Hansson, Scott, Vissering and 200y medley relays all victorious.
Trojans set for four days of swimming, Wednesday through Saturday.
Trojans take on Sun Devils 2 p.m. Friday, face Wildcats 12 p.m. Saturday.
Women's squad hosting Florida Gulf Coast, Men take on Cal State Bakersfield.
Trojan men head to Cal Poly and UC Santa Barbara, women swim at Washington State.
THIS SEASON: Ridge Altman, a 2017 redshirt senior, returns after a year away from the team, a skilled breaststroker and 200y IMer looking to return to the form that made him a 2015 NCAA Championships participant and Pac-12 finalist.
2016: Altman redshirted in 2016, training for the 2016 U.S. Olympic Trials. He finished 67th in the 200m breast and 75th in the 100m breast.
2015: Altman, as a junior, competed at the NCAA Championships for the first time in 2015, taking 27th in the 200y breast (1:54.93) with a PR, 39th in the 100y breast (53.83) and 53rd in the 200y IM (1:52.95) ... Altman reached his first conference final at the 2015 Pac-12 Championships, finishing fifth in the 200y breast (1:55.04). He was also 14th in the 100y breast (53.74) and 19th in the 200y IM (1:48.23). His 200y IM time and his 53.59 in 100y breast prelims were both PRs.
2014: Altman competed in three events at the 2014 Pac-12s as a sophomore, finishing 12th in the 200y breast (1:57.31), 16th in the 100y breast (54.87) and 24th in the 200y IM (1:49.46). His 54.54 in the 100y breast prelims was a personal best.
2013: Altman provided depth in the breast and medley events as a 2013 freshman, posting an NCAA `B' cut in the 200y breast (1:58.95) at the U.S. Winter Nationals with a `B' finalist finish. He competed in three exhibition heats at the Pac-12 Championships.
HIGH SCHOOL: Altman, who was a co-captain at Seacrest Country Day in Naples, Fla., finished second in the 100y fly in the 2010 Division IA state championships and third in the 100y breast as a senior and earned 2010 Naples News Boys Swimmer of the Year honors. Originally from Maui, Altman also won FHSAA 1A Region 3 titles in the 100y fly and 100y breast.
CLUB: Lahaina Swim Club.
PERSONAL: He was born on May 4, 1993, and he is an economics major.
ALTMAN'S PERSONAL RECORDS: