BYU's women's tennis team inaugurated its 1991 season with a 6-1 upset victory over 11th-ranked San Diego Thursday evening at the BYU indoor courts.

After piling up a 4-1 lead in singles, the 21st-ranked Cougars needed just one more match to beat SDU, and they got it from Evica Koljanin and Monika Kobilikova who swept Tonya Fuller and Julie McKeon 7-6 (7-3), 6-2 at No. 1 doubles.