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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1401 | Leo Zhang | 45.08 | 10 | BB Min | A: 42.09 (+2.99s | 6.6%) | Bayside Branch YMCA | 02/01/2026 | 2026 NE NCYW 36th Annual YMCA Pentathlon | |
| 1402 | Julian Chan | 45.09 | 10 | BB Min | A: 42.09 (+3.00s | 6.7%) | Nitro Swimming | 01/31/2026 | 2026 ST NTRO Fiery Flames | |
| 1403 | Matthew Pelkey | 45.09 | 10 | BB Min | A: 42.09 (+3.00s | 6.7%) | Bolles School Sharks | 10/10/2025 | 2025 October Classic | |
| 1404 | Chayton Zhou | 45.09 | 8 | BB Min | A: 42.09 (+3.00s | 6.7%) | Pleasanton Seahawks | 07/26/2025 | Zone 2 Summer Championships | |
| 1405 | Eric Ruan | 45.10 | 9 | BB Min | A: 42.09 (+3.01s | 6.7%) | South East Metro Sharks | 01/25/2026 | 2026 MN HURR January Invitational | |
| 1406 | Oliver Mearns | 45.10 | 10 | BB Min | A: 42.09 (+3.01s | 6.7%) | Greensboro Community YMCA | 01/23/2026 | GCY Winter Meet 2026 | |
| 1407 | Ian Kang | 45.10 | 10 | BB Min | A: 42.09 (+3.01s | 6.7%) | Punahou Aquatics Institute | 02/08/2026 | Aulea Winter Sprint Festival | |
| 1408 | Nolan Stumpf | 45.11 | 10 | BB Min | A: 42.09 (+3.02s | 6.7%) | Aquajets Swim Team | 05/17/2025 | 2025 MN AQJT May Flowers | |
| 1409 | Christopher Porembka | 45.11 | 8 | BB Min | A: 42.09 (+3.02s | 6.7%) | Fast Fins Elite | 10/19/2024 | 2024 LSST October Open Meet | |
| 1410 | Caeden DaSalla | 45.11 | 10 | BB Min | A: 42.09 (+3.02s | 6.7%) | Long Island Aquatic Club | 12/05/2025 | 2025 MR NYS Holiday Classic Trials Finals | |
| 1411 | Connor Williams | 45.12 | 8 | BB Min | A: 42.09 (+3.03s | 6.7%) | Foxjets Swim Team | 01/30/2026 | 2026 MN MTKA TYR Team Challenge | |
| 1412 | Ryan Hartmann | 45.13 | 9 | BB Min | A: 42.09 (+3.04s | 6.7%) | Lakewood Ranch Swim Associatio | 01/23/2026 | 2026 Hot Chocolate Invite | |
| 1413 | Jaden Tang | 45.13 | 9 | BB Min | A: 42.09 (+3.04s | 6.7%) | Long Island Express | 11/07/2025 | 2025 MR LIE Fall Classic Invitational | |
| 1414 | Kai Jyawook | 45.13 | 10 | BB Min | A: 42.09 (+3.04s | 6.7%) | H2okie Aquatics | 12/04/2025 | 14th Annual Swim Tri Speedo Winter Champs | |
| 1415 | Otto Seeber | 45.14 | 9 | BB Min | A: 42.09 (+3.05s | 6.8%) | Flatiron Athletic Club | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 1416 | Joseph Lin | 45.14 | 10 | BB Min | A: 42.09 (+3.05s | 6.8%) | Madison Swimming Association | 02/06/2026 | 2026 SES Region 3 Champions | |
| 1417 | Zachariah Cornine | 45.15 | 9 | BB Min | A: 42.09 (+3.06s | 6.8%) | South Lake Aquatic Club | 01/30/2026 | 2026 Hydro Winter Open | |
| 1418 | William Moreno | 45.15 | 10 | BB Min | A: 42.09 (+3.06s | 6.8%) | Carolina Aquatic Team | 01/09/2026 | 2026 CAT Frozen Frenzy | |
| 1419 | Charles Doran | 45.15 | 10 | BB Min | A: 42.09 (+3.06s | 6.8%) | Nova of Virginia | 01/09/2026 | NOVA New Year S Kick Off | |
| 1420 | Noah Olusanya | 45.15 | 9 | BB Min | A: 42.09 (+3.06s | 6.8%) | Wahoos of Jacksonville | 01/16/2026 | 2026 Pentathlon | |
| 1421 | Isaiah Williams | 45.16 | 10 | BB Min | A: 42.09 (+3.07s | 6.8%) | Accokeek Stroke Technique Swim | 11/22/2025 | 20205 Odd Ball Challenge | |
| 1422 | Oliver Gist-Pitts | 45.16 | 9 | BB Min | A: 42.09 (+3.07s | 6.8%) | Boulder Swim Team | 03/14/2025 | 2025 CO NJ Mile High Championships | |
| 1423 | Lukas Fort | 45.16 | 8 | BB Min | A: 42.09 (+3.07s | 6.8%) | Bainbridge Island Swim Club | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 1424 | Emrys Davenport | 45.17 | 10 | BB Min | A: 42.09 (+3.08s | 6.8%) | Denver Triton Swim Team | 01/16/2026 | 2026 CO CUDA Classic | |
| 1425 | Logan Dedinsky | 45.17 | 10 | BB Min | A: 42.09 (+3.08s | 6.8%) | Sailfish Swim Club | 10/17/2025 | 2025 USSC Trick Or Treat Grab Bag Classic | |
