The Highlanders lit it up from 3-point range. Nitoto made four and Martin and Borum three each, combining to sink all of their team's 10 3-pointers. Riverside went 10 of 21 (47.6 percent).
UC Riverside outrebounded UTSA 42-36 but committed 16 turnovers to only nine for the Roadrunners.
The Highlanders led by eight points early, then broke open a tight game in the second half, turning a 40-38 halftime edge into an 11-point lead at 53-42.