USA Boys 10 & under - 50 M 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 401 | William Yangli | 47.70 | 10 | A Min | AA: 45.79 (+1.91s | 4.0%) | Rose Bowl Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 402 | Grayson Sawicki | 47.70 | 9 | A Min | AA: 45.79 (+1.91s | 4.0%) | Commonwealth Swimming | 07/31/2026 | 2026 NE CS New England Summer Championship | |
| 403 | Yanbo Li | 47.71 | 9 | A Min | AA: 45.79 (+1.92s | 4.0%) | Bolles School Sharks | 04/10/2026 | 2026 April Classic | |
| 404 | AJ Li | 47.71 | 9 | A Min | AA: 45.79 (+1.92s | 4.0%) | Crimson Aquatics | 07/17/2026 | 2026 NE MST ESC LCM 12 Under Championship | |
| 405 | Tyler Zhu | 47.71 | 10 | A Min | AA: 45.79 (+1.92s | 4.0%) | Arctic Aquatics | 04/11/2026 | 2026 NE CS Season Opener | |
| 406 | Leo Groneck | 47.72 | 10 | A Min | AA: 45.79 (+1.93s | 4.0%) | Northern KY Clippers | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 407 | Grant Haire | 47.73 | 10 | A Min | AA: 45.79 (+1.94s | 4.1%) | Worthington Swim Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 408 | Austin Mitchell | 47.75 | 10 | A Min | AA: 45.79 (+1.96s | 4.1%) | Valley Aquatics | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 409 | Jack Macaluso | 47.76 | 10 | A Min | AA: 45.79 (+1.97s | 4.1%) | Tampa Elite Aquatics | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 410 | Clayton Chester | 47.76 | 10 | A Min | AA: 45.79 (+1.97s | 4.1%) | Heartland Swim Assoc | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 411 | Cash Bailey | 47.76 | 10 | A Min | AA: 45.79 (+1.97s | 4.1%) | Excel Aquatics | 06/04/2026 | 2026 Beaman Toyota Firecracker Invite | |
| 412 | Owen Schulte | 47.76 | 10 | A Min | AA: 45.79 (+1.97s | 4.1%) | South Shore Sails | 07/16/2025 | 2025 Texas Age Group Championships | |
| 413 | Hudson Austin | 47.79 | 10 | A Min | AA: 45.79 (+2.00s | 4.2%) | Bolles School Sharks | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 414 | Angel Cordero | 47.81 | 10 | A Min | AA: 45.79 (+2.02s | 4.2%) | Equipo Natacion Encantada | 05/01/2026 | Jesse Vasallo Swimming Invitational | |
| 415 | David Xiong | 47.82 | 8 | A Min | AA: 45.79 (+2.03s | 4.2%) | Arctic Aquatics | 06/26/2026 | 2026 NE MST ESC June Memorial | |
| 416 | Caleb Lee | 47.82 | 10 | A Min | AA: 45.79 (+2.03s | 4.2%) | Nova of Virginia | 06/11/2026 | NOVA 2026 Virginia Commonwealth Games | |
| 417 | Elliott Ganancial | 47.83 | 10 | A Min | AA: 45.79 (+2.04s | 4.3%) | Hawaii Swimming Club | 07/03/2026 | 2026 Keo Nakama Swim Meet | |
| 418 | Frankie Chao | 47.83 | 10 | A Min | AA: 45.79 (+2.04s | 4.3%) | North Carolina Aquatic Club | 07/16/2026 | 2026 NCS LC AG Championships | |
| 419 | Kort Mignery | 47.86 | 10 | A Min | AA: 45.79 (+2.07s | 4.3%) | Powell Crosley YMCA | 06/17/2026 | Swim Fort Lauderdale Speedo Summer Classic 26 | |
| 420 | Noah Mobasseri | 47.89 | 9 | A Min | AA: 45.79 (+2.10s | 4.4%) | Aquazot Swim Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 421 | Haolin Chen | 47.90 | 10 | BB Min | A: 47.89 (+0.01s | 0.0%) | Pacific Dragons Swim Team | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 422 | Alexander Kovnatsky | 47.90 | 10 | BB Min | A: 47.89 (+0.01s | 0.0%) | Los Angeles Swim Club | 07/25/2024 | 2024 CA SCS BREA Summer A G Champs | |
| 423 | Layton Groneck | 47.92 | 10 | BB Min | A: 47.89 (+0.03s | 0.1%) | Northern KY Clippers | 06/05/2026 | 25th Annual CLPR David Webb Meet | |
| 424 | Cayden Willamowski | 47.92 | 9 | BB Min | A: 47.89 (+0.03s | 0.1%) | Lima Family YMCA Swim Team | 07/23/2026 | 2026 OH LC Junior Championships | |
| 425 | William Bradley | 47.92 | 9 | BB Min | A: 47.89 (+0.03s | 0.1%) | Nova of Virginia | 07/16/2026 | 2026 Virginia Swimming LC Age Group Champions | |
