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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2001 | Jayden Teng | 39.97 | 10 | BB Min | A: 37.59 (+2.38s | 6.0%) | Arctic Aquatics | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 2002 | Andrew Xie | 39.97 | 10 | BB Min | A: 37.59 (+2.38s | 6.0%) | Tualatin Hills Swim Club | 10/17/2025 | 2025 THSC Fall Open | |
| 2003 | Adrian Pascu | 39.98 | 9 | BB Min | A: 37.59 (+2.39s | 6.0%) | Gold\\\\\\'s Aquatics Club (Camas) | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 2004 | Owen Matarazzo | 39.98 | 10 | BB Min | A: 37.59 (+2.39s | 6.0%) | The Spartans of La Canada | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 2005 | Cylus Hageman | 39.98 | 10 | BB Min | A: 37.59 (+2.39s | 6.0%) | SlipStream Aquatics | 03/06/2026 | 2026 CO 14 U Silver State | |
| 2006 | DeMario Cruz-Webb | 39.98 | 9 | BB Min | A: 37.59 (+2.39s | 6.0%) | Saluki Swim Club | 02/27/2026 | Ozark Division I Championship | |
| 2007 | Channing Pepper | 39.98 | 10 | BB Min | A: 37.59 (+2.39s | 6.0%) | Seals Aquatics | 03/07/2026 | Napa Valley Swim Team Swimming Towards Spring | |
| 2008 | John Netsch | 39.99 | 8 | BB Min | A: 37.59 (+2.40s | 6.0%) | Club Wolverine | 03/07/2026 | 2026 Lake Ontario Regional Meet | |
| 2009 | Ari Vora | 39.99 | 10 | BB Min | A: 37.59 (+2.40s | 6.0%) | All Star Aquatics | 03/20/2026 | March Madness 2026 | |
| 2010 | Graham McGuire | 39.99 | 8 | BB Min | A: 37.59 (+2.40s | 6.0%) | Swim Florida | 11/07/2025 | 2025 SYS Turkey Meet | |
| 2011 | Cameron Lane | 40.00 | 10 | BB Min | A: 37.59 (+2.41s | 6.0%) | Tide Swimming | 02/13/2026 | 2026 Southeast District 9 12 Championship | |
| 2012 | Reed Bortner | 40.00 | 10 | BB Min | A: 37.59 (+2.41s | 6.0%) | Fairfax Foxes Swimming | 01/10/2026 | 2026 RAYS Jeff Rouse Invitational | |
| 2013 | Vivaan Jithesh | 40.00 | 10 | BB Min | A: 37.59 (+2.41s | 6.0%) | Nation\\\\\\'s Capital Swim Club | 01/10/2026 | 2026 VSTP Polar Plunge | |
| 2014 | Thomas Kyung | 40.00 | 8 | BB Min | A: 37.59 (+2.41s | 6.0%) | Maywood Sparks Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 2015 | Alfred Mueller | 40.01 | 10 | BB Min | A: 37.59 (+2.42s | 6.0%) | Merritt Athletic Swimming | 12/21/2025 | The Grinch Stole My Times (9 O BB Slowe) 2025 | |
| 2016 | Milo Neumann | 40.01 | 10 | BB Min | A: 37.59 (+2.42s | 6.0%) | High Tides Swim Club | 02/27/2026 | 2026 MN MTKA Minnesota Regional Championship | |
| 2017 | Max Block | 40.01 | 9 | BB Min | A: 37.59 (+2.42s | 6.0%) | Metro Marlins Swim Team | 02/27/2026 | 2026 MN STRM Minnesota Regional Championship | |
| 2018 | James Foster | 40.01 | 9 | BB Min | A: 37.59 (+2.42s | 6.0%) | Aquawolves Swimming | 02/14/2026 | 2026 CO AQUA February Home Meet | |
| 2019 | Harry Gong | 40.01 | 10 | BB Min | A: 37.59 (+2.42s | 6.0%) | Columbia Aquatics Association | 11/14/2025 | GBSA 2025 Thanksgiving Swim Fest | |
| 2020 | Marco Gonzalez | 40.01 | 10 | BB Min | A: 37.59 (+2.42s | 6.0%) | South Bay Aquatics | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 2021 | Adoren Sun | 40.01 | 9 | BB Min | A: 37.59 (+2.42s | 6.0%) | Machine Aquatics | 03/20/2026 | March Madness 2026 | |
| 2022 | Jacob Wills | 40.02 | 10 | BB Min | A: 37.59 (+2.43s | 6.1%) | Bgc-N. Westchester Marlins | 12/05/2025 | 2025 MR BGNW December 14 Under Invitational | |
| 2023 | William Martzke | 40.02 | 10 | BB Min | A: 37.59 (+2.43s | 6.1%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 02/27/2026 | 2026 Junior Cup | |
| 2024 | Sean Broderick | 40.02 | 9 | BB Min | A: 37.59 (+2.43s | 6.1%) | Staten Island Aquatics Club | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 2025 | Warren Gehring | 40.02 | 10 | BB Min | A: 37.59 (+2.43s | 6.1%) | Triton Swimming of Louisville | 01/16/2026 | 2026 HSA TYR Invitational | |
