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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1951 | Chen Lin | 39.89 | 9 | BB Min | A: 37.59 (+2.30s | 5.8%) | Gator Swim Club | 02/28/2026 | 2026 Area 4 Spring Champs | |
| 1952 | Michael Evans | 39.89 | 10 | BB Min | A: 37.59 (+2.30s | 5.8%) | Sea Dragon Aquatics | 03/26/2026 | Destination Athlete Centennial Invite 2026 | |
| 1953 | Kaiden Iino | 39.89 | 10 | BB Min | A: 37.59 (+2.30s | 5.8%) | South Florida Aquatic Club | 02/20/2026 | 2026 FG SCY BB Championships SOUTH | |
| 1954 | Sebastian Garcia | 39.89 | 10 | BB Min | A: 37.59 (+2.30s | 5.8%) | Rockville Montgomery Swim Club | 10/17/2025 | 2025 RMSC October Kick Off Classic | |
| 1955 | Elliot Aizer | 39.89 | 10 | BB Min | A: 37.59 (+2.30s | 5.8%) | Carolina Aquatics Swim Club | 12/12/2025 | 2025 NC QCD Holiday Invite | |
| 1956 | Dean Tario | 39.89 | 8 | BB Min | A: 37.59 (+2.30s | 5.8%) | FMC Aquatic | 12/11/2025 | 35th Annual Winter Championships | |
| 1957 | August McGuire | 39.89 | 8 | BB Min | A: 37.59 (+2.30s | 5.8%) | Club Wolverine | 03/07/2026 | 2026 Lake Ontario Regional Meet | |
| 1958 | Isaac Dowling | 39.89 | 10 | BB Min | A: 37.59 (+2.30s | 5.8%) | Unattached | 01/09/2026 | 2026 IA Midwest All Stars 09Jan2026 Midwestern | |
| 1959 | Jack Cleary | 39.89 | 9 | BB Min | A: 37.59 (+2.30s | 5.8%) | Machine Aquatics | 02/20/2026 | 2026 Machine Qualifier | |
| 1960 | Lucca Belluco | 39.89 | 9 | BB Min | A: 37.59 (+2.30s | 5.8%) | Marlins Of Raleigh | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 1961 | Jason Wang | 39.90 | 10 | BB Min | A: 37.59 (+2.31s | 5.8%) | Bellingham Bay Swim Team | 03/28/2026 | 2026 PN Spring Showdown, Div 3 Approved | |
| 1962 | Blake Sellers | 39.90 | 10 | BB Min | A: 37.59 (+2.31s | 5.8%) | Excel Aquatics | 11/07/2025 | TNAQ 2025 FALL INVITATIONAL | |
| 1963 | Rainan Joshi | 39.90 | 9 | BB Min | A: 37.59 (+2.31s | 5.8%) | Columbia Aquatics Association | 12/04/2025 | 2025 Sport Fair Winter Classic | |
| 1964 | Owen Morton | 39.90 | 10 | BB Min | A: 37.59 (+2.31s | 5.8%) | Tri-city Channel Cats | 01/03/2026 | January Storm | |
| 1965 | Gavin Yin | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | Austin Swim Club | 01/09/2026 | 2026 ST TXLA New Year S Classic Invite | |
| 1966 | Van Yetter | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | T2 Aquatics | 02/07/2026 | 2026 GCST WINTER OPEN | |
| 1967 | Jacob Akerley | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | Rocky Mountain Rapids | 03/06/2026 | 2026 CO 14 U Silver State | |
| 1968 | Levi McCloy | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | High Performance Aquatic Club | 02/13/2026 | 2026 ST HPAC STX Champs South | |
| 1969 | William Yiengst | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | Machine Aquatics | 10/18/2025 | 2025 NCAP Autumn Kingfish Splash | |
| 1970 | Graham Nagtzaam | 39.91 | 10 | BB Min | A: 37.59 (+2.32s | 5.8%) | Potomac Marlins | 12/04/2025 | 2025 Sport Fair Winter Classic | |
| 1971 | Connor Dudley | 39.92 | 10 | BB Min | A: 37.59 (+2.33s | 5.8%) | Madison Swim Club Inc. | 01/31/2026 | 2026 SD SSC Southwest Splash | |
| 1972 | Harrison Wu | 39.92 | 8 | BB Min | A: 37.59 (+2.33s | 5.8%) | Long Island Aquatic Club | 01/16/2026 | 2026 MR NFS 43rd Annual Dr MLK Jr Invite | |
| 1973 | Adam Ma | 39.92 | 10 | BB Min | A: 37.59 (+2.33s | 5.8%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 1974 | Caius Corley | 39.92 | 10 | BB Min | A: 37.59 (+2.33s | 5.8%) | North Baltimore Aquatic Club | 11/14/2025 | 2025 NBAC Thanksgiving Meet | |
| 1975 | Ren Yu | 39.92 | 10 | BB Min | A: 37.59 (+2.33s | 5.8%) | Asphalt Green Unified Aquatics | 03/07/2026 | 2026 MR AGUA Last Chance Invitational | |
