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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
401 Reed Mock 46.81 10 BB Min A: 43.09 (+3.72s | 7.9%) South Orange County Aquatics 06/13/2024 2024 CA SCS NOVA June Age Group Invite
402 Lucas Jiang 46.84 9 BB Min A: 43.09 (+3.75s | 8.0%) Santa Clara Swim Club 05/23/2025 Zone 1 South May Firecracker 500
403 William Cao 46.86 9 BB Min A: 43.09 (+3.77s | 8.0%) Great Lakes Sailfish Swimming 07/24/2025 2025 LE Age Group And Senior LC Championships
404 Matthew Ko 46.86 10 BB Min A: 43.09 (+3.77s | 8.0%) Aspire Aquatics of Colorado 06/06/2025 2025 CO NJ Summer Solstice Invitational
405 Calder Brelsford-La Badie 46.86 9 BB Min A: 43.09 (+3.77s | 8.0%) Bainbridge Island Swim Club 05/02/2025 2025 PN BC May Flowers
406 Jasper Corrigan 46.86 9 BB Min A: 43.09 (+3.77s | 8.0%) Occoquan Swimming 08/06/2025 2025 Summer Elite Showcase
407 Nolan Meinen 46.88 10 BB Min A: 43.09 (+3.79s | 8.1%) Nitro Swimming 06/27/2025 2025 ST HPAC Long Course STX Championship
408 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
409 Bennett Kohlmeyer 46.90 10 BB Min A: 43.09 (+3.81s | 8.1%) Life Time Colorado Swim Club 04/26/2025 2025 CO FST Spring LC Fever
410 Felix Hagen 46.91 10 BB Min A: 43.09 (+3.82s | 8.1%) Hurricanes Swim Team 07/18/2025 2025 MN MTKA Minnesota Regional Championship
411 Ilan Rattner 46.93 9 BB Min A: 43.09 (+3.84s | 8.2%) Sunnyvale Swim Club 06/06/2025 2025 DACA LC CBA+ Meet
412 Isaac Burla 46.93 10 BB Min A: 43.09 (+3.84s | 8.2%) South East Metro Sharks 07/18/2025 2025 MN STRM Minnesota Regional Championship
413 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
414 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
415 Finnegan Halvorson 47.01 10 BB Min A: 43.09 (+3.92s | 8.3%) Foxjets Swim Team 05/03/2025 2025 MN RSC Pentathlon
416 Ethan Hartley 47.01 10 BB Min A: 43.09 (+3.92s | 8.3%) Quest Swimming 06/27/2024 NOVA Firecracker Classic
417 Marcus Pass 47.01 9 BB Min A: 43.09 (+3.92s | 8.3%) Sioux Falls Swim Team 05/09/2025 2025 SD SFST Ready For Long Course
418 Jay Kowren 47.02 10 BB Min A: 43.09 (+3.93s | 8.4%) Bainbridge Island Swim Club 07/24/2025 2025 PN LC 12 U Championships
419 Tripp Liberman 47.04 10 BB Min A: 43.09 (+3.95s | 8.4%) Rocky Mountain Rapids 04/26/2025 2025 CO COSA Spring LC Kick Off
420 Charlie Wheeler 47.06 10 BB Min A: 43.09 (+3.97s | 8.4%) Longmont Swim Club 07/25/2025 2025 CO CSI Age Group Championships
421 Mason Stout 47.06 10 BB Min A: 43.09 (+3.97s | 8.4%) Foxjets Swim Team 06/20/2025 2025 MN MAN Red White Blue Invite
422 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
423 Ludwik Pawelski 47.06 9 BB Min A: 43.09 (+3.97s | 8.4%) Sparks Piranhas Swim Team 06/20/2025 Reno Aquatic Club Gamble
424 Yusuf Awad 47.07 8 BB Min A: 43.09 (+3.98s | 8.5%) Gator Swim Club 06/20/2025 2025 FAST Independence Invitational
