USA Boys 10 & under - 50 M 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 801 | CarlosRoberto Andara | 48.12 | 9 | BB Min | A: 43.09 (+5.03s | 10.5%) | Eagle Aquatics | 05/15/2026 | 2026 Gulliver LCM Summer Classic | |
| 802 | Lucas Richardson | 48.12 | 10 | BB Min | A: 43.09 (+5.03s | 10.5%) | Hawaii Swimming Club | 05/02/2026 | Keiko Price Sprint Meet Aloha Mile | |
| 803 | Reean Shen | 48.12 | 10 | BB Min | A: 43.09 (+5.03s | 10.5%) | Pro Swimming | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 804 | Wesley Herro | 48.12 | 10 | BB Min | A: 43.09 (+5.03s | 10.5%) | Blue Dolfins | 05/15/2026 | 2026 PA Long Course Invite | |
| 805 | Jun Lin | 48.13 | 8 | BB Min | A: 43.09 (+5.04s | 10.5%) | Seattle Metropolitan Aquatic C | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 806 | Oliver Song Zhang | 48.13 | 10 | BB Min | A: 43.09 (+5.04s | 10.5%) | Stingray Swim Team | 04/25/2025 | 2025 PN KING Spring Derby | |
| 807 | Leonardo Escobedo Lopez | 48.13 | 9 | BB Min | A: 43.09 (+5.04s | 10.5%) | Tigres Uanl | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 808 | Benjamin Bull | 48.14 | 10 | BB Min | A: 43.09 (+5.05s | 10.5%) | Bellevue Club Swim Team | 05/29/2025 | 2025 IE VS Apple Capital | |
| 809 | Roland Suida | 48.15 | 8 | BB Min | A: 43.09 (+5.06s | 10.5%) | Rogue Rapids | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 810 | Luca Ferraz de Toledo | 48.16 | 6 | BB Min | A: 43.09 (+5.07s | 10.5%) | South East Metro Sharks | 05/08/2026 | 2026 MN STRM Spring Startup | |
| 811 | Ian Zhang | 48.16 | 10 | BB Min | A: 43.09 (+5.07s | 10.5%) | Apex | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 812 | Ari Isis | 48.17 | 9 | BB Min | A: 43.09 (+5.08s | 10.5%) | Hill Country Aquatics | 05/01/2026 | 2026 ST HCA Long Course Invitational | |
| 813 | Joshua Webster | 48.17 | 9 | BB Min | A: 43.09 (+5.08s | 10.5%) | Minnetonka Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 814 | Oskaras Monkelis | 48.18 | 10 | BB Min | A: 43.09 (+5.09s | 10.6%) | West Florida Lightning Aquatic | 05/01/2026 | 2026 WFLA SPRING OPEN | |
| 815 | Sterling Stewart | 48.18 | 10 | BB Min | A: 43.09 (+5.09s | 10.6%) | South Lake Aquatic Club | 05/23/2025 | 2025 Dr Aspi Doctor Memorial Invitational | |
| 816 | William Vaughn | 48.18 | 9 | BB Min | A: 43.09 (+5.09s | 10.6%) | Jupiter Dragons Swim Team | 05/08/2026 | 2026 Wellington May Long Course Meet | |
| 817 | Steven Ibana | 48.18 | 9 | BB Min | A: 43.09 (+5.09s | 10.6%) | Spokane Waves Aquatic Team | 04/25/2026 | 2026 SWAT Spring Fling | |
| 818 | Anthony Ryan | 48.19 | 10 | BB Min | A: 43.09 (+5.10s | 10.6%) | Valley Swim Team Phoenix | 06/14/2024 | 2024 Winchester Long Course Inviational | |
| 819 | Roman Kappa | 48.19 | 8 | BB Min | A: 43.09 (+5.10s | 10.6%) | Lakewood Ranch Swim Associatio | 05/02/2026 | 2026 Sea Dragon May Open | |
| 820 | Watson She | 48.19 | 9 | BB Min | A: 43.09 (+5.10s | 10.6%) | Bellevue Club Swim Team | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 821 | Jaylen Chen | 48.21 | 10 | BB Min | A: 43.09 (+5.12s | 10.6%) | Riptide Swim Team | 07/18/2025 | 2025 MN STRM Minnesota Regional Championship | |
| 822 | Penghao Yu | 48.21 | 10 | BB Min | A: 43.09 (+5.12s | 10.6%) | Santa Clara Swim Club | 07/19/2025 | Santa Clara Valley Splash Block Party | |
| 823 | Daniel Kalinovski | 48.21 | 10 | BB Min | A: 43.09 (+5.12s | 10.6%) | Otter Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | |
| 824 | Lucas Patrick | 48.22 | 10 | BB Min | A: 43.09 (+5.13s | 10.6%) | Highlands Ranch Aquatics | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 825 | Bennett Wood | 48.22 | 10 | BB Min | A: 43.09 (+5.13s | 10.6%) | AquaStorm | 06/13/2025 | 2025 SD Aberdeen Summer High Point Swim Meet | |
