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 | |
|---|---|---|---|---|---|---|---|---|---|
| 3401 | Jonathan Chen | 55.60 | 9 | B: 55.39 (+0.21s | 0.4%) | California Dolphins Swim Team | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | ||
| 3402 | Benjamin Furtado Fernandes | 55.61 | 10 | B: 55.39 (+0.22s | 0.4%) | YMCA of South Florida | 06/06/2026 | 18th Annual LC NPB Summer Kickoff | ||
| 3403 | Aariv Sharma | 55.61 | 10 | B: 55.39 (+0.22s | 0.4%) | YMCA of the Triangle Area Swim | 04/24/2026 | 2026 RSA Warm Up To LC Copied Copied | ||
| 3404 | Marcus Chui | 55.61 | 9 | B: 55.39 (+0.22s | 0.4%) | South San Francisco Aquatics | 05/02/2026 | Alto Spring Jam CBA | ||
| 3405 | Reid Hilk | 55.61 | 10 | B: 55.39 (+0.22s | 0.4%) | Aquajets Swim Team | 06/05/2026 | 2026 MN NSAC Summer Invite | ||
| 3406 | Callahan Ford | 55.61 | 9 | B: 55.39 (+0.22s | 0.4%) | Evergreen Hurricanes | 05/16/2025 | 2025 CO NJ Ken Kelley Invite | ||
| 3407 | Sam Zhang | 55.61 | 8 | B: 55.39 (+0.22s | 0.4%) | Otter Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | ||
| 3408 | Noah Attia | 55.62 | 9 | B: 55.39 (+0.23s | 0.4%) | Diablo Aquatics | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | ||
| 3409 | Emiliano Chaparro | 55.62 | 10 | B: 55.39 (+0.23s | 0.4%) | Wild West Aquatic Club | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | ||
| 3410 | Angus McInnes | 55.62 | 10 | B: 55.39 (+0.23s | 0.4%) | The Dalles Swim Team | 06/20/2025 | 72nd Annual Ted Walker Invitational | ||
| 3411 | Tyler Mirasol | 55.63 | 9 | B: 55.39 (+0.24s | 0.4%) | Quicksilver Swimming | 06/28/2024 | 2024 Valley Splash Zone 1S LCM C B A+ | ||
| 3412 | Raymond Fox | 55.63 | 9 | B: 55.39 (+0.24s | 0.4%) | Area Tallahassee Aquatic Club | 04/11/2026 | CAT5 LC Open 2026 | ||
| 3413 | Nolan Wilson | 55.63 | 8 | B: 55.39 (+0.24s | 0.4%) | Parkway-Rockwood Gateway Swim | 05/29/2026 | 2026 Meet Me In St Louis Invite | ||
| 3414 | Reece McCormick | 55.64 | 9 | B: 55.39 (+0.25s | 0.4%) | Harbor Aquatics Club | 05/28/2026 | 2026 IE VS Apple Capital | ||
| 3415 | Kyren Lizardo | 55.64 | 9 | B: 55.39 (+0.25s | 0.4%) | Lifetime | 04/24/2026 | 2026 NE NSSC 4 24 26 Specialty Meet | ||
| 3416 | Xavier Loose-Paul | 55.64 | 7 | B: 55.39 (+0.25s | 0.4%) | Greater Tampa Swim Association | 06/05/2026 | 2026 TAMPA BAY SWIM CLASSIC | ||
| 3417 | Banyan Collins | 55.66 | 7 | B: 55.39 (+0.27s | 0.5%) | Sun Coast Swim Team | 05/30/2026 | Stingrays Summer Sizzle | ||
| 3418 | Ford Fisher | 55.66 | 9 | B: 55.39 (+0.27s | 0.5%) | Univ. of Denver Hilltoppers | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | ||
| 3419 | Alexander Tallon | 55.66 | 10 | B: 55.39 (+0.27s | 0.5%) | Triton Swimming of Louisville | 05/15/2026 | 2026 Triton Summer Launch | ||
| 3420 | Sol Sharpe | 55.67 | 8 | B: 55.39 (+0.28s | 0.5%) | Tornadoes Swim Club | 04/11/2025 | 2025 GCST Spring Invite | ||
| 3421 | Maddox Dudley | 55.68 | 8 | B: 55.39 (+0.29s | 0.5%) | EL Paso Border Land Swim Team | 06/28/2024 | 2024 EPAP Jack White Classic | ||
| 3422 | Artem Ivanitskiy | 55.68 | 10 | B: 55.39 (+0.29s | 0.5%) | Palo Alto Stanford Aquatics | 05/16/2026 | 2026 DACA LC CBA+ | ||
| 3423 | Samuel Ewing | 55.69 | 10 | B: 55.39 (+0.30s | 0.5%) | Team Vortex | 05/02/2026 | 2026 CO Longmont IMR IMX Adrenaline Gauntlet | ||
| 3424 | Caleb Robinson | 55.69 | 10 | B: 55.39 (+0.30s | 0.5%) | YMCA of Central Massachusetts | 04/26/2026 | 2026 NE RIAC Quahog Cup | ||
| 3425 | Daniel Rumiantcev | 55.69 | 10 | B: 55.39 (+0.30s | 0.5%) | Sunnyvale Swim Club | 06/07/2024 | DACA LC C B A+ Meet | ||
