USA Boys 10 & under - 50 M Back

These rankings show the swimmers' placement within the United States.
They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.

Swimmer Rankings

Ranking Name Time Age Standard to Next Standard Team Date Meet
501 David Rivera 46.77 9 BB Min A: 43.09 (+3.68s | 7.9%) Almaden Riptide 05/23/2025 Zone 1 South May Firecracker 500
502 Peter Brandt 46.78 10 BB Min A: 43.09 (+3.69s | 7.9%) Issaquah Swim Team 07/18/2025 2025 PN Chinook Age Group Seattle Open
503 Reed Mock 46.81 8 BB Min A: 43.09 (+3.72s | 7.9%) South Orange County Aquatics 06/13/2024 2024 CA SCS NOVA June Age Group Invite
504 Daniel Reschke 46.84 9 BB Min A: 43.09 (+3.75s | 8.0%) Alto Swim Club 04/19/2025 Alto Spring Jam Meet
505 Lucas Jiang 46.84 8 BB Min A: 43.09 (+3.75s | 8.0%) Santa Clara Swim Club 05/23/2025 Zone 1 South May Firecracker 500
506 William Cao 46.86 8 BB Min A: 43.09 (+3.77s | 8.0%) Great Lakes Sailfish Swimming 07/24/2025 2025 LE Age Group And Senior LC Championships
507 Matthew Ko 46.86 9 BB Min A: 43.09 (+3.77s | 8.0%) Aspire Aquatics of Colorado 06/06/2025 2025 CO NJ Summer Solstice Invitational
508 Jasper Corrigan 46.86 8 BB Min A: 43.09 (+3.77s | 8.0%) Occoquan Swimming 08/06/2025 2025 Summer Elite Showcase
509 Calder Brelsford-La Badie 46.86 8 BB Min A: 43.09 (+3.77s | 8.0%) Bainbridge Island Swim Club 05/02/2025 2025 PN BC May Flowers
510 Nolan Meinen 46.88 9 BB Min A: 43.09 (+3.79s | 8.1%) Nitro Swimming 06/27/2025 2025 ST HPAC Long Course STX Championship
511 David Renko 46.88 9 BB Min A: 43.09 (+3.79s | 8.1%) Wasatch Front Fish Market 06/27/2025 WFFM Red White And Black 2025
512 Bennett Kohlmeyer 46.90 9 BB Min A: 43.09 (+3.81s | 8.1%) Life Time Colorado Swim Club 04/26/2025 2025 CO FST Spring LC Fever
513 Felix Hagen 46.91 9 BB Min A: 43.09 (+3.82s | 8.1%) Hurricanes Swim Team 07/18/2025 2025 MN MTKA Minnesota Regional Championship
514 Ilan Rattner 46.93 8 BB Min A: 43.09 (+3.84s | 8.2%) Sunnyvale Swim Club 06/06/2025 2025 DACA LC CBA+ Meet
515 Isaac Burla 46.93 9 BB Min A: 43.09 (+3.84s | 8.2%) South East Metro Sharks 07/18/2025 2025 MN STRM Minnesota Regional Championship
516 Sammuel Zhou 46.93 10 BB Min A: 43.09 (+3.84s | 8.2%) Alto Swim Club 06/27/2025 Alto Summer Swelter
517 Emerson Vivion 46.98 10 BB Min A: 43.09 (+3.89s | 8.3%) Olympic Cascade Aquatics 07/11/2025 2025 PN OCA July Jamboree Invitational
518 Hudson Zillmer 47.00 10 BB Min A: 43.09 (+3.91s | 8.3%) North Suburban Aquatic Club 07/18/2025 2025 MN STRM Minnesota Regional Championship
519 Cameron Ecklof 47.00 9 BB Min A: 43.09 (+3.91s | 8.3%) Sporting Jax Aquatic Club 07/25/2025 2025 Area 1 LCM Championships
520 Finnegan Halvorson 47.01 9 BB Min A: 43.09 (+3.92s | 8.3%) Foxjets Swim Team 05/03/2025 2025 MN RSC Pentathlon
521 Ethan Hartley 47.01 8 BB Min A: 43.09 (+3.92s | 8.3%) Quest Swimming 06/27/2024 NOVA Firecracker Classic
522 Marcus Pass 47.01 8 BB Min A: 43.09 (+3.92s | 8.3%) Sioux Falls Swim Team 05/09/2025 2025 SD SFST Ready For Long Course
523 Jay Kowren 47.02 9 BB Min A: 43.09 (+3.93s | 8.4%) Bainbridge Island Swim Club 07/24/2025 2025 PN LC 12 U Championships
524 Tripp Liberman 47.04 9 BB Min A: 43.09 (+3.95s | 8.4%) Rocky Mountain Rapids 04/26/2025 2025 CO COSA Spring LC Kick Off
