In her opening round match, Larocque outlasted Stanford's Lauren Barnikow, 7-6(4), 3-6, 6-1.
In other singles action, junior Lindsay Blau and senior Michelle dropped their opening round flight one singles matches. Blau was defeated by 20th-ranked Laura Granville of Stanford, 6-0, 6-0. Gough fell to Arizona State's Adria Engel, 6-2, 6-1.
In the flight three bracket, freshman Perrine Pernin recorded an first round victory over California's Catherine Lynch, 6-3, 7-5.
The Wildcats return to action Saturday, Jan. 13, for the second day of competition at the Pac-10 Indoor Championships.
Results Singles Flight One First Round #20 Laura Granville (Stanford) def. Lindsay Blau (UA) 6-0, 6-0 Adria Engel (Arizona State) def. Michelle Gough (UA) 6-2, 6-1 Flight Two First Round Maureen Diaz (USC) def. Sophie Regnier (UA) 2-6, 6-3, 7-5 Debbie Larocque (UA) def. Lauren Barnikow (Stanford) 7-6(4), 3-6, 6-1 Second Round Janice Nyland (Oregon) def. Larocque (UA) 7-5, 6-3 Flight Three First Round Mariko Fritz-Krockow (UCLA) def. Brooke Taylor (UA) 6-4, 7-6(2) Perrine Pernin (UA) def. Catherine Lynch (California) 6-3, 7-5