[1] Motley blossomed into an All-American player as a junior for Baylor, leading the Bears to their first number one ranking as a program during the 2016–17 season.

[3] At the close of his junior season, Motley declared his eligibility for the 2017 NBA draft but did not hire an agent, leaving open the option to return to college.

After recovering from a previous injury he had, Motley would make his official NBA debut on December 14, 2017, recording 4 points in two minutes under a 112–97 loss to the defending champion Golden State Warriors.

[11] On February 10, 2021, Motley signed with the Incheon ET Land Elephants of the Korean Basketball League (KBL),[12][13] where he averaged 20.7 points, 8.9 rebounds, 3.3 assists and 1.4 blocks.

[15] On June 20, 2022, Motley signed with Fenerbahçe Beko of the Turkish Basketball Super League (BSL), his first EuroLeague club.