| 1426 | Joseph Iannuzzi | 45.17 | 10 | BB Min | A: 42.09 (+3.08s | 6.8%) | Long Island Aquatic Club | 01/16/2026 | 2026 MR NFS 43rd Annual Dr MLK Jr Invite | |
| 1427 | Liam Shishko | 45.18 | 10 | BB Min | A: 42.09 (+3.09s | 6.8%) | Life Time Fitness New York Swi | 11/08/2025 | 2025 MR PAC Maria Parmanan Invitational | |
| 1428 | Daniel Reschke | 45.18 | 10 | BB Min | A: 42.09 (+3.09s | 6.8%) | Santa Clara Swim Club | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 1429 | Olaf Kroneman | 45.19 | 10 | BB Min | A: 42.09 (+3.10s | 6.9%) | Atlantis Swimming | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 1430 | Alfred Jaeger | 45.19 | 10 | BB Min | A: 42.09 (+3.10s | 6.9%) | Quest Swimming | 12/05/2025 | NOVA December Dip | |
| 1431 | James Angelos | 45.20 | 9 | BB Min | A: 42.09 (+3.11s | 6.9%) | Eagle Swimming Association | 02/21/2025 | 2025 Gulf 12 Under Champs (TASC) | |
| 1432 | Beck Merkle | 45.20 | 10 | BB Min | A: 42.09 (+3.11s | 6.9%) | Jersey Wahoos | 11/07/2025 | 2025 Mid Atlantic AG Championship Showdown | |
| 1433 | Caleb Shepler | 45.20 | 9 | BB Min | A: 42.09 (+3.11s | 6.9%) | Motor City Aquatics | 02/14/2026 | 2026 Best ValenTimes Meet | |
| 1434 | Alan Li | 45.21 | 10 | BB Min | A: 42.09 (+3.12s | 6.9%) | Tualatin Hills Swim Club | 11/07/2025 | 2025 THSC November Open | |
| 1435 | Caleb Schnobrich | 45.21 | 10 | BB Min | A: 42.09 (+3.12s | 6.9%) | Sailfish | 02/06/2026 | 2026 ST AQTX STX Champs North | |
| 1436 | Cameron Watrous | 45.21 | 8 | BB Min | A: 42.09 (+3.12s | 6.9%) | Bellevue Club Swim Team | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 1437 | Muyang He | 45.21 | 8 | BB Min | A: 42.09 (+3.12s | 6.9%) | Santa Clara Swim Club | 02/08/2025 | Swim South Bay | |
| 1438 | Maxwell Alred | 45.21 | 9 | BB Min | A: 42.09 (+3.12s | 6.9%) | Marshall County Swim Club | 01/16/2026 | 2026 HSA TYR Invitational | |
| 1439 | William MacPhail | 45.22 | 9 | BB Min | A: 42.09 (+3.13s | 6.9%) | Edina Swim Club | 12/12/2025 | 2025 MN SCSC Winter Carnival | |
| 1440 | Aiden Cheung | 45.23 | 10 | BB Min | A: 42.09 (+3.14s | 6.9%) | Sierra Marlins Swim Team | 12/19/2025 | 2025 SI Winter Age Group Championships | |
| 1441 | Caleb Erete | 45.23 | 10 | BB Min | A: 42.09 (+3.14s | 6.9%) | Machine Aquatics | 12/20/2025 | 2025 Splash And Dash | |
| 1442 | Matias Venturino | 45.23 | 8 | BB Min | A: 42.09 (+3.14s | 6.9%) | Rockville Montgomery Swim Club | 11/08/2025 | 2025 Autumn Mini Meet | |
| 1443 | Dmitry Klyukin | 45.23 | 9 | BB Min | A: 42.09 (+3.14s | 6.9%) | Tide Swimming | 11/15/2025 | 2025 WAC Fall Classic | |
| 1444 | Greyson Wolfe | 45.23 | 10 | BB Min | A: 42.09 (+3.14s | 6.9%) | Club Husker | 10/25/2025 | 2025 MW LSS Spooky Splash | |
| 1445 | Henry Ashcroft | 45.24 | 10 | BB Min | A: 42.09 (+3.15s | 7.0%) | Madison Swimming Association | 02/13/2026 | 2026 MSA Last Chance Challenger | |
| 1446 | Luca Strohkirch | 45.24 | 10 | BB Min | A: 42.09 (+3.15s | 7.0%) | Atlantis Swimming | 02/01/2026 | February Closed Invite | |
| 1447 | Jordan Stencel | 45.24 | 11 | BB Min | A: 42.09 (+3.15s | 7.0%) | Hauppauge Swimming | 01/16/2026 | 2026 MR LIE Winterfest Invitational | |
| 1448 | William Sun | 45.25 | 9 | BB Min | A: 42.09 (+3.16s | 7.0%) | Coast Gaurd Blue Dolphins | 12/05/2025 | 2025 757swim Grand Illumination | |
| 1449 | Tyler Clark | 45.25 | 10 | BB Min | A: 42.09 (+3.16s | 7.0%) | Unattached | 01/09/2026 | 2026 IA Midwest All Stars 09Jan2026 Midwestern | |
| 1450 | Timothy Chung | 45.25 | 10 | BB Min | A: 42.09 (+3.16s | 7.0%) | Long Island Aquatic Club | 01/30/2026 | 2026 MR SSC Polar Bear Plunge | |
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.