"It was a beautiful day, great weather," said Associate Athletic Director Vin Lananna. "It was a good mid-season test for some and a good season opener for others.
"All and all, I'm fairly pleased with the day and looking forward to a really exciting Saturday at the Oregon Relays."
At a brilliantly sunny day Historic Hayward Field before 6,718 in attendance, Kipyego and teammate Julia Lucas took charge over final 600 meters before Kipyego pulled ahead and finished in 4:08.59. Lucas was second in 4:10.75 with OTC Elite's Geena Gall third in 4:13.49.
"We have been training really hard for this race and the Stanford race," said Kipyego. "It was nice having a teammate out there in front with me to help me with my pace."
Hasay, a junior from Arroyo Grande, Calif., making her 2012 outdoor debut, was the top collegian and ran the third-fastest 1,500 meters in the NCAA this season in 4:15.00.
"I was glad to be in such a good race," said Hasay. "The quality of racers was extremely high and I knew it was going to be fast. I was happy with my time and finish especially with the way the race ended."
Arthur Delaney took the men's 200 meters in 20.95. The freshman from Gresham, Ore., accelerated past teammate Mike Berry coming off the turn and then had to hold off a charge from another teammate, Joeal Hotchkins, who was second in 21.26. Berry was third in 21.35.
"I got off to a great start and was happy all the way until the end, I could have finished better," said Delaney. "I lost my focus towards the end, I was more focused on beating Mike Berry.
"It was really nice to beat Mike; not only is it good for me, but it's good for everyone else on the team. It makes everyone push that much harder in practice."
Delaney's time was the ninth-fastest in school history.
The men's 1,500 meters produced a couple of lifetime bests from OTC Elite's Tyler Mulder and Oregon's Trevor Dunbar. Mulder won in 3:42.53, with the sophomore from Kodiak, Alaska second in 3:43.12. Ducks Travis Stanford, Colby Alexander and Chad Noelle also set personal bests in the 1,500. Stanford, a senior, was fifth in 3:46.97, while Alexander, a freshman, was sixth in 3:47.13 and Noelle, also a freshman, was seventh in 3:47.15.
Brian Schaudt led the Ducks in the field events. The senior from Philomath, Ore., posted a season best 51-0.25/15.55m in winning the triple jump. Teammate Trevor Ferguson also had a season's best jump. The freshman from Oregon City, Ore., was second at 48-11/14.91m.
"It was good, good conditions," said Schaudt. "I just executed what I practice.
"I've been getting the consistency to know that I have the ability to be jumping far."
Sophomore Phyllis Francis captured the women's 200 in 23.58, just edging teammate Lauryn Newson, who ran an 23.67. That was the eighth-fastest time in school history. Heptathlete Brianne Theisen set a personal best in a third-place finish in 23.99.
Parker Stinson wrapped up the successful day for the Ducks by winning the Bill McChesney, Jr., 5,000 meters in 14:02.93.
"It's my first time getting to do a victory lap so that was pretty cool," said the sophomore from Austin, Texas.
In other action Friday night, sophomore Laura Bobek set a seasonal best in the women's discus with a runner-up throw of 160-5/48.91m. In the men's discus, senior Randall Horn also had a 2012 best throw of 160-1/48.80m in a third place finish in the men's discus.
Junior Devin Gosberry was second in her heat of the women's 200 meters in an outdoor personal-best 24.68.
Junior Chris Stubbs made his Oregon debut in the men's 200 meters. The transfer from Lane Community College won his heat in 22.03.
"It went pretty good for the first time on the track as an official Oregon athlete," said the Eugene native and Willamette High School graduate. "It gave me a boost. It was a good workout so I'm to going to be too critical of myself."
Freshman Allie Woodward ran a personal-best 16:38.01 to finish second in the women's 5,000 meters.