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 | |
|---|---|---|---|---|---|---|---|---|---|
| 351 | Liam Dunn | 40.25 | 9 | A Min | AA: 40.19 (+0.06s | 0.1%) | Meadowbrook Swim Team | 03/05/2026 | 2026 MD LSC 14 U Championships | |
| 352 | Peter McCormick | 40.25 | 10 | A Min | AA: 40.19 (+0.06s | 0.1%) | Wahoo Aquatic Club | 03/19/2026 | 2026 NC TAC ESSZ Age Group Sectionals | |
| 353 | Michael Laurence | 40.27 | 9 | A Min | AA: 40.19 (+0.08s | 0.2%) | Gulliver Swim Club | 01/23/2026 | SPEEDO CUP CLOSED INVITE Copied | |
| 354 | Cayden Lin | 40.27 | 10 | A Min | AA: 40.19 (+0.08s | 0.2%) | Rosemead Rapids | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 355 | Dashel Dean | 40.27 | 10 | A Min | AA: 40.19 (+0.08s | 0.2%) | Occoquan Swimming | 12/11/2025 | 2025 East Coast WinterFest | |
| 356 | Jaden Zhao | 40.27 | 10 | A Min | AA: 40.19 (+0.08s | 0.2%) | Jersey Flyers Aquatic Club | 02/06/2026 | 2026 MR COND Last Chance Invitational | |
| 357 | Luca Tricano | 40.28 | 10 | A Min | AA: 40.19 (+0.09s | 0.2%) | Golden West Swim Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 358 | Panagiotis Chatzopoulos | 40.29 | 10 | A Min | AA: 40.19 (+0.10s | 0.2%) | Royal Swimming | 01/31/2026 | 2026 Guppy Bowl | |
| 359 | Baker Lowrance | 40.29 | 10 | A Min | AA: 40.19 (+0.10s | 0.2%) | SwimRVA | 03/12/2026 | 2026 Virginia Swimming SC Age Group Champions | |
| 360 | John Piracci | 40.30 | 9 | A Min | AA: 40.19 (+0.11s | 0.3%) | SwimRVA | 03/20/2026 | 2026 SwimRVA Clover Cup | |
| 361 | Dylan Deahn | 40.32 | 9 | A Min | AA: 40.19 (+0.13s | 0.3%) | Csp Tideriders | 02/27/2026 | Ozark Division I Championship | |
| 362 | Caleb Horvath | 40.32 | 9 | A Min | AA: 40.19 (+0.13s | 0.3%) | Mecklenburg Swim Association | 02/26/2026 | 2026 NCS SC AG CHAMPS | |
| 363 | Everett Muzzarelli | 40.33 | 8 | A Min | AA: 40.19 (+0.14s | 0.3%) | Woodbridge Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 364 | Dexter Danont | 40.33 | 10 | A Min | AA: 40.19 (+0.14s | 0.3%) | Charles River Aquatics | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 365 | Jonah Kasiak | 40.33 | 10 | A Min | AA: 40.19 (+0.14s | 0.3%) | Swimchester Sailfish | 12/05/2025 | 2025 Holiday Classic | |
| 366 | Ashwin Tiwari | 40.33 | 9 | A Min | AA: 40.19 (+0.14s | 0.3%) | Olympic Cascade Aquatics | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 367 | Dean Sutton | 40.34 | 10 | A Min | AA: 40.19 (+0.15s | 0.4%) | East Coast C-Cerpants | 11/14/2025 | ISCA Fall Classic Championship 2025 | |
| 368 | Adrian Tu | 40.34 | 10 | A Min | AA: 40.19 (+0.15s | 0.4%) | Walnut Creek Aquabears | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 369 | Chandler Lourie | 40.34 | 10 | A Min | AA: 40.19 (+0.15s | 0.4%) | Life Time Southeast | 02/27/2026 | 2026 SE Southeastern Winter SC Championships | |
| 370 | Preston Hartley | 40.35 | 10 | A Min | AA: 40.19 (+0.16s | 0.4%) | Swim Columbus Swim Org. | 03/19/2026 | 2026 NC TAC ESSZ Age Group Sectionals | |
| 371 | Sebastian Wassenaar | 40.35 | 10 | A Min | AA: 40.19 (+0.16s | 0.4%) | Asphalt Green Unified Aquatics | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 372 | Dexter LaForce | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | SwimMAC Carolina | 02/14/2026 | 2026 SwimMAC Qualifier Festival | |
| 373 | Benjamin Shen | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | Orinda Aquatics | 12/12/2025 | Winter SC Age Group Championships | |
| 374 | Shunsuke Suzuki | 40.38 | 10 | A Min | AA: 40.19 (+0.19s | 0.5%) | Palo Alto Stanford Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 375 | Justin Zhao | 40.40 | 10 | A Min | AA: 40.19 (+0.21s | 0.5%) | Aquaracers Swim Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 376 | Ryan Chen | 40.40 | 10 | A Min | AA: 40.19 (+0.21s | 0.5%) | DeAnza Cupertino Aquatics | 03/20/2026 | SCY Spring Age Group Championships | |
