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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2001 | William Ehrstein | 47.71 | 9 | B Min | BB: 47.69 (+0.02s | 0.0%) | Rockville Montgomery Swim Club | 11/14/2025 | 2025 RMSC November Dual Meet | |
| 2002 | Bryan Xia | 47.71 | 7 | B Min | BB: 47.69 (+0.02s | 0.0%) | Rockville Montgomery Swim Club | 02/14/2026 | 2026 RMSC Gender Blender Mini Meet | |
| 2003 | Zachary Zourdos | 47.72 | 10 | B Min | BB: 47.69 (+0.03s | 0.1%) | SwimFast | 09/06/2025 | Sunrise Swimmng Open Invite | |
| 2004 | Ryden Ciammaichella | 47.72 | 9 | B Min | BB: 47.69 (+0.03s | 0.1%) | Piedmont Swim Team | 05/29/2026 | Piedmont Swim Team Club Championships | |
| 2005 | Kane Sperber | 47.73 | 9 | B Min | BB: 47.69 (+0.04s | 0.1%) | Pacific Swim | 12/05/2025 | 2025 SI JBST Wag Max Meet | |
| 2006 | Keayan Liang | 47.73 | 9 | B Min | BB: 47.69 (+0.04s | 0.1%) | Quince Orchard Swim Academy | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 2007 | Jonathan Wen | 47.73 | 10 | B Min | BB: 47.69 (+0.04s | 0.1%) | Rancho San Dieguito | 01/31/2026 | 2026 SBA All Ages NTS Meet | |
| 2008 | Stuart Franks | 47.74 | 9 | B Min | BB: 47.69 (+0.05s | 0.1%) | Marlins Of Raleigh | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 2009 | Jacob Garcia | 47.74 | 10 | B Min | BB: 47.69 (+0.05s | 0.1%) | Tri City Aquatics | 10/12/2024 | 2024 ST SC BAS Swim Meet October | |
| 2010 | Wyatt White | 47.74 | 10 | B Min | BB: 47.69 (+0.05s | 0.1%) | Poseidon Aquatic Club | 11/16/2025 | 2025 PN PAC Q Meet | |
| 2011 | Derek Folk | 47.74 | 9 | B Min | BB: 47.69 (+0.05s | 0.1%) | Excel Aquatics | 12/05/2025 | 2025 Beaman Toyota Meet Of Champs | |
| 2012 | John Umiker | 47.74 | 10 | B Min | BB: 47.69 (+0.05s | 0.1%) | Pierre Swim Team | 01/30/2026 | 2026 SD Capital City Qualifier | |
| 2013 | Evan Bhandari | 47.75 | 10 | B Min | BB: 47.69 (+0.06s | 0.1%) | Washingtonians Swim Club | 01/31/2026 | The 2026 Super FISH Bowl XVI | |
| 2014 | Arthur Dauletbaev | 47.75 | 9 | B Min | BB: 47.69 (+0.06s | 0.1%) | Wave Aquatics | 01/24/2026 | 2026 PN WAVE Winter Invitational Approved | |
| 2015 | James Lehn | 47.75 | 10 | B Min | BB: 47.69 (+0.06s | 0.1%) | Hastings Y Aquatic Club | 01/24/2026 | 2026 MW LSS Winterfest | |
| 2016 | Thomas Prochazka | 47.75 | 10 | B Min | BB: 47.69 (+0.06s | 0.1%) | East Coast Aquatic Team | 03/28/2026 | ECAT March 2026 Invitational Copied | |
| 2017 | David Mastin | 47.75 | 9 | B Min | BB: 47.69 (+0.06s | 0.1%) | Razor Aquatics | 01/16/2026 | SLA Arctic Blast 2026 | |
| 2018 | Caleb Ingraham | 47.76 | 10 | B Min | BB: 47.69 (+0.07s | 0.1%) | Alamo Area Aquatic Association | 12/12/2025 | 2025 ST AAAA NS Winter Wonderland | |
| 2019 | Christopher Vesbianu | 47.76 | 10 | B Min | BB: 47.69 (+0.07s | 0.1%) | Kingfish Swimming Medfield | 11/01/2025 | 2025 NE NSSC Nov Beede Specialty Copied | |
| 2020 | Fletcher Sumner | 47.77 | 10 | B Min | BB: 47.69 (+0.08s | 0.2%) | Mission Aurora Colorado Swimmi | 03/13/2026 | Mile High Championship Invitational | |
| 2021 | Christopher Wazecha | 47.77 | 10 | B Min | BB: 47.69 (+0.08s | 0.2%) | Bayside Branch YMCA | 03/21/2026 | 2026 NE YNS YMCA New England Championship | |
| 2022 | Leif Rinehardt | 47.77 | 10 | B Min | BB: 47.69 (+0.08s | 0.2%) | Northern Lights Swimming Assoc | 12/13/2025 | 2025 MN NLSA Marlins DECEMBER Invite | |
| 2023 | Francesco Caruana | 47.78 | 10 | B Min | BB: 47.69 (+0.09s | 0.2%) | Farmingdale Aquatics | 11/21/2025 | 2025 MR FA Patriot Games Invitational | |
| 2024 | Eric Wu | 47.78 | 10 | B Min | BB: 47.69 (+0.09s | 0.2%) | Florida Atlantic Aquatics | 01/23/2026 | SPEEDO CUP CLOSED INVITE Copied | |
