Angeles de los Rios and Anna Wichert each went 5-1 in the opening weekend of the season.
The UTA men won a school-record 18 matches and claimed the SBC crown in '16, while the women won 17 and reached the SBC semi's.
UTA takes on South Alabama on Saturday in a rematch of the 2015 Sun Belt Championship match.
UTA swept through the SBC pod hosted by Texas State with a pair of wins.
No. 58 UT Arlington celebrated Senior Day with a 6-1 victory over crosstown rival SMU.