| 377 | Gilly Luna | 40.40 | 10 | A Min | AA: 40.19 (+0.21s | 0.5%) | Paseo Aquatics Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 378 | Ryan Nesmith | 40.41 | 10 | A Min | AA: 40.19 (+0.22s | 0.5%) | Swim Florida | 02/07/2026 | 2026 GCST WINTER OPEN | |
| 379 | Yining Zhao | 40.41 | 10 | A Min | AA: 40.19 (+0.22s | 0.5%) | Tac Titans | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 380 | Everett Cassidy | 40.42 | 10 | A Min | AA: 40.19 (+0.23s | 0.6%) | Nsea Swim | 02/26/2026 | 2026 NCS SC AG CHAMPS | |
| 381 | William Huang | 40.42 | 8 | A Min | AA: 40.19 (+0.23s | 0.6%) | Charles River Aquatics | 03/13/2026 | 2026 NE CRA End Of Season March Invite | |
| 382 | Jacob Hineman | 40.43 | 10 | A Min | AA: 40.19 (+0.24s | 0.6%) | Northern Dutchess Aquatic Club | 01/31/2026 | 2026 MR MWDA YBAR Sink Or Swim Invitational | |
| 383 | Logan Steele | 40.44 | 10 | A Min | AA: 40.19 (+0.25s | 0.6%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 384 | Hines Butler | 40.45 | 10 | A Min | AA: 40.19 (+0.26s | 0.6%) | Sarasota Sharks | 03/05/2026 | 2026 Florida Swimming FLAGS SOUTH | |
| 385 | Wayne Sun | 40.46 | 10 | A Min | AA: 40.19 (+0.27s | 0.7%) | Katy Aquatic Team For Youth | 02/21/2025 | 2025 Gulf 12 Under Champs (KATY) | |
| 386 | Hopper Clarke | 40.48 | 10 | A Min | AA: 40.19 (+0.29s | 0.7%) | Caldera | 02/14/2025 | 2025 OR HS 5a 4 | |
| 387 | Tristan Keough | 40.48 | 10 | A Min | AA: 40.19 (+0.29s | 0.7%) | YMCA of the Triangle Area Swim | 03/19/2026 | 2026 USRY Short Course Champs | |
| 388 | Jorden Li | 40.50 | 10 | A Min | AA: 40.19 (+0.31s | 0.8%) | Arctic Aquatics | 10/04/2025 | 2025 NE CS Fall Sprints Copied | |
| 389 | Christian Hebron | 40.53 | 9 | A Min | AA: 40.19 (+0.34s | 0.8%) | Prince William Swim Club | 02/13/2026 | 2026 Northern District 12 Under Championship | |
| 390 | Oliver Panofsky | 40.54 | 9 | A Min | AA: 40.19 (+0.35s | 0.9%) | Slo Swim Club Seahawks | 12/19/2025 | 2025 SI Winter Age Group Championships | |
| 391 | Matthew Ko | 40.54 | 10 | A Min | AA: 40.19 (+0.35s | 0.9%) | Aspire Aquatics of Colorado | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 392 | Blake Porteus | 40.54 | 10 | A Min | AA: 40.19 (+0.35s | 0.9%) | Westerville Aquatic Club | 03/12/2026 | 2026 OH SC Junior Championships | |
| 393 | August Baikauskas | 40.54 | 8 | A Min | AA: 40.19 (+0.35s | 0.9%) | Loyola Blakefield Aquatics | 03/05/2026 | 2026 MD LSC 14 U Championships | |
| 394 | Silas Sebera | 40.55 | 9 | A Min | AA: 40.19 (+0.36s | 0.9%) | Nova of Virginia | 12/05/2025 | 2025 757swim Grand Illumination | |
| 395 | Nolan Lu | 40.56 | 10 | A Min | AA: 40.19 (+0.37s | 0.9%) | DeAnza Cupertino Aquatics | 03/07/2026 | DACA CBA Meet | |
| 396 | Ian Jung | 40.56 | 10 | A Min | AA: 40.19 (+0.37s | 0.9%) | Razorback Aquatic Club Aquahaw | 12/05/2025 | 2025 Beaman Toyota Meet Of Champs | |
| 397 | Lincoln Kemp | 40.57 | 10 | A Min | AA: 40.19 (+0.38s | 0.9%) | Nation\\\\\\'s Capital Swim Club | 03/12/2026 | 2026 PV SC 14 Under Championships Copied | |
| 398 | Arthur Pan | 40.57 | 10 | A Min | AA: 40.19 (+0.38s | 0.9%) | Life Time Fitness New York Swi | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 399 | Jaylen Jiang | 40.58 | 10 | A Min | AA: 40.19 (+0.39s | 1.0%) | Harbor Seals | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 400 | Leo Ferrante | 40.60 | 10 | A Min | AA: 40.19 (+0.41s | 1.0%) | Unattached | 02/13/2026 | 2026 Neptune Swimming 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.