Jarnell Stokes, Kenny Hall and Trae Golden scored 14 points apiece as the Volunteers opened the Puerto Rico Tipoff with a 75-68 win over UNC-Asheville.
Stokes finished with a double-double also pulling down 11 rebounds before fouling out.
Tennessee (2-0) went on a 19-8 run to halftime and never looked back.
Jeremy Atkinson led UNC Asheville (1-2), and all scorers, with 18 points.
The Volunteers stretched their lead to as many 13 points in the second half, but could never pull away for the first round blowout.
The Vols advance to play Oklahoma State in round two.