2024-25 USC Men's Swimming & Diving Roster
Roster

Ronald Dalmacio
- Height:
- 6-0
 
- Class:
- Junior
 
- Hometown:
- Pasadena, Calif.
 
- High School:
- Harvard-Westlake
 
2024-25 SEASON:
2023-24 SEASON:
HIGH SCHOOL: Dalmacio has been breaking National Age Group Records since his time in the 10&Unders, swimming with Rose Bowl Aquatics and the Harvard Westlake School ... He helped bring Harvard-Westlake to a third-place team finish at the 2021 CIF Southern Section D1 Championships and won the 50 free (20.32) and 100 back (47.88) and was a member of the winning 200 medley relay (21.63 butterfly split) ... At the 2022 California/Nevada Speedo Sectionals, Dalmacio placed second in the 50 free and 200 back, and won bronze in the 100 back and 100 fly events.
CLUB: Rose Bowl Aquatics
PERSONAL: Born May 15, 2004 to parents John and Rhina ... lists winning 2019 Winter Juniors as a team by 1/2 a point as his most thrilling moment in sports ... majoring in Real Estate Development
DALMACIO'S PERSONAL RECORDS
	
		
- Did not compete at the 2025 Big Ten Championships.
- At the 2024 USC Swim Invite, Dalmacio was second in the 200y back (1:47.00) and swam on a pair of Trojan relays.
2023-24 SEASON:
- At the Pac-12 Championships, Dalmacio finished 30th in the 50y free (20.08), 22nd in the 100y backstroke (47.90), and 20th in the 200y backstroke (1:45.75 / 1:44.38)
HIGH SCHOOL: Dalmacio has been breaking National Age Group Records since his time in the 10&Unders, swimming with Rose Bowl Aquatics and the Harvard Westlake School ... He helped bring Harvard-Westlake to a third-place team finish at the 2021 CIF Southern Section D1 Championships and won the 50 free (20.32) and 100 back (47.88) and was a member of the winning 200 medley relay (21.63 butterfly split) ... At the 2022 California/Nevada Speedo Sectionals, Dalmacio placed second in the 50 free and 200 back, and won bronze in the 100 back and 100 fly events.
CLUB: Rose Bowl Aquatics
PERSONAL: Born May 15, 2004 to parents John and Rhina ... lists winning 2019 Winter Juniors as a team by 1/2 a point as his most thrilling moment in sports ... majoring in Real Estate Development
DALMACIO'S PERSONAL RECORDS
| Event | Time | 
| 50-yard free | 20.08 | 
| 100-yard free | 44.27 | 
| 100-yard fly | 48.15 | 
| 100-yard back | 47.80 | 
| 200-yard back | 1:44.13 | 
USC WBB Head Coach Lindsay Gottlieb | Preseason Media Availability 10/30
Thursday, October 30
USC HC Lincoln Riley | Thursday of Nebraska Week
Thursday, October 30
USC Women's Volleyball vs UCLA Post Game Press Conference (10/29/25)
Wednesday, October 29
Women's Volleyball - USC 3, UCLA 0: Highlights (10/29/25)
Wednesday, October 29

















































