IRVINE, CALIFORNIA - AUGUST 12: Blake Tierney of Team Canada competes in the Men's 100m Backstroke on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Reina Liu of Team Canada competes in the Women's 100m Backstroke Final B on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Katharine Berkoff of Team United States reacts after winning the Women's 100m Backstroke Final on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Katharine Berkoff of Team United States reacts after winning the Women's 100m Backstroke Final on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Loic Courville-Fortin of Team Canada competes in the Men's 100m Backstroke Final B on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Blake Tierney of Team Canada reacts after finishing first place in the Men's 100m Backstroke on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Blake Tierney of Team Canada reacts after finishing first place in the Men's 100m Backstroke on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)

IRVINE, CALIFORNIA - AUGUST 12: Brittany Catelluzzo of Team Australia reacts after finishing first place in the Women's 200m Butterfly Final on Day 1 of the Pan Pacific Swimming Championships at William Woollett, Jr. Aquatics Center on August 12, 2026 in Irvine, California. (Photo by Sean M. Haffey/Getty Images)