425 Aadit Ranade 47.08 9 BB Min A: 43.09 (+3.99s | 8.5%) Nitro Swimming 06/27/2025 2025 ST HPAC Long Course STX Championship
426 Cayden Lin 47.09 10 BB Min A: 43.09 (+4.00s | 8.5%) Rosemead Rapids 07/24/2025 2025 CA SCS RAA Summer A G Champs
427 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
428 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
429 Saien Wu 47.12 10 BB Min A: 43.09 (+4.03s | 8.6%) Bellevue Club Swim Team 07/18/2025 2025 PN Chinook Age Group Seattle Open
430 Emerson Bohan 47.14 10 BB Min A: 43.09 (+4.05s | 8.6%) Tsunamis Swim Team 01/16/2026 January Central Park Series
431 David Grant 47.14 10 BB Min A: 43.09 (+4.05s | 8.6%) Fort Collins Area Swim Team 05/16/2025 2025 CO NJ Ken Kelley Invite
432 Thomas Sedano 47.16 10 BB Min A: 43.09 (+4.07s | 8.6%) Monterey Bay Swim Club 05/18/2024 San Benito Aquatics C B A+
433 Briggs North 47.16 10 BB Min A: 43.09 (+4.07s | 8.6%) Aberdeen Swim Club 06/13/2025 2025 SD Aberdeen Summer High Point Swim Meet
434 Emilio Retana 47.17 10 BB Min A: 43.09 (+4.08s | 8.6%) El Paso Aqua Posse 07/19/2024 2024 BD LCM Border Champs
435 Henri Simard 47.17 9 BB Min A: 43.09 (+4.08s | 8.6%) Swim Florida 06/21/2025 2025 T2 June Saturday Showcase
436 Qifan Gong 47.19 9 BB Min A: 43.09 (+4.10s | 8.7%) Bellevue Club Swim Team 07/24/2025 2025 PN LC 12 U Championships
437 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
438 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
439 Benjamin Hankinson 47.27 9 BB Min A: 43.09 (+4.18s | 8.8%) Jupiter Dragons Swim Team 06/07/2025 2025 TCA Aaron Vaughn Memorial
440 Cedrick Lo 47.28 10 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
441 Beau Jakubowski 47.28 9 BB Min A: 43.09 (+4.19s | 8.9%) Aces Swim Club 07/25/2025 2025 CO CSI Age Group Championships
442 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
443 Zuriel Cariazo 47.29 10 BB Min A: 43.09 (+4.20s | 8.9%) Montrose Marlins Swim Club 07/25/2025 2025 CO CSI Age Group Championships
444 Ian Susanto 47.29 9 BB Min A: 43.09 (+4.20s | 8.9%) Legacy Aquatics 11/01/2025 Oregon City Fall Open 2025
445 Artemii Ilchenko 47.30 9 BB Min A: 43.09 (+4.21s | 8.9%) San Antonio Wave 05/16/2025 2025 ST AAAA NS Salute To The Troops
446 Brooks Switaj 47.32 9 BB Min A: 43.09 (+4.23s | 8.9%) Bellevue Club Swim Team 05/02/2025 2025 PN BC May Flowers
447 Arnesh Saraswat 47.34 10 BB Min A: 43.09 (+4.25s | 9.0%) SwimStrongsville 07/12/2025 LSSC Avon Classic
448 Kensington Hull 47.34 10 BB Min A: 43.09 (+4.25s | 9.0%) Heartland Swim Assoc 07/24/2025 2025 SI LC AG CHAMPS
449 Levi Bynum 47.37 9 BB Min A: 43.09 (+4.28s | 9.0%) Alamo Area Aquatic Association 07/25/2025 2025 ST AAAA NE LC End Of Season Splash
450 Leon Escarcega Hernandez 47.38 10 BB Min A: 43.09 (+4.29s | 9.1%) Halcones Marinos Capn 05/02/2025 2025 ST 22nd Annual Cinco De Mayo

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.