Sophomore Rose Zhang leads the individual field after firing a bogey-free, 5-under 66 while junior Sadie Englemann also turned in a clean card with a 4-under 67. Freshman Megha Ganne was also in red numbers, finishing with a 1-under 70 in her first tournament at Stanford Golf Course.
With her opening round 66, Zhang is 21-under in her last four rounds at the Stanford Intercollegiate, after winning last year's tournament with a 16-under score of 197.
Stanford's 8-under 276 on Friday gave the Cardinal a three-stroke lead over San Jose State, a team that defeated its neighbor to the north twice last season at the Lampkin Invitational and Juli Inkster Intercollegiate.
The Spartan's 5-under 279 was led by Lopez-Ortega's 4-under 67 and a 3-under 68 by Antonia Malate, who was tied with Zhang for the individual lead until she made bogeys on her final two holes and had to settle for a 68. The Spartans also benefitted from an even par 71 by senior Kajsa Arwefjall.
Denver (-3), Northwestern (-2) and Virginia (-1) round out the top-five.
Zanusso (-4) and Clara Gestsdottir (-2) did the heavy lifting for Denver, as Martha Richards' team more than held their own against some of the top programs in the nation on Friday.
Neither seventh-ranked Texas, No. 11 USC or Georgia could find a hot hand on Friday and are tied for sixth at even par.
The Stanford Intercollegiate continues with second-round action on Saturday with the final 18 holes slated for Sunday.