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 | |
|---|---|---|---|---|---|---|---|---|---|
| 601 | Mason Stout | 42.11 | 9 | BB Min | A: 42.09 (+0.02s | 0.0%) | Foxjets Swim Team | 01/09/2026 | 2026 MN FOXJ Winter Classic | |
| 602 | Jayden Liu | 42.11 | 9 | BB Min | A: 42.09 (+0.02s | 0.0%) | Katy Aquatic Team For Youth | 01/31/2025 | 2025 Fleet Mardi Gras | |
| 603 | Joshua Chen | 42.11 | 10 | BB Min | A: 42.09 (+0.02s | 0.0%) | Bellevue Club Swim Team | 10/11/2025 | 2025 PN MMSC Fall Invite | |
| 604 | Kellan Simpkins | 42.12 | 10 | BB Min | A: 42.09 (+0.03s | 0.1%) | North Palm Beach Swim Club | 10/03/2025 | Mike Horgan Memorial Inv | |
| 605 | Arthur Fleischman | 42.12 | 9 | BB Min | A: 42.09 (+0.03s | 0.1%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 606 | Arthur Shackelton | 42.13 | 9 | BB Min | A: 42.09 (+0.04s | 0.1%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 607 | John Nguyen | 42.14 | 11 | BB Min | A: 42.09 (+0.05s | 0.1%) | Byron Center Aquatics | 01/17/2026 | MLA 2026 Big Lake Invite | |
| 608 | Kaleb Robinson | 42.14 | 9 | BB Min | A: 42.09 (+0.05s | 0.1%) | Rockville Montgomery Swim Club | 01/16/2026 | 2026 RMSC January Intrasquad Meet | |
| 609 | Thomas Halford | 42.14 | 10 | BB Min | A: 42.09 (+0.05s | 0.1%) | Pikes Peak Athletics | 12/12/2025 | 2025 CO FAST Bill Spahn Mid Season Finale | |
| 610 | Samuel Zvenigorodskiy | 42.15 | 10 | BB Min | A: 42.09 (+0.06s | 0.1%) | Jcc Sea Serpents | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 611 | Ronel Acot | 42.15 | 10 | BB Min | A: 42.09 (+0.06s | 0.1%) | Zone 1 North All Stars | 05/18/2025 | 2025 Pacific Swimming Zone All Star Meet | |
| 612 | Jasper Albers | 42.15 | 10 | BB Min | A: 42.09 (+0.06s | 0.1%) | Mason Makos Swim Team | 02/07/2026 | 2026 MAKO QUALIFIER | |
| 613 | Brian Celedon | 42.16 | 10 | BB Min | A: 42.09 (+0.07s | 0.2%) | Y in Central Maryland Blue Cra | 02/06/2026 | 2026 Last Chance Qualifying Meet | |
| 614 | Luke Ivens-Brown | 42.17 | 9 | BB Min | A: 42.09 (+0.08s | 0.2%) | Atlantis Swimming | 02/01/2026 | February Closed Invite | |
| 615 | Griffin Nhu | 42.18 | 10 | BB Min | A: 42.09 (+0.09s | 0.2%) | Rockville Montgomery Swim Club | 11/01/2025 | 2025 RMSC Autumn 350 Challenge Meet | |
| 616 | Liam Kwak | 42.19 | 10 | BB Min | A: 42.09 (+0.10s | 0.2%) | Life Time Colorado Swim Club | 02/13/2026 | 2026 CO Valentine Open | |
| 617 | Stanley Kang | 42.20 | 10 | BB Min | A: 42.09 (+0.11s | 0.3%) | Long Island Aquatic Club | 01/09/2026 | 2026 MR TVSC TJ Kelly Memorial Joust | |
| 618 | Maximus Russo | 42.20 | 11 | BB Min | A: 42.09 (+0.11s | 0.3%) | YMCA of the North Shore Sharks | 02/07/2026 | 2026 NE YNS Last Chance Qualifier | |
| 619 | Calvin Yang | 42.20 | 10 | BB Min | A: 42.09 (+0.11s | 0.3%) | Annapolis Swim Club | 12/04/2025 | 2025 Sport Fair Winter Classic | |
| 620 | Levi Halbe | 42.21 | 9 | BB Min | A: 42.09 (+0.12s | 0.3%) | Nation\\\\\\'s Capital Swim Club | 12/11/2025 | 2025 Katie Ledecky Invitational | |
| 621 | Fletcher Baral | 42.21 | 9 | BB Min | A: 42.09 (+0.12s | 0.3%) | Saint Andrew\\\\\\'s Aquatics | 11/01/2025 | Piranhas Turkey Classic 2025 | |
| 622 | Jason Yin | 42.22 | 9 | BB Min | A: 42.09 (+0.13s | 0.3%) | Unattached | 11/15/2025 | Alto Nov 15 16 Fall Frolic | |
| 623 | Jayden Zhen | 42.22 | 9 | BB Min | A: 42.09 (+0.13s | 0.3%) | Adrienne C Nelson | 02/15/2025 | 2025 OR HS 6a 4 | |
| 624 | Aiden Cowles | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | SwimMAC Carolina | 09/27/2025 | 2025 NC SwimMac Blue Orange Intrasquad | |