| 826 | Benjamin Noorda | 48.25 | 9 | BB Min | A: 43.09 (+5.16s | 10.7%) | Nitro Swimming | 06/08/2025 | 2025 ST TXLA 14 U Sprint Cup | |
| 827 | Fedor Evstigneev | 48.26 | 9 | BB Min | A: 43.09 (+5.17s | 10.7%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 828 | Ruslan Kalinnikov | 48.30 | 8 | BB Min | A: 43.09 (+5.21s | 10.8%) | Olympus Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 829 | Chun Huang | 48.30 | 9 | BB Min | A: 43.09 (+5.21s | 10.8%) | Alamo Area Aquatic Association | 05/16/2025 | 2025 ST AAAA NS Salute To The Troops | |
| 830 | Alex Li | 48.31 | 9 | BB Min | A: 43.09 (+5.22s | 10.8%) | DeAnza Cupertino Aquatics | 05/16/2026 | 2026 DACA LC CBA+ | |
| 831 | Remington Kalicinski | 48.31 | 10 | BB Min | A: 43.09 (+5.22s | 10.8%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 832 | Marcel Sanchez Bannikov | 48.31 | 9 | BB Min | A: 43.09 (+5.22s | 10.8%) | South Florida Aquatic Club | 05/15/2026 | 2026 Gulliver LCM Summer Classic | |
| 833 | Erik Hai | 48.32 | 10 | BB Min | A: 43.09 (+5.23s | 10.8%) | The Claremont Club | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 834 | Alex Liu | 48.32 | 9 | BB Min | A: 43.09 (+5.23s | 10.8%) | Brea Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 835 | Ellis Houghton | 48.34 | 8 | BB Min | A: 43.09 (+5.25s | 10.9%) | Georgia Coastal Aquatic Team | 05/23/2025 | EAJ Mayhem 2025 | |
| 836 | Moss Fano | 48.36 | 9 | BB Min | A: 43.09 (+5.27s | 10.9%) | Team Greenville | 06/12/2025 | Holtrey Summer Classic | |
| 837 | Taeyul Heo | 48.36 | 10 | BB Min | A: 43.09 (+5.27s | 10.9%) | Pleasanton Seahawks | 04/25/2026 | Brentwood Seawolves Long Course C B BB+ | |
| 838 | Matthew Fernandez | 48.36 | 9 | BB Min | A: 43.09 (+5.27s | 10.9%) | Blue Marlins Of Hialeah Garden | 04/18/2026 | SCS Under The Sun Invitational | |
| 839 | Amir Turgunov | 48.37 | 9 | BB Min | A: 43.09 (+5.28s | 10.9%) | Patriot Aquatics | 05/15/2026 | 2026 PA Long Course Invite | |
| 840 | Anton Todd | 48.37 | 10 | BB Min | A: 43.09 (+5.28s | 10.9%) | Pierre Swim Team | 07/18/2025 | 2025 SD State Long Course Meet | |
| 841 | Arjun Jois | 48.38 | 8 | BB Min | A: 43.09 (+5.29s | 10.9%) | Houston Bridge Bats | 06/14/2025 | CCLR CEM Summer Beach Bash LCM Unclassified | |
| 842 | Shu-Cyuan Li | 48.39 | 9 | BB Min | A: 43.09 (+5.30s | 11.0%) | Waterloo Swimming | 04/19/2026 | 2026 ST WLOO Classic | |
| 843 | Isaiah Bridge | 48.40 | 10 | BB Min | A: 43.09 (+5.31s | 11.0%) | Redmond Aquatic Club | 05/08/2026 | Bend Swim Club May Invitational 2026 | |
| 844 | Mars Meihack | 48.41 | 9 | BB Min | A: 43.09 (+5.32s | 11.0%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 845 | Neo Perera | 48.42 | 10 | BB Min | A: 43.09 (+5.33s | 11.0%) | Los Altos Mountain View Aquati | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 846 | Rojan Kundey | 48.44 | 10 | BB Min | A: 43.09 (+5.35s | 11.0%) | Monocacy Aquatic Club | 06/14/2024 | 2024 Winchester Long Course Inviational | |
| 847 | Ian Chan | 48.45 | 10 | BB Min | A: 43.09 (+5.36s | 11.1%) | Trident Aquatic Club | 08/06/2025 | 2025 Summer Elite Showcase | |
| 848 | Ayu Shaik | 48.45 | 10 | BB Min | A: 43.09 (+5.36s | 11.1%) | Apex | 04/17/2026 | 2026 MAC LONG COURSE INVITATIONAL | |
| 849 | Jasper Zhong | 48.47 | 8 | BB Min | A: 43.09 (+5.38s | 11.1%) | Seattle Metropolitan Aquatic C | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 850 | Lawson Kroon | 48.47 | 9 | BB Min | A: 43.09 (+5.38s | 11.1%) | Pierre Swim Team | 06/28/2025 | 2025 SD Summer Starter | |
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.