STANFORD -- Rosco Allen scored five of his 17 points in overtime after banking in the tying basket with 10.5 seconds left in regulation, and Stanford took advantage of many missed free throws to beat No. 21 Utah 70-68 on Friday night in the Pac-12 opener for both schools.
The Utes (11-3, 0-1) got one final play with 7 seconds left and Lorenzo Bonam drove into traffic and traveled.
Utah - the best free-throw shooting team in the conference coming in at 73.2 percent - missed four free throws in the final 18.9 seconds of regulation.
Brandon Taylor missed two with 1.8 seconds left after two misses by Jordan Loveridge with 18.9 to play. Loveridge missed two more with 2:27 to go in overtime.
Allen then drove the baseline for a dunk in OT. His long jumper with 1:31 left in the extra period put Stanford ahead again.
Freshman Marcus Sheffield scored a season-high 17 points and Marcus Allen added 14 for Stanford (8-4, 1-0), which made 10 of its first 18 shots out of halftime to get back in the game.
Jakob Poeltl, Utah's leading scorer at 17.8 points and one of four starters averaging in double figures, scored 16 points but fouled out before OT. He converted a three-point play with 2:22 to go in regulation as Michael Humphrey fouled out, then Poeltl fouled out with 39.6 seconds left.
The Utes missed a third straight game reaching 100 points.
Bonam scored 15 points and Kyle Kuzma added 14 as the Utes had their four-game winning streak snapped to begin the tough Bay Area road trip.
Rosco Allen's 3-pointer with 9:59 to play pulled Stanford within 45-43 then Humphrey's free throws at 9:30 tied it. Marcus Allen hit a 3 with 5:53 left that again kept the Cardinal close at 52-50.
Stanford opened conference play with a hard-fought win at Maples Pavilion hours after the Cardinal's 45-16 Rose Bowl victory over Iowa was shown on the arena's main scoreboard before the game. The basketball game drew 4,065 fans, about what was expected on a day that focused on football here.
The Utes had held their previous four opponents to a shooting average of 30.8 percent, then limited Stanford to 39 percent.
The Cardinal missed eight straight shots during a 2-for-14 stretch midway through the first half with three turnovers, but Utah also went cold in a 3:09 scoring drought.
The Utes still used a 9-0 run during that time on the way to a 30-21 halftime lead. Stanford shot 7 for 29 in the opening 20 minutes, missing all but one of its eight 3-point tries.
Utah: The Utes are 1-4 in Pac-12 openers, winning last year. ... Utah and Stanford opened the conference slate as opponents for the first time and the Utes began on the road for the third time in five seasons since joining the Pac-12. ... The Utes were 5 of 19 from 3-point range, 1 for 6 in the first half after missing the first five.
Stanford: Sophomore F Reid Travis missed his fourth straight game with a stress reaction in his left leg. ... Stanford improved to 12-21 against ranked opponents under eighth-year coach Johnny Dawkins. ... The Cardinal's lone other appearance on New Year's Day was a 92-27 victory over Duquesne in Cleveland on Jan. 1, 1938, when Hank Luisetti had program game records with 50 points and 23 field goals. ... Stanford is 15-7 in conference openers at home since 1978-79.
Utah: At California on Sunday.
Stanford: Hosts Colorado on Sunday.