wide receiver in 1988–89 who later signed with the San Diego Chargers in 1990.