| 426 | Leo Lafferty | 47.94 | 10 | BB Min | A: 47.89 (+0.05s | 0.1%) | Westlake Aquatic Facility | 07/09/2026 | 2026 ST NIST LC STAGS | |
| 427 | Merrick Harner | 47.95 | 10 | BB Min | A: 47.89 (+0.06s | 0.1%) | Brevard Swim Club | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 428 | Liam Taylor | 47.95 | 9 | BB Min | A: 47.89 (+0.06s | 0.1%) | Southwest Stars Swim Club | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 429 | Yu Xu | 47.95 | 10 | BB Min | A: 47.89 (+0.06s | 0.1%) | SwimMAC Carolina | 07/24/2026 | 2026 NC SwimMAC LC Summer Sun Sational | |
| 430 | Walker Lewis | 47.96 | 10 | BB Min | A: 47.89 (+0.07s | 0.1%) | Excel Aquatics | 06/04/2026 | 2026 Beaman Toyota Firecracker Invite | |
| 431 | Jacob Bouchard | 47.96 | 10 | BB Min | A: 47.89 (+0.07s | 0.1%) | Nova of Virginia | 05/15/2026 | NOVA Spring Splash | |
| 432 | Ilay Fisher | 47.96 | 10 | BB Min | A: 47.89 (+0.07s | 0.1%) | Ccat Swimming | 06/11/2026 | 2026 SCS June AG Invite CANY | |
| 433 | Emmett Tourney | 47.97 | 10 | BB Min | A: 47.89 (+0.08s | 0.2%) | Red Wing Swim Club | 05/30/2026 | 2026 MN RSC Summer Jam | |
| 434 | Cavan Clark | 47.99 | 10 | BB Min | A: 47.89 (+0.10s | 0.2%) | Uncle Sam Swim Team | 06/20/2026 | 2026 NE NSSC Invitational Springfield College | |
| 435 | Garrett Michel | 48.00 | 10 | BB Min | A: 47.89 (+0.11s | 0.2%) | SwimMAC Carolina | 07/16/2026 | 2026 NCS LC AG Championships | |
| 436 | David Shoer | 48.01 | 10 | BB Min | A: 47.89 (+0.12s | 0.2%) | Patriot Aquatics | 05/15/2026 | 2026 PA Long Course Invite | |
| 437 | Jun Lin | 48.02 | 8 | BB Min | A: 47.89 (+0.13s | 0.3%) | Seattle Metropolitan Aquatic C | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 438 | Jeffrey Crouse | 48.02 | 10 | BB Min | A: 47.89 (+0.13s | 0.3%) | Livermore AquaCowboys | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 439 | Thomas Brinton | 48.02 | 9 | BB Min | A: 47.89 (+0.13s | 0.3%) | Csp Tideriders | 07/23/2026 | 2026 Ozark Long Course Champs Copied | |
| 440 | Mateo Sison | 48.03 | 10 | BB Min | A: 47.89 (+0.14s | 0.3%) | San Ramon Valley Aquatics | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 441 | Duke Guo | 48.03 | 10 | BB Min | A: 47.89 (+0.14s | 0.3%) | McAllen Swim Club | 06/06/2026 | 2026 HPAC Sunshine Splash | |
| 442 | Owen McDonald | 48.04 | 10 | BB Min | A: 47.89 (+0.15s | 0.3%) | Houston Hydra | 06/05/2026 | 2026 ST SRG Arena Surge Shark Sizzler | |
| 443 | Vince Cho | 48.04 | 9 | BB Min | A: 47.89 (+0.15s | 0.3%) | Maywood Sparks Swim Team | 06/11/2026 | 2026 SCS June AG Invite CANY | |
| 444 | Samuel Leven | 48.05 | 10 | BB Min | A: 47.89 (+0.16s | 0.3%) | Unattached | 06/10/2026 | Splash Into Summer | |
| 445 | Rayan Khan | 48.05 | 10 | BB Min | A: 47.89 (+0.16s | 0.3%) | South Shore YMCA Strypers | 07/17/2026 | 2026 NE MST ESC LCM 12 Under Championship | |
| 446 | Mickey Opp | 48.06 | 10 | BB Min | A: 47.89 (+0.17s | 0.4%) | Sporting Jax Aquatic Club | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 447 | Finley Brandt | 48.06 | 10 | BB Min | A: 47.89 (+0.17s | 0.4%) | Houston Hydra | 06/05/2026 | 2026 ST SRG Arena Surge Shark Sizzler | |
| 448 | Demitry Daniel | 48.07 | 10 | BB Min | A: 47.89 (+0.18s | 0.4%) | Canyons Aquatic Club | 06/11/2026 | 2026 SCS June AG Invite CANY | |
| 449 | Ray Yu | 48.07 | 10 | BB Min | A: 47.89 (+0.18s | 0.4%) | Aquazot Swim Club | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 450 | Hunter Wilson | 48.07 | 10 | BB Min | A: 47.89 (+0.18s | 0.4%) | Kamehameha Swim Club | 07/16/2026 | 2026 HISI LCM Championships | |
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.