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 | |
|---|---|---|---|---|---|---|---|---|---|
| 451 | Sebastian Fernandez | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Southridge | 02/14/2025 | 2025 OR HS 6a 2 | |
| 452 | 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 | |
| 453 | 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 | |
| 454 | Koa Maday | 41.99 | 10 | A Min | AA: 40.19 (+1.80s | 4.3%) | Kona Aquatics Club | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 455 | 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 | |
| 456 | 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 | |
| 457 | 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 | |
| 458 | Matthew Maris-Wolf | 42.02 | 10 | A Min | AA: 40.19 (+1.83s | 4.4%) | Williamsburg Aquatic Club | 02/13/2026 | 2026 Southeast District 9 12 Championship | |
| 459 | Oliver Catala | 42.02 | 10 | A Min | AA: 40.19 (+1.83s | 4.4%) | Gulliver Swim Club | 03/05/2026 | 2026 FG Age Group SCY Championships | |
| 460 | 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 | |
| 461 | Kevin Nguyen | 42.04 | 10 | A Min | AA: 40.19 (+1.85s | 4.4%) | Legacy Aquatics | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 462 | Luke Chai | 42.04 | 9 | A Min | AA: 40.19 (+1.85s | 4.4%) | Pleasanton Seahawks | 07/25/2026 | Zone 2 Summer Championships | |
| 463 | Jackson Keen | 42.06 | 10 | A Min | AA: 40.19 (+1.87s | 4.4%) | Dynamo Swim Club | 03/06/2026 | Speedo Southern Premier | |
| 464 | Jaxson Ransom | 42.06 | 10 | A Min | AA: 40.19 (+1.87s | 4.4%) | Valley Swim Team Phoenix | 03/12/2026 | 2026 Virginia Swimming SC Age Group Champions | |
| 465 | Davis King | 42.07 | 9 | A Min | AA: 40.19 (+1.88s | 4.5%) | Tac Titans | 02/26/2026 | 2026 NCS SC AG CHAMPS | |
| 466 | Jack Herron | 42.08 | 10 | A Min | AA: 40.19 (+1.89s | 4.5%) | Hydra Aquatics | 03/12/2026 | 2026 OH SC Junior Championships | |
| 467 | Aiden Abreu | 42.09 | 10 | A Min | AA: 40.19 (+1.90s | 4.5%) | Hauppauge Swimming | 12/11/2025 | 2025 MR HAUP Eagle Invitational | |
| 468 | Preston Mathis | 42.09 | 10 | A Min | AA: 40.19 (+1.90s | 4.5%) | Seahawks Swim Team | 02/15/2025 | 2025 PA Sweetheart Special | |
| 469 | 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 | |
| 470 | 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 | |
| 471 | Ryder Stirling | 42.11 | 10 | BB Min | A: 42.09 (+0.02s | 0.0%) | West Ottawa Swim Club | 03/14/2026 | 2026 SCY 10 Under Championship Meet | |
| 472 | 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 | |
| 473 | 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 | |
| 474 | 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 | |
| 475 | Kai Kitamori | 42.14 | 10 | BB Min | A: 42.09 (+0.05s | 0.1%) | East Bay Bat Rays | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 476 | 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 | |
| 477 | Luke Ivens-Brown | 42.17 | 9 | BB Min | A: 42.09 (+0.08s | 0.2%) | Atlantis Swimming | 02/01/2026 | February Closed Invite | |
| 478 | Logan Zhou | 42.19 | 9 | BB Min | A: 42.09 (+0.10s | 0.2%) | Mason Manta Rays | 03/12/2026 | 2026 OH SC Junior Championships | |
| 479 | 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 | |
| 480 | 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 | |
| 481 | Anderson Bradley | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Coastal Machine Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 482 | Logan Nguyen | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Potomac Marlins | 03/20/2026 | March Madness 2026 | |
| 483 | Jason Yin | 42.22 | 9 | BB Min | A: 42.09 (+0.13s | 0.3%) | Unattached | 11/15/2025 | Alto Nov 15 16 Fall Frolic | |
| 484 | Jayden Zhen | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | Adrienne C Nelson | 02/15/2025 | 2025 OR HS 6a 4 | |
| 485 | Conall Barrett | 42.22 | 9 | BB Min | A: 42.09 (+0.13s | 0.3%) | Upper Valley Aquatic Club | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 486 | Daniel Ferroni | 42.23 | 10 | BB Min | A: 42.09 (+0.14s | 0.3%) | Jersey Wahoos | 11/07/2025 | 2025 Mid Atlantic AG Championship Showdown | |
| 487 | Nathan Campbell | 42.23 | 9 | BB Min | A: 42.09 (+0.14s | 0.3%) | Southwestern Aquatics Team - S | 02/21/2025 | 2025 Gulf 12 Under Champs (DADS) | |
| 488 | Michael Bevziuc | 42.23 | 9 | BB Min | A: 42.09 (+0.14s | 0.3%) | Prince William Swim Club | 02/13/2026 | 2026 Northern District 12 Under Championship | |
| 489 | Aaron Lam | 42.23 | 10 | BB Min | A: 42.09 (+0.14s | 0.3%) | South Shore YMCA Strypers | 05/10/2026 | 2026 NE NSSC Invitational At BC High | |
| 490 | Kaizen Toung | 42.24 | 9 | BB Min | A: 42.09 (+0.15s | 0.4%) | Orinda Aquatics | 11/08/2025 | Brentwood Seawolves SCY C B BB+ | |
| 491 | Gavin Samad | 42.24 | 9 | BB Min | A: 42.09 (+0.15s | 0.4%) | Unified Aquatics Club | 03/12/2026 | 2026 OH SC Junior Championships | |
| 492 | Rhyne Miller | 42.24 | 10 | BB Min | A: 42.09 (+0.15s | 0.4%) | Mecklenburg Swim Association | 01/23/2026 | 2026 TEAM Arena Western Open Copied | |
| 493 | Brayden Lee | 42.24 | 10 | BB Min | A: 42.09 (+0.15s | 0.4%) | Dedham Health Hydra | 03/20/2026 | 2026 NE NSSC March Madness At MIT | |
| 494 | Miles Kavanaugh | 42.25 | 10 | BB Min | A: 42.09 (+0.16s | 0.4%) | University Place Aquatic Club | 07/11/2026 | 2026 PN UPAC Summer Challenge Intr Approved | |
| 495 | Andrew Knol | 42.25 | 10 | BB Min | A: 42.09 (+0.16s | 0.4%) | Pacific Swim | 07/10/2026 | 2026 SI SBA All Ages Last Chance Meet | |
| 496 | Alex Yang | 42.26 | 10 | BB Min | A: 42.09 (+0.17s | 0.4%) | Three Village Swim Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 497 | Phillippe Choi | 42.27 | 10 | BB Min | A: 42.09 (+0.18s | 0.4%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 498 | Arieh Elias | 42.29 | 10 | BB Min | A: 42.09 (+0.20s | 0.5%) | Unattached | 01/17/2026 | 2026 PV January Open Audrey Moore | |
| 499 | Jordan Melenbrink | 42.31 | 9 | BB Min | A: 42.09 (+0.22s | 0.5%) | Oly Swimming | 03/14/2026 | 2026 SCY 10 Under Championship Meet | |
| 500 | Kevin Liu | 42.31 | 10 | BB Min | A: 42.09 (+0.22s | 0.5%) | Arctic Aquatics | 05/01/2026 | 2026 NE ARCT Spring Specialty Meet | |
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.