525 Charlie Wheeler 47.06 9 BB Min A: 43.09 (+3.97s | 8.4%) Longmont Swim Club 07/25/2025 2025 CO CSI Age Group Championships
526 Mason Stout 47.06 9 BB Min A: 43.09 (+3.97s | 8.4%) Foxjets Swim Team 06/20/2025 2025 MN MAN Red White Blue Invite
527 Andrew Xie 47.06 10 BB Min A: 43.09 (+3.97s | 8.4%) Tualatin Hills Swim Club 06/26/2025 2025 Howard Jones Open
528 Ludwik Pawelski 47.06 8 BB Min A: 43.09 (+3.97s | 8.4%) Sparks Piranhas Swim Team 06/20/2025 Reno Aquatic Club Gamble
529 Yusuf Awad 47.07 7 BB Min A: 43.09 (+3.98s | 8.5%) Gator Swim Club 06/20/2025 2025 FAST Independence Invitational
530 Aadit Ranade 47.08 8 BB Min A: 43.09 (+3.99s | 8.5%) Nitro Swimming 06/27/2025 2025 ST HPAC Long Course STX Championship
531 Jase Dignan 47.08 10 B: 44.49 (+2.59s | 5.5%) SwimStrongsville 06/27/2025 2025 55th FREEDLANDER MEET
532 Cayden Lin 47.09 9 BB Min A: 43.09 (+4.00s | 8.5%) Rosemead Rapids 07/24/2025 2025 CA SCS RAA Summer A G Champs
533 Nathan Selinger 47.09 10 BB Min A: 43.09 (+4.00s | 8.5%) Minnetonka Swim Club 07/23/2025 2025 MN NSAC 10 U LC State Championship
534 Saien Wu 47.12 9 BB Min A: 43.09 (+4.03s | 8.6%) Bellevue Club Swim Team 07/18/2025 2025 PN Chinook Age Group Seattle Open
535 Joseph Morin 47.12 10 BB Min A: 43.09 (+4.03s | 8.6%) Alamo Area Aquatic Association 07/25/2025 2025 ST AAAA NE LC End Of Season Splash
536 Emerson Bohan 47.14 10 BB Min A: 43.09 (+4.05s | 8.6%) Tsunamis Swim Team 01/16/2026 January Central Park Series
537 Ethan Zhu 47.14 10 BB Min A: 43.09 (+4.05s | 8.6%) Southwest Stars Swim Club 06/12/2025 2025 RAFC Summer Solstice
538 David Grant 47.14 9 BB Min A: 43.09 (+4.05s | 8.6%) Fort Collins Area Swim Team 05/16/2025 2025 CO NJ Ken Kelley Invite
539 Thomas Sedano 47.16 8 BB Min A: 43.09 (+4.07s | 8.6%) Monterey Bay Swim Club 05/18/2024 San Benito Aquatics C B A+
540 Briggs North 47.16 9 BB Min A: 43.09 (+4.07s | 8.6%) Aberdeen Swim Club 06/13/2025 2025 SD Aberdeen Summer High Point Swim Meet
541 Emilio Retana 47.17 8 BB Min A: 43.09 (+4.08s | 8.6%) El Paso Aqua Posse 07/19/2024 2024 BD LCM Border Champs
542 Henri Simard 47.17 9 BB Min A: 43.09 (+4.08s | 8.6%) Swim Florida 06/21/2025 2025 T2 June Saturday Showcase
543 Qifan Gong 47.19 8 BB Min A: 43.09 (+4.10s | 8.7%) Bellevue Club Swim Team 07/24/2025 2025 PN LC 12 U Championships
544 Christopher Williams 47.23 10 BB Min A: 43.09 (+4.14s | 8.8%) Hilltop Aquatic Swim Team 07/17/2025 2025 UTAGS LC Championships
545 Caden Shane 47.25 9 BB Min A: 43.09 (+4.16s | 8.8%) Sarasota Tsunami Swim Team 07/10/2025 2025 FL Summer Age Group Championships
546 Benjamin Hankinson 47.27 8 BB Min A: 43.09 (+4.18s | 8.8%) Jupiter Dragons Swim Team 06/07/2025 2025 TCA Aaron Vaughn Memorial
547 Cedrick Lo 47.28 9 BB Min A: 43.09 (+4.19s | 8.9%) Sandpipers of Nevada 07/16/2025 Renee And Jim Patterson Meet 2025
25 Back
1:00.86
1:00.86
50 Back
-13.-58
47.28
50 Back
47.28
548 Beau Jakubowski 47.28 8 BB Min A: 43.09 (+4.19s | 8.9%) Aces Swim Club 07/25/2025 2025 CO CSI Age Group Championships
549 Leo Ferrante 47.29 10 BB Min A: 43.09 (+4.20s | 8.9%) Palo Alto Stanford Aquatics 05/24/2025 2025 Mike Snyder Memorial
550 Ian Susanto 47.29 9 BB Min A: 43.09 (+4.20s | 8.9%) Legacy Aquatics 11/01/2025 Oregon City Fall Open 2025

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.