USA Boys 10 & under - 50 Y 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 5501 | Tatum Leer | 47.52 | 10 | B Min | BB: 42.89 (+4.63s | 9.7%) | Nitro Swimming | 09/19/2025 | 2025 ST AQTX Round Rock Unclassified | |
| 5502 | Beau Markway | 47.52 | 10 | B Min | BB: 42.89 (+4.63s | 9.7%) | Memphis Thunder Aquatic Club | 11/21/2025 | 2025 Tiger Turkey Tumble | |
| 5503 | Finn Kirst | 47.52 | 9 | B Min | BB: 42.89 (+4.63s | 9.7%) | Wave Aquatics | 06/19/2026 | 2026 PN SRST Summer Invitational Approved | |
| 5504 | Samuel Leineweber | 47.52 | 9 | B Min | BB: 42.89 (+4.63s | 9.7%) | Apex | 03/14/2026 | 2026 John Haring Memorial BC Showdown | |
| 5505 | Daniel Gladkyi | 47.52 | 8 | B Min | BB: 42.89 (+4.63s | 9.7%) | Life Time Mid Atlantic Swim Te | 10/25/2025 | 2025 PV MAKO PUMPKIN CLASSIC | |
| 5506 | Solomon Whittington | 47.52 | 9 | B Min | BB: 42.89 (+4.63s | 9.7%) | DC Dept Of Parks and Recreatio | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 5507 | Paul Yastreb | 47.52 | 8 | B Min | BB: 42.89 (+4.63s | 9.7%) | Life Time Mid Atlantic Swim Te | 02/07/2026 | 2026 MAKO QUALIFIER | |
| 5508 | Benjamin Levin | 47.52 | 10 | B Min | BB: 42.89 (+4.63s | 9.7%) | Shawmut Aquatic Club | 01/16/2026 | 2026 NE SAC Bronze Championships | |
| 5509 | Marcus Zhu | 47.53 | 10 | B Min | BB: 42.89 (+4.64s | 9.8%) | Quicksilver Swimming | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 5510 | Ethan Mazzitti | 47.53 | 8 | B Min | BB: 42.89 (+4.64s | 9.8%) | 757swim | 02/07/2026 | 2026 8 And Under Southeastern District Champs | |
| 5511 | Hengsheen Wang | 47.53 | 9 | B Min | BB: 42.89 (+4.64s | 9.8%) | Chinook Aquatic Club | 03/28/2026 | 2026 PN Spring Showdown, Div 4 Approved | |
| 5512 | Francisco Hernandez | 47.53 | 10 | B Min | BB: 42.89 (+4.64s | 9.8%) | EL Paso Border Land Swim Team | 02/22/2026 | 2026 BD SC Jr Border Championship | |
| 5513 | Dohjin Park | 47.53 | 9 | B Min | BB: 42.89 (+4.64s | 9.8%) | Los Gatos Swim Club | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | |
| 5514 | Vincent Paavola | 47.53 | 8 | B Min | BB: 42.89 (+4.64s | 9.8%) | SwimMAC Carolina | 02/14/2026 | 2026 SwimMAC Qualifier Festival | |
| 5515 | Barron Vellonen | 47.54 | 10 | B Min | BB: 42.89 (+4.65s | 9.8%) | Monterey Bay Swim Club | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 5516 | Lucas San Valentin | 47.54 | 8 | B Min | BB: 42.89 (+4.65s | 9.8%) | The Woodlands Swim Team | 02/21/2025 | MAC Hosted 2025 Gulf 12 Under Champs | |
| 5517 | Maddox Haynes | 47.55 | 8 | B Min | BB: 42.89 (+4.66s | 9.8%) | Carrollton Bluefins | 01/17/2026 | 2026 GOAT TYR Team Challenge And SYOA | |
| 5518 | Luke Song | 47.55 | 10 | B Min | BB: 42.89 (+4.66s | 9.8%) | Tri-city Channel Cats | 12/07/2024 | 2024 IE VS Christmas Open | |
| 5519 | Yuvan Immaneni | 47.55 | 9 | B Min | BB: 42.89 (+4.66s | 9.8%) | Rockville Montgomery Swim Club | 03/20/2026 | 2026 RMSC Spring Finale | |
| 5520 | Max Moesker | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | VillaSport Swim Team | 10/11/2024 | PACK Pretty In Pink Invitational Meet 2024 | |
| 5521 | Lincoln Weaver | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | Catawba Valley Aquatic Club | 01/10/2026 | ATOM Frosty Invitational 2026 | |
| 5522 | Christian Mexal | 47.56 | 9 | B Min | BB: 42.89 (+4.67s | 9.8%) | Quest Swimming | 09/19/2025 | Quest Swimming Kickoff Intrasquad | |
| 5523 | Theodore Hazle | 47.56 | 8 | B Min | BB: 42.89 (+4.67s | 9.8%) | Egra Waves | 11/15/2025 | 2025 GR Gales Of November Open Invitational | |
| 5524 | Banks Kennedy | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | Twin Rivers YMCA | 11/22/2025 | GOLD Gobbler 2025 | |
| 5525 | Reynaldo Hernandez | 47.56 | 8 | B Min | BB: 42.89 (+4.67s | 9.8%) | Blue Marlins Of Hialeah Garden | 06/20/2026 | NMST BMHG June Summer Invite 26 (SCY) Cop | |
