UIW started well dominating the opening ten minutes and in the tenth they had their goal as Sydney Solomon sent in a cross for Abigail Koenigs who headed home the opener calmly.
The Cardinals continued to dominate the opening half as UTSA struggled to create chances and in the 24th minute they doubled their league as another Solomon ball allowed Sarah Flores through one-on-one which saw her tuck the ball away to the keeper's right.
That seemed to spur UTSA in to action with a flurry of chances coming just after the goal with Laylla Da Cruz having her shot blocked before Anissa Munson put Kaauwela Neal's corner wide.
UTSA continued that momentum as Munson, Neal and Da Cruz all had chances to pull a goal back but Heather Kowalik was immense in the UIW goal keeping it 2-0 to the Cardinals at the break.
UTSA carried that momentum in to the second half and three minutes in they caught a break as a penalty allowed Taylor Wingerden to score a goal that put the Roadrunners back in with a shot.
The match evened out as that goal really stung UIW in to action while UTSA's play was too often undone by a foul that gave UIW more chances.
In the end an even second half saw the match end 2-1, a dampener for UTSA's new stadium opening but a positive sign for UIW who head in to their first season in NCAA Division I.