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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1651 | Martin Li | 39.19 | 9 | BB Min | A: 37.59 (+1.60s | 4.1%) | Wave Aquatics | 12/12/2025 | 2025 PN 14 Under Short Course Champs Approved | |
| 1652 | Thomas O'Shea | 39.19 | 10 | BB Min | A: 37.59 (+1.60s | 4.1%) | Revolution Swim Club | 01/30/2026 | 2026 NE GS Silver Championships | |
| 1653 | Beck Merkle | 39.20 | 10 | BB Min | A: 37.59 (+1.61s | 4.1%) | Jersey Wahoos | 11/07/2025 | 2025 Mid Atlantic AG Championship Showdown | |
| 1654 | Liam Heppermann | 39.20 | 10 | BB Min | A: 37.59 (+1.61s | 4.1%) | Seahawks Swim club | 02/27/2026 | Ozark Division I Championship | |
| 1655 | Cameron Benge | 39.20 | 10 | BB Min | A: 37.59 (+1.61s | 4.1%) | Mason Manta Rays | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1656 | Luca Fu | 39.21 | 9 | BB Min | A: 37.59 (+1.62s | 4.1%) | Lakeridge Swim Team | 03/14/2026 | 2026 NNA AGO | |
| 1657 | Oliver Song Zhang | 39.21 | 10 | BB Min | A: 37.59 (+1.62s | 4.1%) | West Coast Aquatics | 03/28/2026 | 2026 PN Spring Showdown, Div 3 Approved | |
| 1658 | Wonmin Kim | 39.21 | 10 | BB Min | A: 37.59 (+1.62s | 4.1%) | Dart Swimming | 11/08/2025 | Folsom Classic 2025 | |
| 1659 | Michael Parks | 39.21 | 10 | BB Min | A: 37.59 (+1.62s | 4.1%) | Huntsville Swim Association | 01/16/2026 | 2026 HSA TYR Invitational | |
| 1660 | Nolan Chaffee | 39.21 | 10 | BB Min | A: 37.59 (+1.62s | 4.1%) | New Wave Swim Team | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 1661 | Elliott Johnson | 39.21 | 10 | BB Min | A: 37.59 (+1.62s | 4.1%) | Bellevue Club Swim Team | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 1662 | Connor Wood | 39.22 | 9 | BB Min | A: 37.59 (+1.63s | 4.2%) | Unattached | 04/11/2025 | 2025 Boys Girls Clubs National Swim Champs | |
| 1663 | James Lee | 39.22 | 10 | BB Min | A: 37.59 (+1.63s | 4.2%) | SwimMAC Carolina | 01/23/2026 | 2026 NC SwimMAC Battle Of The Crown | |
| 1664 | Henry Moore | 39.23 | 10 | BB Min | A: 37.59 (+1.64s | 4.2%) | Rockville Montgomery Swim Club | 03/20/2026 | 2026 RMSC Spring Finale | |
| 1665 | Hunter Jankowski | 39.23 | 10 | BB Min | A: 37.59 (+1.64s | 4.2%) | Twisters Swim Club | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 1666 | Luca Axente | 39.23 | 10 | BB Min | A: 37.59 (+1.64s | 4.2%) | Dynamo Swim Club | 03/06/2026 | Speedo Southern Premier | |
| 1667 | Nolan Lu | 39.24 | 10 | BB Min | A: 37.59 (+1.65s | 4.2%) | DeAnza Cupertino Aquatics | 03/22/2025 | PSL SC CBA+ Meet | |
| 1668 | Liam Somers | 39.24 | 10 | BB Min | A: 37.59 (+1.65s | 4.2%) | Longhorn Aquatics | 12/13/2025 | 2025 ST WOW Hot Chocolate Jamboree | |
| 1669 | Aleksandr Sofronov | 39.24 | 10 | BB Min | A: 37.59 (+1.65s | 4.2%) | Laker Swim | 01/17/2026 | 2026 GOAT TYR Team Challenge And SYOA | |
| 1670 | Robert Wasilewski | 39.25 | 10 | BB Min | A: 37.59 (+1.66s | 4.2%) | The St. James Swim Club | 12/04/2025 | 2025 Sport Fair Winter Classic | |
| 1671 | Quinlan Doyle | 39.25 | 10 | BB Min | A: 37.59 (+1.66s | 4.2%) | Commonwealth Swimming | 03/13/2026 | 2026 Shawmut NE Cup Championship | |
| 1672 | Landon Gura | 39.25 | 9 | BB Min | A: 37.59 (+1.66s | 4.2%) | North Coast Aquatics | 11/08/2025 | HSA All Ages NTS | |
| 1673 | Noah Block | 39.25 | 9 | BB Min | A: 37.59 (+1.66s | 4.2%) | Team Suffolk | 12/11/2025 | 2025 MR HAUP Eagle Invitational | |
| 1674 | Beckett Macmillan | 39.25 | 10 | BB Min | A: 37.59 (+1.66s | 4.2%) | Oly Swimming | 01/10/2026 | 2026 PA Invite | |
| 1675 | Samuel Scalvini | 39.26 | 10 | BB Min | A: 37.59 (+1.67s | 4.3%) | Marlins Of Raleigh | 02/13/2026 | Speedo 2026 MOR Short Course Qualifier Meet | |
| 1676 | Paxton Coggins | 39.26 | 9 | BB Min | A: 37.59 (+1.67s | 4.3%) | Y-Spartaquatics Swim Club | 01/16/2026 | 2026 TNAQ JANUARY INVITATIONAL | |
