Dallas acquired the draft rights to Roby on June 26, 2019, along with two future second round picks, from the Detroit Pistons in exchange for the draft rights to 37th overall pick Deividas Sirvydis.
Roby (6-8, 230) was an early-entry candidate to this year’s draft after spending three seasons at Nebraska. As a junior, he averaged 11.8 points, 6.9 rebounds, 1.9 assists and 1.3 steals while starting all 35 games. He shot .476 from the field and .702 from the free throw line during his career as a Cornhusker. Roby was twice named to the Tom Osborne Citizenship Team (2017, 2019) and earned Scholar-Athlete Honor Roll honors in 2017.