| 625 | 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 | |
| 626 | Harvey Clark | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | Pompano Beach Piranhas | 12/06/2025 | 2025 Pompano Beach Santa Claus Meet | |
| 627 | Justin Zhao | 42.23 | 10 | BB Min | A: 42.09 (+0.14s | 0.3%) | Aquaracers Swim Club | 09/27/2025 | 2025 MR FREE Season Starter | |
| 628 | Enzo Harter | 42.23 | 10 | BB Min | A: 42.09 (+0.14s | 0.3%) | Beaverton Area Aquatics Club | 10/17/2025 | 2025 CST Harvest Open | |
| 629 | 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 | |
| 630 | Nathan Campbell | 42.23 | 8 | BB Min | A: 42.09 (+0.14s | 0.3%) | Southwestern Aquatics Team - S | 02/21/2025 | 2025 Gulf 12 Under Champs (DADS) | |
| 631 | 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+ | |
| 632 | Rhyne Miller | 42.24 | 9 | BB Min | A: 42.09 (+0.15s | 0.4%) | Mecklenburg Swim Association | 01/23/2026 | 2026 TEAM Arena Western Open Copied | |
| 633 | Kennedy Tang | 42.25 | 9 | BB Min | A: 42.09 (+0.16s | 0.4%) | Harbor Seals | 12/13/2025 | 2025 MR TRI Winter SCY Invitational | |
| 634 | Winter Su | 42.25 | 11 | BB Min | A: 42.09 (+0.16s | 0.4%) | Asphalt Green Unified Aquatics | 01/30/2026 | 2026 MR LIE Second Chance Invitational | |
| 635 | Peter Petkov | 42.26 | 9 | BB Min | A: 42.09 (+0.17s | 0.4%) | Triton Aquatics Club | 09/27/2025 | PC LAC C B BB | |
| 636 | Michael Bevziuc | 42.26 | 8 | BB Min | A: 42.09 (+0.17s | 0.4%) | Prince William Swim Club | 11/22/2025 | NOVA Cranberry Contender | |
| 637 | Noah Chusuei | 42.26 | 10 | BB Min | A: 42.09 (+0.17s | 0.4%) | Badger Swim Club,Inc. | 01/17/2026 | 2026 MR AGUA MLK Invitational | |
| 638 | Jack Baker | 42.26 | 8 | BB Min | A: 42.09 (+0.17s | 0.4%) | Egra Waves | 02/07/2026 | 2026 Grand Rapids Open | |
| 639 | Phillippe Choi | 42.27 | 9 | BB Min | A: 42.09 (+0.18s | 0.4%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 640 | Henry Joos | 42.27 | 10 | BB Min | A: 42.09 (+0.18s | 0.4%) | Bolles School Sharks | 09/14/2025 | 2025 September Splash | |
| 641 | Nathan Mellott | 42.28 | 10 | BB Min | A: 42.09 (+0.19s | 0.4%) | Rockville Montgomery Swim Club | 10/17/2025 | 2025 RMSC October Kick Off Classic | |
| 642 | Eli Lawson | 42.29 | 9 | BB Min | A: 42.09 (+0.20s | 0.5%) | Dolphin Aquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 643 | Arieh Elias | 42.29 | 10 | BB Min | A: 42.09 (+0.20s | 0.5%) | Unattached | 01/17/2026 | 2026 PV January Open Audrey Moore | |
| 644 | Ilan Schiff | 42.29 | 10 | BB Min | A: 42.09 (+0.20s | 0.5%) | Arlington Aquatic Club | 01/17/2026 | 2026 PV January Open Audrey Moore | |
| 645 | Ryan Chen | 42.30 | 10 | BB Min | A: 42.09 (+0.21s | 0.5%) | DeAnza Cupertino Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 646 | John Piracci | 42.31 | 9 | BB Min | A: 42.09 (+0.22s | 0.5%) | SwimRVA | 12/11/2025 | 2025 East Coast WinterFest | |
| 647 | Elijah Hutagalung | 42.31 | 9 | BB Min | A: 42.09 (+0.22s | 0.5%) | Aspire Aquatics of Colorado | 02/28/2025 | 2025 CO CSI 14 U Age Group Championships | |
| 648 | Connor West | 42.31 | 9 | BB Min | A: 42.09 (+0.22s | 0.5%) | The Spartans of La Canada | 03/13/2025 | 2025 SCS Spring Age Group Champs @ Armada | |
| 649 | Dylan Acciardo | 42.33 | 10 | BB Min | A: 42.09 (+0.24s | 0.6%) | Bayside Branch YMCA | 02/01/2026 | 2026 NE NCYW 36th Annual YMCA Pentathlon | |
| 650 | Franco Martinez | 42.34 | 10 | BB Min | A: 42.09 (+0.25s | 0.6%) | EL Paso Border Land Swim Team | 12/19/2025 | 2025 BD Leo Cancellare Memorial Swim 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.