| 2025 | Brady Burnsky | 47.79 | 7 | B Min | BB: 47.69 (+0.10s | 0.2%) | Rockville Montgomery Swim Club | 02/14/2026 | 2026 RMSC Gender Blender Mini Meet | |
| 2026 | Seojin Lee | 47.79 | 9 | B Min | BB: 47.69 (+0.10s | 0.2%) | Utica Shelby Swim Club | 03/07/2026 | 2026 Lake Huron Regional Meet | |
| 2027 | Haoran Li | 47.79 | 9 | B Min | BB: 47.69 (+0.10s | 0.2%) | SwimMAC Carolina | 03/20/2026 | 2026 SwimMAC Tar Heel States | |
| 2028 | Quinn Katene | 47.80 | 10 | B Min | BB: 47.69 (+0.11s | 0.2%) | Badger Swim Club,Inc. | 11/21/2025 | 2025 MR LIAC Thanksgiving Invite | |
| 2029 | Lucas Richardson | 47.80 | 10 | B Min | BB: 47.69 (+0.11s | 0.2%) | Hawaii Swimming Club | 03/07/2026 | 2026 HI Junior Age Group SCY Championship | |
| 2030 | Declan Wang | 47.80 | 10 | B Min | BB: 47.69 (+0.11s | 0.2%) | Fast Swim Team | 02/16/2024 | 2024 CCS SCY AGC | |
| 2031 | Ata Balikcioglu | 47.81 | 10 | B Min | BB: 47.69 (+0.12s | 0.3%) | Tac Titans | 02/14/2026 | 2026 TAC TITANS February Qualifier Meet | |
| 2032 | Zhencheng Xu | 47.81 | 10 | B Min | BB: 47.69 (+0.12s | 0.3%) | Alto Swim Club | 12/19/2025 | ALTO Candy Cane Classic | |
| 2033 | Ryder Tomita | 47.81 | 10 | B Min | BB: 47.69 (+0.12s | 0.3%) | South Bay Aquatics | 06/14/2026 | 2026 SI SEA 14u Rising Stars 2 Jun 14 | |
| 2034 | Bradley Dillon | 47.82 | 10 | B Min | BB: 47.69 (+0.13s | 0.3%) | Rockville Montgomery Swim Club | 03/20/2026 | 2026 RMSC Spring Finale | |
| 2035 | Ryan Song | 47.82 | 9 | B Min | BB: 47.69 (+0.13s | 0.3%) | Wasc | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 2036 | Ethan Qin | 47.82 | 10 | B Min | BB: 47.69 (+0.13s | 0.3%) | Long Island Aquatic Club | 03/27/2026 | 2026 MR Bronze Championship South LIE | |
| 2037 | Adrian Pasagic | 47.82 | 10 | B Min | BB: 47.69 (+0.13s | 0.3%) | Sporting Jax Aquatic Club | 02/20/2026 | 2026 Area 1 Spring Championships | |
| 2038 | Matthew Weaver | 47.82 | 9 | B Min | BB: 47.69 (+0.13s | 0.3%) | Egra Waves | 03/07/2026 | 2026 Lake Michigan Regional Meet | |
| 2039 | William Fetter | 47.83 | 10 | B Min | BB: 47.69 (+0.14s | 0.3%) | Aquawolves Swimming | 01/04/2026 | 2026 CO AAC Sprint Eliminator Invite | |
| 2040 | Angel Malave | 47.83 | 10 | B Min | BB: 47.69 (+0.14s | 0.3%) | Blue Marlins Of Hialeah Garden | 02/14/2026 | NMST BMHG February BC Invite 26 | |
| 2041 | BaoSheng Wang | 47.83 | 8 | B Min | BB: 47.69 (+0.14s | 0.3%) | San Ramon Valley Aquatics | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 2042 | Ezra Junio | 47.83 | 10 | B Min | BB: 47.69 (+0.14s | 0.3%) | Legacy Aquatics | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 2043 | Liam Ho | 47.83 | 9 | B Min | BB: 47.69 (+0.14s | 0.3%) | First Colony Swim Team, Inc. | 02/21/2025 | 2025 Gulf 12 Under Champs (PACK) | |
| 2044 | Zuriel Cariazo | 47.84 | 10 | B Min | BB: 47.69 (+0.15s | 0.3%) | Screaming Eagle Aquatics | 12/05/2025 | 2025 Holiday Classic | |
| 2045 | Warren Gehring | 47.85 | 10 | B Min | BB: 47.69 (+0.16s | 0.3%) | Triton Swimming of Louisville | 01/16/2026 | 2026 HSA TYR Invitational | |
| 2046 | Evan Doong | 47.86 | 10 | B Min | BB: 47.69 (+0.17s | 0.4%) | Sunnyvale Swim Club | 02/07/2026 | PASA CBA+ SCY Meet Feb 2026 | |
| 2047 | Daniel Poloni | 47.86 | 10 | B Min | BB: 47.69 (+0.17s | 0.4%) | Sea to Desert Swim Association | 11/08/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 2048 | Owen Weber | 47.86 | 10 | B Min | BB: 47.69 (+0.17s | 0.4%) | CAC Stingrays Swim Team | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 2049 | Alex Li | 47.86 | 9 | B Min | BB: 47.69 (+0.17s | 0.4%) | DeAnza Cupertino Aquatics | 03/07/2026 | DACA CBA Meet | |
| 2050 | Ryan Zhang | 47.86 | 9 | B Min | BB: 47.69 (+0.17s | 0.4%) | Tac Titans | 03/25/2026 | 2026 TAC TITANS Tarheel States 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.