Guards Chasson Randle and Aaron Bright sparked a second-half rally that helped energize Stanford. They said it all started on defense.
Randle scored 24 points, Bright added 16, and Stanford beat Cal State Fullerton 81-68 in its home opener Monday night.
Dwight Powell had 14 points and 12 rebounds for the Cardinal (2-0), which opened the season with a victory over USF on Friday.
"We got after them on the defensive end," Randle said. "The guys created turnovers, and we turned those into points."
The Titans committed 25 turnovers to Stanford's 15. The Cardinal was 21 of 27 from the foul line (.778). It also helped that Stanford shot just over 55 percent from the field in the second half.
"We were more aggressive offensively and defensively," Bright said. "We got to the line and took advantage of that."
D.J. Seeley and Sammy Yeager scored 16 points each for the Titans.
Jared Brandon scored 13 points and Kwame Vaughn 11. Yeager had nine rebounds.
Brandon's jumper just over four minutes into the second half put the Titans ahead 43-39. Stanford came back to tie the score at 48 on a Powell basket with 13:44 remaining. Bright scored the next five points, all on free throws, to put the Cardinal ahead to stay.
Freshman Christian Sanders and Andy Brown combined for 12 points during a run that gave Stanford a double-digit lead with nine minutes remaining. The Cardinal lead grew to 24 points.
"That's where I thought the spark came from," Stanford coach Johnny Dawkins said. "They gave us energy and made plays."
Gabriel Harris hit a layup with seven seconds left in the half to lift Stanford into a 31-31 tie at intermission.
Oregon 80, Portland St. 69: Freshman guard Dominic Artis of Oakland scored 16 points to lead host Oregon over Portland State. Artis, who played three seasons at Salesian High-Richmond, was 6 for 13 from the field and made four of Oregon's nine 3-pointers.
Indiana 87, North Dakota St. 61: Cody Zeller scored 22 points to lead No. 1 Indiana (2-0) past visiting North Dakota State (1-1).
AP poll: UConn (1-0) moved into the Top 25 at No. 23, on the strength of its 66-62 win over Michigan State in Friday's Armed Services Classic. Led by Indiana and Louisville, the first seven teams in the initial regular-season poll were the same as the preseason Top 25.
AP poll: Baylor is again the unanimous No. 1 choice in The Associated Press women's poll. The Lady Bears received all the first-place votes after routing Lamar.
The top five teams remained unchanged with UConn, Duke, Stanford and Maryland following Baylor.
Stanford: Preseason All-American Chiney Ogwumike won Pac-12 player of the week honors. Ogwumike averaged 22.5 points and 12.0 rebounds in Stanford's victories over Fresno State and Santa Clara.