| 1976 | Ryan Bascon | 39.92 | 10 | BB Min | A: 37.59 (+2.33s | 5.8%) | Team Suffolk | 01/09/2026 | 2026 MR TVSC TJ Kelly Memorial Joust | |
| 1977 | Matthew Monroe | 39.93 | 10 | BB Min | A: 37.59 (+2.34s | 5.9%) | Rockville Montgomery Swim Club | 03/20/2026 | 2026 RMSC Spring Finale | |
| 1978 | Everett Chery-Hise | 39.93 | 9 | BB Min | A: 37.59 (+2.34s | 5.9%) | Loyola Blakefield Aquatics | 03/13/2026 | 2026 Speedo Maryland Junior Championship Si | |
| 1979 | Vinh Bui | 39.93 | 10 | BB Min | A: 37.59 (+2.34s | 5.9%) | Excel Aquatics | 02/21/2026 | 2026 SES Region 1 8 And Under Championships | |
| 1980 | Evan Tomizawa | 39.93 | 10 | BB Min | A: 37.59 (+2.34s | 5.9%) | Kamehameha Swim Club | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 1981 | Clark Peterson | 39.94 | 9 | BB Min | A: 37.59 (+2.35s | 5.9%) | Tide Swimming | 02/13/2026 | 2026 Southeast District 9 12 Championship | |
| 1982 | Bennett Peiffer | 39.94 | 9 | BB Min | A: 37.59 (+2.35s | 5.9%) | Pacific Piranha Swim Team | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 1983 | Jack Hallermann | 39.94 | 10 | BB Min | A: 37.59 (+2.35s | 5.9%) | Velocity Aquatics | 02/27/2026 | 2026 MN STRM Minnesota Regional Championship | |
| 1984 | Micah Balmaceda | 39.94 | 10 | BB Min | A: 37.59 (+2.35s | 5.9%) | Commonwealth Swimming | 12/11/2025 | 2025 NE SHAWMUT Candy Cane Classic | |
| 1985 | Hudson Porter | 39.94 | 9 | BB Min | A: 37.59 (+2.35s | 5.9%) | Wave Aquatics | 03/28/2026 | 2026 PN Spring Showdown, Div 4 Approved | |
| 1986 | Seth Overstreet | 39.95 | 10 | BB Min | A: 37.59 (+2.36s | 5.9%) | Quest Swimming | 10/11/2025 | 2025 WAC Start Up Classic | |
| 1987 | Evans Skinner | 39.95 | 10 | BB Min | A: 37.59 (+2.36s | 5.9%) | Barracuda Swim Club of Northea | 02/13/2026 | 2026 SE BAY Region 2 Championships Copied | |
| 1988 | John Tikhonov | 39.95 | 10 | BB Min | A: 37.59 (+2.36s | 5.9%) | Matchpoint Nyc | 02/07/2026 | 2026 MR FREE Championships Meets Qualifier | |
| 1989 | Wyatt Flynn | 39.95 | 10 | BB Min | A: 37.59 (+2.36s | 5.9%) | Raleigh Swimming Association | 03/26/2026 | 2026 NCAC Spring Tar Heel States Copied | |
| 1990 | Victor Varga | 39.95 | 9 | BB Min | A: 37.59 (+2.36s | 5.9%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 1991 | Charles Niessner | 39.95 | 10 | BB Min | A: 37.59 (+2.36s | 5.9%) | Mecklenburg Swim Association | 01/17/2026 | 2026 MSA January Invite | |
| 1992 | Calvin Larkin | 39.96 | 9 | BB Min | A: 37.59 (+2.37s | 5.9%) | Bend Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 1993 | Javi Espinosa | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Metro Aquatic Club of Miami | 02/14/2026 | NMST BMHG February BC Invite 26 | |
| 1994 | Jaafar Lahmidi | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Foothills Swim Team | 01/16/2026 | 2026 CO CUDA Classic | |
| 1995 | Anthony Militano | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Empire Swimming | 12/06/2025 | 2025 MR PAC 12 U Holiday Invitational | |
| 1996 | Noah Chiu | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
| 1997 | Hordii Baranov | 39.96 | 7 | BB Min | A: 37.59 (+2.37s | 5.9%) | Machine Aquatics | 03/20/2026 | March Madness 2026 | |
| 1998 | Oliver McKee | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Cincinnati Aquatic Club | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1999 | Samuel Zvenigorodskiy | 39.96 | 10 | BB Min | A: 37.59 (+2.37s | 5.9%) | Jcc Sea Serpents | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 2000 | Yihong Xiang | 39.97 | 10 | BB Min | A: 37.59 (+2.38s | 6.0%) | Tualatin Hills Swim Club | 12/05/2025 | 2025 Tualatin Hills Holiday Classic | |
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.