| 3426 | David Smith | 55.70 | 10 | B: 55.39 (+0.31s | 0.6%) | Surge Aquatics | 05/15/2026 | 2026 ST SRG LCM Bud Dallmann Memorial | ||
| 3427 | Austin Adler | 55.70 | 9 | B: 55.39 (+0.31s | 0.6%) | Lake Oswego Swim Club | 06/06/2025 | 2025 THSC June Invitational | ||
| 3428 | Jamison Johnson | 55.70 | 10 | B: 55.39 (+0.31s | 0.6%) | Rowan Aquatic Club - YMCA | 06/12/2026 | 2026 GCY Sprint And Distance | ||
| 3429 | Aidan Hodges | 55.70 | 9 | B: 55.39 (+0.31s | 0.6%) | Unattached | 04/17/2026 | 1st Annual SAW Vs Streamline Fiesta Showdown | ||
| 3430 | Carter McGroarty | 55.72 | 9 | B: 55.39 (+0.33s | 0.6%) | Nova of Virginia | 07/11/2024 | 2024 RAYS Summer Awards | ||
| 3431 | Be'eri Afanzar | 55.73 | 10 | B: 55.39 (+0.34s | 0.6%) | Palo Alto Stanford Aquatics | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | ||
| 3432 | Ezra Brickman | 55.74 | 9 | B: 55.39 (+0.35s | 0.6%) | Rhode Island Aquatic Club | 05/30/2026 | 2026 NE RIAC Sail Away On The Ferry | ||
| 3433 | Nathaniel Hernandez Gomez | 55.74 | 10 | B: 55.39 (+0.35s | 0.6%) | Central Coast Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | ||
| 3434 | Cody Preikschas | 55.75 | 9 | B: 55.39 (+0.36s | 0.6%) | Area Tallahassee Aquatic Club | 06/06/2025 | 2025 MAKOS Summer Splash | ||
| 3435 | Bruce Neilsen | 55.75 | 7 | B: 55.39 (+0.36s | 0.6%) | Lehi Aquatics | 06/21/2025 | 2025 UT HAST RWB BC Medals Meet | ||
| 3436 | Remington Heflin | 55.76 | 9 | B: 55.39 (+0.37s | 0.7%) | Corpus Christi Laredo Del Rio | 06/13/2026 | 2026 ST CCLR Summer Beach Bash LCM | ||
| 3437 | Liam Nye | 55.77 | 10 | B: 55.39 (+0.38s | 0.7%) | Unattached | 06/20/2025 | 2025 Planet Swim Summer Championships | ||
| 3438 | Beckett Smith | 55.77 | 10 | B: 55.39 (+0.38s | 0.7%) | Kceoc Aquatic Club | 06/13/2026 | 2026 BSC Model City Invitational | ||
| 3439 | Alan Hu | 55.77 | 8 | B: 55.39 (+0.38s | 0.7%) | Blazing Barracudas | 06/07/2025 | 2025 NCAT Summer Swimfest | ||
| 3440 | Clayton Smithers | 55.77 | 9 | B: 55.39 (+0.38s | 0.7%) | University City Swim Club | 06/26/2026 | 88th CSP Summer Invitational | ||
| 3441 | Anthony He | 55.78 | 9 | B: 55.39 (+0.39s | 0.7%) | Crimson Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | ||
| 3442 | Orion Grapsas | 55.80 | 9 | B: 55.39 (+0.41s | 0.7%) | Upper Valley Aquatic Club | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | ||
| 3443 | Sohum Jain | 55.81 | 10 | B: 55.39 (+0.42s | 0.8%) | Sunrise Swim Club | 05/01/2026 | 2026 NE SUN Leap Into Long Course | ||
| 3444 | Dylan Guo | 55.81 | 9 | B: 55.39 (+0.42s | 0.8%) | South Snohomish Co Dolphins | 05/29/2026 | 2026 TRI CITY INVITATIONAL | ||
| 3445 | Adam Kao | 55.82 | 10 | B: 55.39 (+0.43s | 0.8%) | Life Time Oregon Swim Team | 05/02/2025 | 2025 AAA May LC Invitational | ||
| 3446 | Matvey Molchanov | 55.82 | 10 | B: 55.39 (+0.43s | 0.8%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | ||
| 3447 | Evan Chang | 55.83 | 9 | B: 55.39 (+0.44s | 0.8%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | ||
| 3448 | Edson Barbosa Silva | 55.83 | 9 | B: 55.39 (+0.44s | 0.8%) | Weymouth Club Waves | 06/26/2026 | 2026 NE YNS June Prelims Finals Meet | ||
| 3449 | Sanay Naik | 55.86 | 9 | B: 55.39 (+0.47s | 0.8%) | Life Time Minnesota Swim Team | 06/05/2026 | 2026 MN NSAC Summer Invite | ||
| 3450 | Aiden Bain | 55.86 | 6 | B: 55.39 (+0.47s | 0.8%) | Blue Waves Swim Club | 04/11/2026 | 2026 Fox April Long Course Invitational | ||
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.