2025 World Aquatics Championships Homepage
The Big West will be well represented on the global stage across seven different countries at the 2025 World Aquatics Championships, set for July 11–August 3 in Singapore. A total of 14 current or former coaches and student-athletes will proudly compete for their respective national teams. In total, the conference boasts 9 representatives in women's water polo, three in men's water polo, and one in swimming & diving.
Tara Prentice (UC Irvine '22) makes the 2022 Big West Player of the Year's third appearance for the United States on the international stage. Rachel Fattal (Long Beach State Assistant Coach 2023-24) will also represent Team USA and join Prentice in the pool this year.
Nine other women's water polo conference representees will compete in the 2025 World Aquatics Championships across the likes of five countries. Hawai'i boasts the largest contingent of current student athletes with four Rainbow Wahine ready for competition with Gabrielle Doyle (New Zealand), Camille Radosavljevic (France), Agatha Weston (New Zealand), and 2025 Big West Freshman of the Year Éma Vernoux. Joining the duo in New Zealand will be UH alumni Elizabeth "Libby" Gault (2018-23) and Bridget Layburn (2019-23). Overall, the Rainbow Wahine have a Big West best six representatives.
Dan Klatt, UC Irvine's Director of Water Polo will serve as an assistant coach for the women's water polo USA Team. The Anteaters earned the No. 3 seed in last year's Championship after accumulating a 5-2 record in conference action. Klatt also coached Prentice during the utility's time at UCI.
On the men's side, the head coaching duo of Long Beach State's Gavin Arroyo and UC San Diego's Matt Ustaszewski will act as assistant coaches for the United States in the World Championships. Arroyo was named Big West Coach of the Year in 2024, and this will be Ustaszewski's fifth stint as an assistant in the World Championships. The coaching tandem was also on the bench when the United States took home the Bronze medal at the 2024 Olympics in Paris.
Current LBSU student athlete Jason O'Donnell will round out the representatives on the men's side, playing for Canada in the upcoming Championship.
Vili Sivec is slated to represent Cal State Bakersfield swimming & diving while competing for Croatia. Two years ago on the national stage, Sivec reset the swimmer's own CSUB record time of 52.22 in the 100-meter Butterfly, earning a bronze medal.
The Big West at 2025 FINA World Championships
| Name |
Sport |
School |
Country |
| Gabrielle Doyle |
Women's water polo |
Hawai'i (2025-) |
New Zealand |
| Elizabeth "Libby" Gault |
Women's water polo |
Hawai'i (2018-23) |
New Zealand |
| Daniel Klatt |
Women's water polo |
UC Irvine/Director of Water Polo (2023-) |
United States |
| Bridget Layburn |
Women's water polo |
Hawai'i (2019-23) |
New Zealand |
| Tara Prentice |
Women's water polo |
UC Irvine (2018-22) |
United States |
| Camille Radosavljevic |
Women's water polo |
Hawai'i (2023-) |
France |
| Isabel Riley |
Women's water polo |
Long Beach State (2018-20) |
Argentina |
| Éma Vernoux |
Women's water polo |
Hawai'i (2025-) |
France |
| Agatha Weston |
Women's water polo |
Hawai'i (2024-) |
New Zealand |
| Gavin Arroyo |
Men's water polo |
Long Beach State/Head Coach (2006-) |
United States |
| Jason O'Donnell |
Men's water polo |
Long Beach State (2022-) |
Canada |
| Matt Ustaszewski |
Men's water polo |
UC San Diego/Head Coach (2022-) |
United States |
| Karol Ostrowski |
Men's swimming & diving |
Hawai'i (2023-) |
Poland |
| Vili Sivec |
Men's swimming & diving |
Cal State Bakersfield (2022-) |
Croatia |