He averaged 21.3 points, 5.3 rebounds, 2.5 assists and 2.1 steals in 2012 to lead his team to the Division 2 state championship.

His senior year Thomas averaged 28.3 points and 9.7 rebounds, leading his team to the state semifinals and a 24–3 mark, shooting 50.4% percent from the field and 35.8% from beyond the arc.

Thomas ended his four-year career as a two-time first-team all-state pick with a 95–12 overall mark and over 2,000 points.

[4] Being highly sought after Thomas eventually chose Iowa State over Virginia, Minnesota, Boston College and Marquette.

Thomas grabbed a career-high eight rebounds and hit 5–6 shots to score 13 points against Alabama in the season opener.

[11] Due to the season-ending injury of Naz Long, Thomas moved back into the starting lineup.

[13] In his first professional game of his career, Thomas recorded 21 points in 4-for-5 shooting from three-point line as he helped Obradoiro win against Zaragoza.

[15] He had an effective field goal percentage of 99 percent on catch-and-shoot attempts when unguarded, picking up the nickname Mr.

[18] On October 26, 2019, Thomas made his NBA debut, scoring six points and grabbing three rebounds, in the Raptors 108–84 win over the Chicago Bulls.

[25][26] In the Raptors’ sixth game returning from the suspension of the season due to the COVID-19 pandemic on August 10, Thomas scored a career-high 22 points, hitting 4 three-pointers, in a 114–106 win over the Milwaukee Bucks in the Orlando bubble.

[27] On March 25, 2021, the Raptors traded Thomas to the Utah Jazz for a future second-round draft pick.

[33] On January 31, 2023, Thomas made his return to Europe for Panathinaikos of the Greek Basket League and the EuroLeague, signing a contract through 2024, with the second season being a team option.

Thomas appeared in only one game in domestic competition due to the Greek league's restrictions on foreign players.