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 | Alfie Mobbs | 52.93 | 8 | BB Min | A: 47.89 (+5.04s | 9.5%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 402 | Peter Hofman | 52.95 | 9 | BB Min | A: 47.89 (+5.06s | 9.6%) | Cascade Swim Club | 06/20/2025 | 2025 IE VS Starlight Open | |
| 403 | Samuel Leven | 52.97 | 9 | BB Min | A: 47.89 (+5.08s | 9.6%) | Alamo Area Aquatic Association | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 404 | Ricardo Romero | 52.99 | 10 | BB Min | A: 47.89 (+5.10s | 9.6%) | West Valley Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 405 | Ruslan Kalinnikov | 53.01 | 7 | BB Min | A: 47.89 (+5.12s | 9.7%) | Olympus Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 406 | Vlad Sukharevich | 53.02 | 9 | BB Min | A: 47.89 (+5.13s | 9.7%) | Nova of Virginia | 06/27/2024 | NOVA Firecracker Classic | |
| 407 | Kroy Riley | 53.03 | 9 | BB Min | A: 47.89 (+5.14s | 9.7%) | High Performance Aquatic Club | 05/31/2025 | 2025 ST HPAC Sunshine Splash | |
| 408 | Ali Abolfadl | 53.06 | 8 | BB Min | A: 47.89 (+5.17s | 9.7%) | Olympic Cascade Aquatics | 05/16/2025 | 2025 PN IST Sockeye Springtime Madness | |
| 409 | Nolan Meinen | 53.06 | 9 | BB Min | A: 47.89 (+5.17s | 9.7%) | Nitro Swimming | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 410 | Owen Friedman | 53.07 | 8 | BB Min | A: 47.89 (+5.18s | 9.8%) | Legacy Aquatics | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 411 | Zane Seifel | 53.07 | 9 | BB Min | A: 47.89 (+5.18s | 9.8%) | Indian River Aquatics | 06/07/2025 | 2025 TCA Aaron Vaughn Memorial | |
| 412 | Noah Mobasseri | 53.08 | 8 | BB Min | A: 47.89 (+5.19s | 9.8%) | Aquazot Swim Club | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 413 | Stryker Fonseca | 53.12 | 10 | BB Min | A: 47.89 (+5.23s | 9.8%) | Barracuda Aquatic Club | 07/17/2025 | 2025 UTAGS LC Championships | |
| 414 | Joshua Vitale | 53.12 | 9 | BB Min | A: 47.89 (+5.23s | 9.8%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 415 | Yanbo LI | 53.13 | 8 | BB Min | A: 47.89 (+5.24s | 9.9%) | Seattle Metropolitan Aquatic C | 05/16/2025 | 2025 PN IST Sockeye Springtime Madness | |
| 416 | Reagan Wilsey | 53.15 | 9 | BB Min | A: 47.89 (+5.26s | 9.9%) | Palo Alto Stanford Aquatics | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 417 | Ethan Wang | 53.16 | 8 | BB Min | A: 47.89 (+5.27s | 9.9%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 418 | Eric Ruan | 53.16 | 8 | BB Min | A: 47.89 (+5.27s | 9.9%) | South East Metro Sharks | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 419 | Jayden Huang | 53.17 | 9 | BB Min | A: 47.89 (+5.28s | 9.9%) | Harbor Aquatics Club | 05/02/2025 | 2025 PN BC May Flowers | |
| 420 | Maksim Chichetenko | 53.17 | 8 | BB Min | A: 47.89 (+5.28s | 9.9%) | Fast Lane Aquatics | 05/16/2025 | 2025 PA Long Course Invite | |
| 421 | Marcello Rinaldi | 53.18 | 9 | BB Min | A: 47.89 (+5.29s | 9.9%) | Minnetonka Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 422 | Enzo Harter | 53.19 | 9 | BB Min | A: 47.89 (+5.30s | 10.0%) | Beaverton Area Aquatics Club | 04/18/2025 | 2025 MAC LONG COURSE INVITATIONAL | |
| 423 | Joseph James | 53.19 | 10 | BB Min | A: 47.89 (+5.30s | 10.0%) | Southwest Stars Swim Club | 06/12/2025 | 2025 RAFC Summer Solstice | |
| 424 | Marco Gonzalez | 53.20 | 9 | BB Min | A: 47.89 (+5.31s | 10.0%) | South Bay Aquatics | 06/20/2025 | 2025 SI SPLASH AND DASH | |
| 425 | Peter Pickett | 53.23 | 10 | BB Min | A: 47.89 (+5.34s | 10.0%) | Steel City Aquatics | 06/12/2025 | Holtrey Summer Classic | |