| 2026 | Max Fujino | 40.03 | 10 | BB Min | A: 37.59 (+2.44s | 6.1%) | Splash Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 2027 | Peter Scott | 40.03 | 10 | BB Min | A: 37.59 (+2.44s | 6.1%) | Sleepy Hollow | 11/10/2024 | Fall Jamboree Invitational 2024 | |
| 2028 | Owen Cook | 40.03 | 9 | BB Min | A: 37.59 (+2.44s | 6.1%) | South Central Swimming | 03/07/2026 | 2026 Lake Superior Regional Meet | |
| 2029 | Keaton Tanner | 40.03 | 9 | BB Min | A: 37.59 (+2.44s | 6.1%) | Lynchburg YMCA Swim Team | 03/19/2026 | 2026 USRY Short Course Champs | |
| 2030 | Relja Martic | 40.03 | 10 | BB Min | A: 37.59 (+2.44s | 6.1%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | |
| 2031 | Arwin Safaee | 40.03 | 10 | BB Min | A: 37.59 (+2.44s | 6.1%) | Alto Swim Club | 03/07/2026 | DACA CBA Meet | |
| 2032 | Vincent Nan | 40.03 | 10 | BB Min | A: 37.59 (+2.44s | 6.1%) | Pacific Dragons Swim Team | 01/24/2026 | 2026 PN PDST Winter Invitational Meet Approv | |
| 2033 | Waring Boon | 40.03 | 8 | BB Min | A: 37.59 (+2.44s | 6.1%) | Tac Titans | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 2034 | Sullivan White-Stielstra | 40.04 | 10 | BB Min | A: 37.59 (+2.45s | 6.1%) | San Gabriel Aquatics | 02/06/2026 | 2026 ST AQTX STX Champs North | |
| 2035 | Andrei Sanchez | 40.04 | 10 | BB Min | A: 37.59 (+2.45s | 6.1%) | Island Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 2036 | Yien Dai | 40.04 | 10 | BB Min | A: 37.59 (+2.45s | 6.1%) | Edge Swim Club | 01/30/2026 | 2026 NE UVAC Silvers | |
| 2037 | Marcus Pass | 40.04 | 9 | BB Min | A: 37.59 (+2.45s | 6.1%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | |
| 2038 | Alexander Bicherl | 40.04 | 10 | BB Min | A: 37.59 (+2.45s | 6.1%) | Bluefish Swim Club | 01/30/2026 | 2026 NE UVAC Silvers | |
| 2039 | Kieran Heidtman | 40.04 | 9 | BB Min | A: 37.59 (+2.45s | 6.1%) | Helios | 01/23/2026 | 2026 NC SwimMAC Battle Of The Crown | |
| 2040 | Mason Wong | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | Cavalier Aquatics/Piedmont Fam | 11/08/2025 | CA Y Tri Meet | |
| 2041 | Darren Liu | 40.05 | 9 | BB Min | A: 37.59 (+2.46s | 6.1%) | Asphalt Green Unified Aquatics | 01/17/2026 | 2026 MR AGUA MLK Invitational | |
| 2042 | Mason Murphy | 40.05 | 8 | BB Min | A: 37.59 (+2.46s | 6.1%) | SwimMAC Carolina | 02/14/2026 | 2026 SwimMAC Qualifier Festival | |
| 2043 | Taj Malik | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | Capital of Texas Aquatics | 02/06/2026 | 2026 ST AQTX STX Champs North | |
| 2044 | Barrett Hammond | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | York Swim Club of Northern Vir | 01/17/2026 | PVS January Open 2026 PWCS | |
| 2045 | Charles Dick | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | Sharks Aquatic Club | 03/20/2026 | 2026 BRSL Championships | |
| 2046 | Lathan Su | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 2047 | Henry Chapman | 40.05 | 10 | BB Min | A: 37.59 (+2.46s | 6.1%) | Crawfish Aquatics | 01/16/2026 | 2026 SE Ralph Crocker Classic | |
| 2048 | Callan Burke | 40.06 | 10 | BB Min | A: 37.59 (+2.47s | 6.2%) | Crimson Aquatics | 11/14/2025 | 2025 NE CRIM November Specialty Copied C | |
| 2049 | Wyatt Self | 40.06 | 10 | BB Min | A: 37.59 (+2.47s | 6.2%) | YMCA of the Triangle Area Swim | 03/19/2026 | 2026 USRY Short Course Champs | |
| 2050 | Maddox Merz | 40.07 | 9 | BB Min | A: 37.59 (+2.48s | 6.2%) | Los Gatos Swim Club | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
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.