As a senior, Clark was the 2012–13 Ohio Valley Conference Co-Player of the Year with Murray State's Isaiah Canaan.

He was third in the nation in three-point field goal shooting percentage and led the Bruins to the conference championship in the school's first year as an OVC member.

In July 2013, Clark signed a two-year contract with the Utah Jazz after his performance at the Las Vegas Summer League impressed numerous teams.

[2] Clark's Belmont player biography describes him in high school as "[a] dynamic, multi-dimensional guard who could make an instant impact on both ends of the floor.

"[2] When Clark enrolled at Belmont University as a freshman in 2009–10, the school was still in the Atlantic Sun Conference (A-Sun).

In Belmont's last season in the Atlantic Sun Conference, Clark averaged 12.7 points, 2.6 rebounds, 2.4 assists and 1.0 steals per game.

For the year, Clark averaged 18.2 points, 3.3 rebounds, 2.4 assists, and 1.6 steals;[4] he also shot 45.9% from beyond the arc, which was good enough to be ranked third nationally.

[9] He subsequently won the Most Valuable Player of the Las Vegas Summer League championship game as he led the Warriors with 33 points, helping them defeat the Phoenix Suns 91–77.

[10] On July 29, Clark signed a two-year contract with the Utah Jazz after his performance in Las Vegas impressed numerous teams.

[22] Clark topped that mark on December 17, scoring 23 points in a 135–90 victory over the Portland Trail Blazers.

[23] On March 11, 2017, Clark set a new career high with 36 points in a 107–85 loss to the San Antonio Spurs.

[32] On February 12, 2022, Clark signed with the Sydney Kings of the Australian National Basketball League (NBL) for the rest of the 2021–22 season.