| 1677 | Brian Lin | 39.26 | 10 | BB Min | A: 37.59 (+1.67s | 4.3%) | New Albany Aquatic Club | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1678 | Bennett Brunow | 39.26 | 9 | BB Min | A: 37.59 (+1.67s | 4.3%) | Findlay YMCA Frogs | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1679 | Sebastian Bezboruah | 39.27 | 10 | BB Min | A: 37.59 (+1.68s | 4.3%) | Com Aquatics | 11/14/2025 | 2025 ST AAAA AH PW NC Invite | |
| 1680 | Timothy Chung | 39.27 | 10 | BB Min | A: 37.59 (+1.68s | 4.3%) | Long Island Aquatic Club | 01/30/2026 | 2026 MR SSC Polar Bear Plunge | |
| 1681 | Joseph Gallagher | 39.27 | 10 | BB Min | A: 37.59 (+1.68s | 4.3%) | Egra Waves | 03/07/2026 | 2026 Lake Michigan Regional Meet | |
| 1682 | Ezra Landsman | 39.27 | 10 | BB Min | A: 37.59 (+1.68s | 4.3%) | The Fish | 01/31/2026 | The 2026 Super FISH Bowl XVI | |
| 1683 | Connor Lee | 39.28 | 8 | BB Min | A: 37.59 (+1.69s | 4.3%) | Condors Swim Club | 03/07/2026 | 2026 MR Metro 8 Under Championships | |
| 1684 | Thomas Halford | 39.28 | 10 | BB Min | A: 37.59 (+1.69s | 4.3%) | Pikes Peak Athletics | 02/20/2026 | 2026 CO PPA February Frenzy Last Chance Meet | |
| 1685 | Calynn Daniel | 39.28 | 10 | BB Min | A: 37.59 (+1.69s | 4.3%) | Southeast Tennessee Swimming | 02/27/2026 | 2026 SE Southeastern Winter SC Championships | |
| 1686 | Kingston Smith | 39.28 | 10 | BB Min | A: 37.59 (+1.69s | 4.3%) | Parkway-Rockwood Gateway Swim | 03/07/2026 | 2026 GTWY 8 Under Champs | |
| 1687 | Thomas Roscetti | 39.29 | 10 | BB Min | A: 37.59 (+1.70s | 4.3%) | Nation\\\\\\'s Capital Swim Club | 02/13/2026 | 2026 ASA President S Day Classic | |
| 1688 | Hunter Gehrke | 39.29 | 10 | BB Min | A: 37.59 (+1.70s | 4.3%) | Arizona Seals Swimming Academy | 02/13/2026 | 34th Annual Lost Dutchman Invitational | |
| 1689 | Ryan Lee | 39.29 | 10 | BB Min | A: 37.59 (+1.70s | 4.3%) | Highlands Ranch Aquatics | 02/20/2026 | 2026 CO PPA February Frenzy Last Chance Meet | |
| 1690 | Thomas Prochazka | 39.29 | 10 | BB Min | A: 37.59 (+1.70s | 4.3%) | East Coast Aquatic Team | 02/13/2026 | 2026 Southeast District 9 12 Championship | |
| 1691 | Duncan Kirby | 39.29 | 9 | BB Min | A: 37.59 (+1.70s | 4.3%) | Fort Meigs YMCA Stingrays | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1692 | Anderson Christopherson | 39.29 | 9 | BB Min | A: 37.59 (+1.70s | 4.3%) | YMCA of the Triangle Area Swim | 03/19/2026 | 2026 USRY Short Course Champs | |
| 1693 | Arick Yuan | 39.30 | 10 | BB Min | A: 37.59 (+1.71s | 4.4%) | Santa Clara Swim Club | 10/11/2025 | QSS Santa Cruz Competenicia C B A+ | |
| 1694 | Kristopher Odom | 39.30 | 9 | BB Min | A: 37.59 (+1.71s | 4.4%) | Upper Valley Aquatic Club | 01/30/2026 | 2026 NE UVAC Silvers | |
| 1695 | Brooks Farrington | 39.30 | 9 | BB Min | A: 37.59 (+1.71s | 4.4%) | Life Time Oregon Swim Team | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 1696 | William Martzke | 39.30 | 10 | BB Min | A: 37.59 (+1.71s | 4.4%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 01/16/2026 | 2026 Odd Age Classic | |
| 1697 | Christian Hebron | 39.31 | 9 | BB Min | A: 37.59 (+1.72s | 4.4%) | Prince William Swim Club | 02/13/2026 | 2026 Northern District 12 Under Championship | |
| 1698 | Declan Bahr | 39.31 | 10 | BB Min | A: 37.59 (+1.72s | 4.4%) | Hurricane Penguins Swim Club | 03/07/2026 | 2026 Lake Ontario Regional Meet | |
| 1699 | Lincoln Flynn | 39.31 | 9 | BB Min | A: 37.59 (+1.72s | 4.4%) | Nation\\\\\\'s Capital Swim Club | 03/21/2026 | 2026 MAKO SPRING FLING | |
| 1700 | Benjamin Johnson | 39.32 | 10 | BB Min | A: 37.59 (+1.73s | 4.4%) | Spy Swim Team | 03/05/2026 | 2026 MD LSC 14 U Championships | |
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.