| 5526 | Edison de Silva | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | Swim Tampa Aquatics | 05/02/2026 | 2026 Berkeley May Day | |
| 5527 | James Munn | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | The Woodlands Swim Team | 10/25/2024 | 2024 TWST Halloween Meet | |
| 5528 | Theodore Craig | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | Bellingham Bay Swim Team | 03/06/2026 | 2026 BBST Seize The Day Invitational | |
| 5529 | Michael Sohn | 47.56 | 10 | B Min | BB: 42.89 (+4.67s | 9.8%) | Front Range Barracudas | 02/14/2026 | 2026 CO NCS 10 U Winter Spectacular | |
| 5530 | Charles Fikhman | 47.57 | 9 | B Min | BB: 42.89 (+4.68s | 9.8%) | Pacific Swim | 10/11/2025 | 2025 SI HSA All Ages B C | |
| 5531 | Oscar Patton | 47.57 | 9 | B Min | BB: 42.89 (+4.68s | 9.8%) | Dakota Riptide | 01/24/2025 | SFST SD 2025 January Invite | |
| 5532 | Harrison Green | 47.57 | 10 | B Min | BB: 42.89 (+4.68s | 9.8%) | Nova of Virginia | 01/09/2026 | NOVA New Year S Kick Off | |
| 5533 | Calder Pettersen | 47.57 | 9 | B Min | BB: 42.89 (+4.68s | 9.8%) | Cascade Swim Club | 10/12/2024 | 2024 PN CSC Fall Classic Invitational | |
| 5534 | Lucas Yuan | 47.57 | 7 | B Min | BB: 42.89 (+4.68s | 9.8%) | Mei\\\\\\'s Typhoons Swimming Club | 06/07/2026 | 2026 NE NSSC June Invitational At BC High | |
| 5535 | Asher Struble | 47.57 | 10 | B Min | BB: 42.89 (+4.68s | 9.8%) | YMCA East Hampton Hurricanes | 01/30/2026 | 2026 MR SSC Polar Bear Plunge | |
| 5536 | Lucas Heine | 47.57 | 9 | B Min | BB: 42.89 (+4.68s | 9.8%) | Foxjets Swim Team | 02/13/2026 | 2026 MN RSC President S Day Meet | |
| 5537 | Thatcher Pearson | 47.57 | 10 | B Min | BB: 42.89 (+4.68s | 9.8%) | Danvers YMCA Dolfins | 01/10/2026 | 2026 NE YNS YMCA Eastern MA Districts | |
| 5538 | Santiago Westbury | 47.57 | 10 | B Min | BB: 42.89 (+4.68s | 9.8%) | Piedmont Swim Team | 03/28/2026 | Piedmont Swim Team C B BB+ | |
| 5539 | Matvei Mihailov | 47.58 | 10 | B Min | BB: 42.89 (+4.69s | 9.9%) | Sarasota Sharks | 11/07/2025 | 2025 SYS Turkey Meet | |
| 5540 | Noah Quevedo | 47.58 | 10 | B Min | BB: 42.89 (+4.69s | 9.9%) | Blue Dolfins | 02/28/2026 | 2026 Spring Area 2 Championships | |
| 5541 | Miles Vuong | 47.58 | 10 | B Min | BB: 42.89 (+4.69s | 9.9%) | SOL Swim Team | 11/08/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 5542 | Kirk Li | 47.58 | 8 | B Min | BB: 42.89 (+4.69s | 9.9%) | Pacific Dragons Swim Team | 01/24/2026 | 2026 PN PDST Winter Invitational Meet Approv | |
| 5543 | John Knudsen | 47.58 | 10 | B Min | BB: 42.89 (+4.69s | 9.9%) | Puget Sound Swim Club | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 5544 | Jian Kim | 47.58 | 9 | B Min | BB: 42.89 (+4.69s | 9.9%) | Madison Swimming Association | 01/30/2026 | MSA Ray Fogg Memorial Meet 2026 | |
| 5545 | Paxton Winheim | 47.58 | 6 | B Min | BB: 42.89 (+4.69s | 9.9%) | Nova of Virginia | 03/21/2026 | NOVA Short Course Send Off 2026 | |
| 5546 | Barrett Sturgill | 47.58 | 9 | B Min | BB: 42.89 (+4.69s | 9.9%) | YMCA of Virginia\\\\\\'s Blue Ridge | 10/18/2025 | LY 2025 YMCA October Meet | |
| 5547 | Adam Ratki | 47.59 | 9 | B Min | BB: 42.89 (+4.70s | 9.9%) | Empire Swimming | 01/23/2026 | 2026 MR PAC Winter Classic Invitational | |
| 5548 | Nathan Smolyar | 47.59 | 10 | B Min | BB: 42.89 (+4.70s | 9.9%) | Nation\\\\\\'s Capital Swim Club | 01/17/2026 | PVS January Open 2026 Fairland | |
| 5549 | Olin Hargrove | 47.59 | 10 | B Min | BB: 42.89 (+4.70s | 9.9%) | Storm Aquatics | 02/06/2026 | 2026 MR YMID February Classic Copied | |
| 5550 | Ryan Li | 47.59 | 9 | B Min | BB: 42.89 (+4.70s | 9.9%) | Seattle Metropolitan Aquatic C | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
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.