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 | |
|---|---|---|---|---|---|---|---|---|---|
| 301 | Dashel Dean | 40.27 | 10 | A Min | AA: 40.19 (+0.08s | 0.2%) | Occoquan Swimming | 12/11/2025 | 2025 East Coast WinterFest | |
| 302 | 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 | |
| 303 | 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 | |
| 304 | 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 | |
| 305 | Panagiotis Chatzopoulos | 40.29 | 10 | A Min | AA: 40.19 (+0.10s | 0.2%) | Royal Swimming | 01/31/2026 | 2026 Guppy Bowl | |
| 306 | Charles Li | 40.31 | 10 | A Min | AA: 40.19 (+0.12s | 0.3%) | Zone 1 North All Stars | 05/18/2025 | 2025 Pacific Swimming Zone All Star Meet | |
| 307 | Duke Diab | 40.33 | 11 | A Min | AA: 40.19 (+0.14s | 0.3%) | Condors Swim Club | 02/06/2026 | 2026 MR COND Last Chance Invitational | |
| 308 | 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 | |
| 309 | Jonah Kasiak | 40.33 | 10 | A Min | AA: 40.19 (+0.14s | 0.3%) | Swimchester Sailfish | 12/05/2025 | 2025 Holiday Classic | |
| 310 | 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 | |
| 311 | Aaron Cho | 40.34 | 8 | A Min | AA: 40.19 (+0.15s | 0.4%) | Klg Sports Swim Team | 03/14/2024 | 2024 SCS Spring Age Group Champshipson | |
| 312 | Abraham Cheng | 40.35 | 9 | A Min | AA: 40.19 (+0.16s | 0.4%) | Aquazot Swim Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 313 | Kai Jo | 40.35 | 10 | A Min | AA: 40.19 (+0.16s | 0.4%) | Punahou Aquatics Institute | 10/25/2025 | 2025 HI 25th Annual Bill Smith Invitational | |
| 314 | Dexter LaForce | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | SwimMAC Carolina | 02/14/2026 | 2026 SwimMAC Qualifier Festival | |
| 315 | Landon Alamo | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | Tac Titans | 01/16/2026 | 2026 Vector Security Polar Plunge Meet | |
| 316 | Benjamin Shen | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | Orinda Aquatics | 12/12/2025 | Winter SC Age Group Championships | |
| 317 | Emmett Curry | 40.37 | 10 | A Min | AA: 40.19 (+0.18s | 0.4%) | Seattle Metropolitan Aquatic C | 12/12/2025 | 2025 PN 14 Under Short Course Champs APPROVED | |
| 318 | Austin Shillman | 40.38 | 10 | A Min | AA: 40.19 (+0.19s | 0.5%) | Pine Crest Swimming | 02/06/2026 | 2026 Matt Mounts Memorial Swim Meet | |
| 319 | Roman Euseppi | 40.38 | 10 | A Min | AA: 40.19 (+0.19s | 0.5%) | North Palm Beach Swim Club | 11/21/2025 | 2025 NPB Turkey Invite | |
| 320 | Kamdyn Lemke | 40.38 | 10 | A Min | AA: 40.19 (+0.19s | 0.5%) | Amherst Tritons Swim Team | 01/09/2026 | 2026 NE CRIM Jan Team Specialty | |
| 321 | 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 | |
| 322 | Ryan Nesmith | 40.41 | 10 | A Min | AA: 40.19 (+0.22s | 0.5%) | Swim Florida | 02/07/2026 | 2026 GCST WINTER OPEN | |
| 323 | Lucas Akinc | 40.41 | 10 | A Min | AA: 40.19 (+0.22s | 0.5%) | Marlins Of Raleigh | 01/16/2026 | 2026 RSA Winter Tri | |
| 324 | Thomas Nash | 40.42 | 9 | A Min | AA: 40.19 (+0.23s | 0.6%) | Coast Gaurd Blue Dolphins | 01/09/2026 | 2026 757swim Splash And Dash | |
| 325 | 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 | |
| 326 | Lucas Ai | 40.43 | 11 | A Min | AA: 40.19 (+0.24s | 0.6%) | Amherst Tritons Swim Team | 12/11/2025 | 2025 NE SHAWMUT Candy Cane Classic | |