| 426 | Henry Zheng | 53.24 | 8 | BB Min | A: 47.89 (+5.35s | 10.0%) | Aquajets Swim Team | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 427 | Braylon Ward | 53.26 | 9 | BB Min | A: 47.89 (+5.37s | 10.1%) | Texas Gold | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 428 | Timothy Liu | 53.31 | 10 | BB Min | A: 47.89 (+5.42s | 10.2%) | California Dolphins Swim Team | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 429 | Aiden Tam | 53.32 | 10 | BB Min | A: 47.89 (+5.43s | 10.2%) | Sunnyvale Swim Club | 06/27/2025 | Silicon Valley LC CBA+ Meet | |
| 430 | Jackson Macaluso | 53.34 | 9 | BB Min | A: 47.89 (+5.45s | 10.2%) | Tampa Elite Aquatics | 04/11/2025 | 2025 Stingrays Early LCM Season Opener | |
| 431 | Weston Weishaar | 53.37 | 10 | BB Min | A: 47.89 (+5.48s | 10.3%) | Skagit Valley YMCA Tritons | 06/20/2025 | 2025 IE VS Starlight Open | |
| 432 | Samik Dangol | 53.39 | 8 | BB Min | A: 47.89 (+5.50s | 10.3%) | Stingrays Swim Team | 07/11/2024 | 2024 RAYS Summer Awards | |
| 433 | Lyman Ung | 53.40 | 10 | BB Min | A: 47.89 (+5.51s | 10.3%) | El Cerrito Gators | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | |
| 434 | Tatsumasa Sekine | 53.42 | 8 | BB Min | A: 47.89 (+5.53s | 10.4%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 435 | Marcus Stefan | 53.45 | 10 | BB Min | A: 47.89 (+5.56s | 10.4%) | Teamgoldusa | 06/21/2025 | NVST Last Chance AG Champs Summer Plunge 2025 | |
| 436 | Beau Jakubowski | 53.45 | 8 | BB Min | A: 47.89 (+5.56s | 10.4%) | Aces Swim Club | 06/06/2025 | 2025 CO NJ Summer Solstice Invitational | |
| 437 | Lucas Pan | 53.47 | 8 | BB Min | A: 47.89 (+5.58s | 10.4%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 438 | Porter Pitti | 53.47 | 8 | BB Min | A: 47.89 (+5.58s | 10.4%) | Olympus Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 439 | Reid Kelly | 53.49 | 9 | BB Min | A: 47.89 (+5.60s | 10.5%) | Front Range Barracudas | 06/28/2025 | 2025 CO Greeley Stampede | |
| 440 | Flint Wright | 53.50 | 10 | BB Min | A: 47.89 (+5.61s | 10.5%) | SwimFast | 01/17/2026 | 2026 Azura Winter Open LCM Invite | |
| 441 | Lichen Chi | 53.51 | 8 | BB Min | A: 47.89 (+5.62s | 10.5%) | Tualatin Hills Swim Club | 06/26/2025 | 2025 Howard Jones Open | |
| 442 | Finn Peters | 53.52 | 9 | BB Min | A: 47.89 (+5.63s | 10.5%) | Swim Florida | 05/23/2025 | 2025 T2 Aquatics Norris Foundation LC Meet | |
| 443 | Juan Lopez | 53.52 | 10 | BB Min | A: 47.89 (+5.63s | 10.5%) | San Benito Aquatics | 06/20/2025 | Reno Aquatic Club Gamble | |
| 444 | Van Yetter | 53.52 | 9 | BB Min | A: 47.89 (+5.63s | 10.5%) | T2 Aquatics | 05/23/2025 | 2025 T2 Aquatics Norris Foundation LC Meet | |
| 445 | Anders Hammond | 53.54 | 9 | BB Min | A: 47.89 (+5.65s | 10.6%) | Riptide Swim Team | 07/12/2025 | 2025 CO TOPS SBL Summer Sizzler | |
| 446 | Decker Sewell | 53.56 | 9 | BB Min | A: 47.89 (+5.67s | 10.6%) | Ski Hi Aquatics | 06/27/2025 | 2025 CO Alicia Leavitt Memorial Open | |
| 447 | Thomas Nguyen | 53.56 | 8 | BB Min | A: 47.89 (+5.67s | 10.6%) | Cascade Swim Club | 09/21/2024 | 2024 PN CSC September Shakeout | |
| 448 | Darren Xue | 53.57 | 9 | BB Min | A: 47.89 (+5.68s | 10.6%) | Lone Star Aquatic Club | 07/03/2025 | 2025 ST LSAC Ultimate Time Trial (LCM) | |
| 449 | Yeim Jung | 53.58 | 9 | BB Min | A: 47.89 (+5.69s | 10.6%) | Wave Aquatics | 07/18/2025 | 2025 PN Chinook Age Group Seattle Open | |
| 450 | Oliver Maa | 53.58 | 10 | BB Min | A: 47.89 (+5.69s | 10.6%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
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.