Throwing at USC's Trojan Invitational, Crouser launched the spear 78.94 meters (259-0) for his outdoor debut and fifth straight javelin win.
The women's 4x100 relay ran the second-fastest time in school history, Saturday.
Oregon throwers started the 2015 outdoor season at the Trojan Invitational, Friday, with four student-athletes in action.
Coming off the NCAA Indoor Championships last weekend, the Oregon track and field teams will transition to the outdoor season.
Eric Jenkins was named the USTFCCCA Division I Men's Indoor Track Athlete of the Year.
The Men of Oregon used teamwork to bring home the NCAA Indoor Track and Field Championship on Saturday at Arkansas.
Fueled by a 1-2-3 finish in the 3,000 meters, the Oregon men won the NCAA Indoor track and field title Saturday, and the women were second.
Prandini earned one of three Oregon NCAA titles on the day with a win in the long jump.
The Oregon men and women may not be favored to repeat as NCAA Indoor champions, but that remains their goal entering this weekend's meet.
Fans of all ages will be able meet members of the Ducks' track and field team and take part in a community mile race
The Ducks will have 13 entries on the men's side and 12 on the women's side, beating last year's total of 23.
The Oregon track and field team garnered five event wins at the Mountain Pacific Sports Federation Championships, Saturday.