Daulton Jefferies pitched six shutout innings and Cal had a five-run fifth inning en route to a 7-0 win over Texas at Evans Diamond on Friday night.
Derek Campbell's leadoff double was Cal's only hit in the fifth. The Bears took advantage of three Longhorns errors, a walk and a hit batsman in both teams' season opener.
Zach Hoffpauir gave Stanford a 3-1 lead on a three-run homer in the second inning, but Rice scored nine unanswered runs to win 10-3 in front of 1,298 fans at Sunken Diamond.
Saint Mary's Anthony Villa had two hits and one run in the Gaels' 4-2 loss at New Mexico State.
Andre Mercurio had a two-run double in a three-run fourth, keying San Jose State's 6-4 home win over San Diego State.
Santa Clara scored an unearned run in the first inning in a 4-1 loss to Nevada. The host Broncos had just four hits.
No. 17 Stanford (8-0) opened the Stanford Nike Invitational with wins over Cal Poly (5-2) and Bradley (7-3). The Cardinal scored all seven runs in the second inning against Bradley.
Enterprising, ridden by Hall of Fame jockey Gary Stevens, is the 5-to-2 favorite for Saturday's $200,000 El Camino Real Derby at Golden Gate Fields. Northern California's official Kentucky Derby prep is a 1 1/8-mile test and is expected to go off between 4:30-5 p.m.