USA Boys 10 & under - 50 Y Breast
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 | Henry Zheng | 41.86 | 9 | A Min | AA: 40.19 (+1.67s | 4.0%) | Aquajets Swim Team | 01/30/2026 | 2026 MN MTKA TYR Team Challenge | |
| 402 | William Syrett | 41.86 | 10 | A Min | AA: 40.19 (+1.67s | 4.0%) | Vacaville Swim Club | 10/02/2026 | 2026 VACA Harvest Hustle Swim Meet | |
| 403 | Quentin Lin | 41.87 | 9 | A Min | AA: 40.19 (+1.68s | 4.0%) | Eastern Nassau Aquatic Club | 11/28/2025 | 2025 MR LIE Thanksgiving Invitational | |
| 404 | Eli Lawson | 41.88 | 9 | A Min | AA: 40.19 (+1.69s | 4.0%) | Dolphin Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 405 | Kian Bahmani | 41.90 | 10 | A Min | AA: 40.19 (+1.71s | 4.1%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 406 | Santiago Diaz | 41.91 | 9 | A Min | AA: 40.19 (+1.72s | 4.1%) | Rockville Montgomery Swim Club | 03/12/2026 | 2026 PV SC 14 Under Championships Copied | |
| 407 | Cole Cinadr | 41.92 | 10 | A Min | AA: 40.19 (+1.73s | 4.1%) | Hudson Explorer Aquatic | 03/12/2026 | 2026 OH SC Junior Championships | |
| 408 | Koa Tejwani | 41.92 | 9 | A Min | AA: 40.19 (+1.73s | 4.1%) | Jcc Waves | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 409 | River Morse | 41.92 | 10 | A Min | AA: 40.19 (+1.73s | 4.1%) | Swim Gym | 10/10/2026 | NMST BMHG October Invite 26 | |
| 410 | Mason Wong | 41.93 | 10 | A Min | AA: 40.19 (+1.74s | 4.1%) | Cavalier Aquatics/Piedmont Fam | 02/27/2026 | 2026 SW District Champs 9 Over | |
| 411 | Ryder Carsey | 41.93 | 10 | A Min | AA: 40.19 (+1.74s | 4.1%) | Greater Toledo Aquatic Club | 03/12/2026 | 2026 OH SC Junior Championships | |
| 412 | Miguel Ramirez | 41.93 | 10 | A Min | AA: 40.19 (+1.74s | 4.1%) | Blue Wave Swimming | 10/09/2026 | 2026 GTSA TYR Swim Classic | |
| 413 | Matt Borremans | 41.93 | 10 | A Min | AA: 40.19 (+1.74s | 4.1%) | South Florida Aquatic Club | 10/02/2026 | 2026 Speedo SOFLO Distance Challenge | |
| 414 | William Martzke | 41.94 | 10 | A Min | AA: 40.19 (+1.75s | 4.2%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 02/27/2026 | 2026 Junior Cup | |
| 415 | Maddox Jordan | 41.94 | 10 | A Min | AA: 40.19 (+1.75s | 4.2%) | Prime Aquatics | 01/16/2026 | 2026 TNAQ JANUARY INVITATIONAL | |
| 416 | Elias Morgan | 41.94 | 10 | A Min | AA: 40.19 (+1.75s | 4.2%) | Huntsville Swim Association | 10/16/2026 | 2026 HSA Fran Norris Meet | |
| 417 | Christian Oh | 41.95 | 9 | A Min | AA: 40.19 (+1.76s | 4.2%) | Asphalt Green Unified Aquatics | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 418 | Lucas Ni | 41.96 | 9 | A Min | AA: 40.19 (+1.77s | 4.2%) | Makos Aquatics Club of Gainesv | 09/11/2026 | 2026 Hydro Fall Classic | |
| 419 | Jeffrey Crouse | 41.96 | 10 | A Min | AA: 40.19 (+1.77s | 4.2%) | Livermore AquaCowboys | 07/25/2026 | Zone 2 Summer Championships | |
| 420 | Andrew Pappageorge | 41.97 | 10 | A Min | AA: 40.19 (+1.78s | 4.2%) | Herndon Aquatic Club | 03/12/2026 | 2026 PV SC 14 Under Championships Copied | |
| 421 | Timur Kochmar | 41.97 | 9 | A Min | AA: 40.19 (+1.78s | 4.2%) | SwimRight Team | 06/06/2026 | NMST June Invite 26 | |
| 422 | Sebastian Fernandez | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Southridge | 02/14/2025 | 2025 OR HS 6a 2 | |
| 423 | William Yao | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Fontana Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 424 | Jack Baker | 41.99 | 8 | A Min | AA: 40.19 (+1.80s | 4.3%) | Egra Waves | 03/14/2026 | 2026 SCY 10 Under Championship Meet | |
| 425 | Drew Zdrada | 41.99 | 9 | A Min | AA: 40.19 (+1.80s | 4.3%) | Saline Swim Team | 03/14/2026 | 2026 SCY 10 Under Championship Meet | |