| 327 | Nathan Cho | 40.44 | 10 | A Min | AA: 40.19 (+0.25s | 0.6%) | SwimRVA | 01/24/2026 | 2026 WAC Mike Willard Polar Plunge | |
| 328 | 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 | |
| 329 | Caleb Griffith | 40.44 | 10 | A Min | AA: 40.19 (+0.25s | 0.6%) | Nation\\\\\\'s Capital Swim Club | 12/11/2025 | 2025 Katie Ledecky Invitational | |
| 330 | Ethan Qu | 40.45 | 10 | A Min | AA: 40.19 (+0.26s | 0.6%) | Santa Clara Swim Club | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 331 | Wayne Sun | 40.46 | 9 | A Min | AA: 40.19 (+0.27s | 0.7%) | Katy Aquatic Team For Youth | 02/21/2025 | 2025 Gulf 12 Under Champs (KATY) | |
| 332 | Callen Merritt | 40.46 | 10 | A Min | AA: 40.19 (+0.27s | 0.7%) | Carolina Aquatic Team | 02/14/2026 | 2026 CAT Valentine Splash | |
| 333 | Samuel Zhang | 40.47 | 10 | A Min | AA: 40.19 (+0.28s | 0.7%) | Brea Aquatics | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 334 | Silas Rowe | 40.47 | 10 | A Min | AA: 40.19 (+0.28s | 0.7%) | Excel Aquatics | 12/05/2025 | 2025 Beaman Toyota Meet Of Champs | |
| 335 | Hopper Clarke | 40.48 | 9 | A Min | AA: 40.19 (+0.29s | 0.7%) | Caldera | 02/14/2025 | 2025 OR HS 5a 4 | |
| 336 | Jorden Li | 40.50 | 9 | A Min | AA: 40.19 (+0.31s | 0.8%) | Arctic Aquatics | 10/04/2025 | 2025 NE CS Fall Sprints Copied | |
| 337 | Brett Baker | 40.51 | 10 | A Min | AA: 40.19 (+0.32s | 0.8%) | Burlingame Aquatics | 01/10/2026 | BAC Norman Cutler Memorial | |
| 338 | Jason Yin | 40.52 | 9 | A Min | AA: 40.19 (+0.33s | 0.8%) | Quicksilver Swimming | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 339 | 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 | |
| 340 | Chandler Lourie | 40.54 | 10 | A Min | AA: 40.19 (+0.35s | 0.9%) | Life Time Southeast | 02/06/2026 | 2026 SES Region 3 Champions | |
| 341 | William Ying | 40.54 | 9 | A Min | AA: 40.19 (+0.35s | 0.9%) | Katy Aquatic Team For Youth | 10/25/2024 | 2024 TWST Halloween Meet | |
| 342 | Silas Sebera | 40.55 | 9 | A Min | AA: 40.19 (+0.36s | 0.9%) | Nova of Virginia | 12/05/2025 | 2025 757swim Grand Illumination | |
| 343 | Aiden Rawiopab | 40.56 | 11 | A Min | AA: 40.19 (+0.37s | 0.9%) | Twisters Swim Club | 01/24/2026 | 2026 MR FLY Fran Schnarr Sprint Pentathlon Me | |
| 344 | 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 | |
| 345 | Joji Kinebuchi | 40.57 | 10 | A Min | AA: 40.19 (+0.38s | 0.9%) | Fog City Hammerheads | 10/11/2025 | SSF October Splash C B A+ Meet | |
| 346 | Aaron Gilkis | 40.58 | 10 | A Min | AA: 40.19 (+0.39s | 1.0%) | North Baltimore Aquatic Club | 11/14/2025 | 2025 NBAC Thanksgiving Meet | |
| 347 | Leo Ferrante | 40.60 | 10 | A Min | AA: 40.19 (+0.41s | 1.0%) | Unattached | 02/13/2026 | 2026 Neptune Swimming Invitational | |
| 348 | Gavin Floyd | 40.62 | 10 | A Min | AA: 40.19 (+0.43s | 1.1%) | Rockville Montgomery Swim Club | 10/17/2025 | 2025 RMSC October Kick Off Classic | |
| 349 | Luke Marek | 40.62 | 10 | A Min | AA: 40.19 (+0.43s | 1.1%) | Surge Aquatics | 02/13/2026 | 2026 ST HPAC STX Champs South | |
| 350 | Ethan Kuang | 40.63 | 10 | A Min | AA: 40.19 (+0.44s | 1.1%) | Mei\\\\\\'s Typhoons Swimming Club | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
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.