In the first round, Larocque outlasted Texas-El Paso's Elizabeth Stone, 6-4, 5-7, 6-0, and won in straight sets over Northwestern's Shannon Duffy, 6-4, 6-3, in her second round match.
Larocque will face Boise State's Renate Stoop in the third round that is set to begin Sunday at 9 a.m. PDT.
With a victory, Larocque will advance to the qualifying draw that will begin Tuesday.
In doubles action, Larocque and teammate, freshman Sophie Regnier, earned a first round bye and will face Texas-El Paso's duo of Jana Perkova and Ana Brnas in the second round. The match is slated to begin Sunday at noon PDT.
Prequalifying Draw Singles First Round 1. Debbie Larocque (UA) def. Elizabeth Stone (UTEP) 6-4, 5-7, 6-0
Second Round 1. Larocque (UA) def. Shannon Duffy (Northwestern) 6-4, 6-3
Doubles First Round 1. Larocque/Sophie Regnier (UA) Bye