| 426 | Joseph Fernandez | 42.00 | 9 | A Min | AA: 40.19 (+1.81s | 4.3%) | Staten Island Aquatics Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 427 | Hao Lau | 42.01 | 10 | A Min | AA: 40.19 (+1.82s | 4.3%) | Loyola Blakefield Aquatics | 03/05/2026 | 2026 MD LSC 14 U Championships | |
| 428 | Colin Hui | 42.01 | 10 | A Min | AA: 40.19 (+1.82s | 4.3%) | Highlands Ranch Aquatics | 09/11/2026 | 2026 CO Friday Night At The Races | |
| 429 | David Chen | 42.03 | 10 | A Min | AA: 40.19 (+1.84s | 4.4%) | Tualatin Hills Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 430 | Davis King | 42.07 | 9 | A Min | AA: 40.19 (+1.88s | 4.5%) | Tac Titans | 02/26/2026 | 2026 NCS SC AG CHAMPS | |
| 431 | Leo Ioffe | 42.08 | 10 | A Min | AA: 40.19 (+1.89s | 4.5%) | Santa Clara Swim Club | 09/19/2026 | 2026 Milpitas Aquatic Club Season Kick Off | |
| 432 | Preston Mathis | 42.09 | 10 | A Min | AA: 40.19 (+1.90s | 4.5%) | Seahawks Swim Team | 02/15/2025 | 2025 PA Sweetheart Special | |
| 433 | Holton Lika | 42.09 | 10 | A Min | AA: 40.19 (+1.90s | 4.5%) | Swim Florida | 09/06/2026 | FGC KW ABC Pentathlon Invitational 09062026 | |
| 434 | Eddie Bi | 42.09 | 10 | A Min | AA: 40.19 (+1.90s | 4.5%) | California Dolphins Swim Team | 10/10/2026 | Orinda Aquatics PC SC C B BB+ | |
| 435 | Ian Feng | 42.11 | 9 | BB Min | A: 42.09 (+0.02s | 0.0%) | Metro Area Life Time | 02/21/2026 | CAT 12 Under Silver Bronze Champs Region A | |
| 436 | Felician Perski Smaluch | 42.11 | 10 | BB Min | A: 42.09 (+0.02s | 0.0%) | Jupiter Dragons Swim Team | 06/27/2026 | Firecracker Meet 2026 | |
| 437 | Mason Stout | 42.11 | 10 | BB Min | A: 42.09 (+0.02s | 0.0%) | Foxjets Swim Team | 01/09/2026 | 2026 MN FOXJ Winter Classic | |
| 438 | Arthur Fleischman | 42.12 | 10 | BB Min | A: 42.09 (+0.03s | 0.1%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 439 | Mark Kiselev | 42.12 | 9 | BB Min | A: 42.09 (+0.03s | 0.1%) | Royal Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 440 | Joon Cha | 42.12 | 10 | BB Min | A: 42.09 (+0.03s | 0.1%) | Sunnyvale Swim Club | 09/18/2026 | PSL Pacifica Season Launch CBA+ Meet | |
| 441 | Arthur Shackelton | 42.13 | 10 | BB Min | A: 42.09 (+0.04s | 0.1%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 442 | Henry Sundberg | 42.15 | 9 | BB Min | A: 42.09 (+0.06s | 0.1%) | North Bay Aquatics | 09/26/2026 | WANV CBA+ Endless Summer Meet 2026 | |
| 443 | Cheng Dou | 42.17 | 10 | BB Min | A: 42.09 (+0.08s | 0.2%) | Alto Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 444 | Luke Ivens-Brown | 42.17 | 9 | BB Min | A: 42.09 (+0.08s | 0.2%) | Atlantis Swimming | 02/01/2026 | February Closed Invite | |
| 445 | Cash Bailey | 42.19 | 10 | BB Min | A: 42.09 (+0.10s | 0.2%) | Excel Aquatics | 09/25/2026 | 2026 Excel Aquatics Fall Fest Invite | |
| 446 | Liam Taylor | 42.19 | 9 | BB Min | A: 42.09 (+0.10s | 0.2%) | Southwest Stars Swim Club | 10/09/2026 | 2026 FAST Pumpkin Plunge | |
| 447 | Zane Seifel | 42.19 | 10 | BB Min | A: 42.09 (+0.10s | 0.2%) | Treasure Coast Aquatics | 08/22/2026 | TCSC Sprint Invitational | |
| 448 | Logan Zhou | 42.19 | 10 | BB Min | A: 42.09 (+0.10s | 0.2%) | Mason Manta Rays | 03/12/2026 | 2026 OH SC Junior Championships | |
| 449 | Yusen Wang | 42.20 | 9 | BB Min | A: 42.09 (+0.11s | 0.3%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 450 | Levi Halbe | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Nation\\\\\\'s Capital Swim Club | 12/11/2025 | 2025 Katie Ledecky Invitational | |
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.