USA Boys 10 & under - 50 M Back
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 | Ethan Kang | 44.97 | 9 | BB Min | A: 43.09 (+1.88s | 4.2%) | Santa Clara Swim Club | 06/28/2024 | 2024 Valley Splash Zone 1S LCM C B A+ | |
| 352 | Jercey Zhao | 44.99 | 9 | BB Min | A: 43.09 (+1.90s | 4.2%) | Pacific Dragons Swim Team | 07/11/2025 | 2025 PN OCA July Jamboree Invitational | |
| 353 | Azaka Charan | 44.99 | 10 | BB Min | A: 43.09 (+1.90s | 4.2%) | Jbarracudas Swim Team | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 354 | Jozua Sugianto | 45.00 | 9 | BB Min | A: 43.09 (+1.91s | 4.2%) | California Dolphins Swim Team | 05/10/2025 | PC SRVA LCM C B BB+ | |
| 355 | Ari Thorne | 45.00 | 9 | BB Min | A: 43.09 (+1.91s | 4.2%) | Unattached | 06/19/2025 | 2025 Shark Open | |
| 356 | Marco Gonzalez | 45.02 | 9 | BB Min | A: 43.09 (+1.93s | 4.3%) | South Bay Aquatics | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 357 | Jaxon Despain | 45.03 | 8 | BB Min | A: 43.09 (+1.94s | 4.3%) | Denver Swim Academy | 04/26/2025 | 2025 CO FST Spring LC Fever | |
| 358 | Max Frankel | 45.03 | 10 | BB Min | A: 43.09 (+1.94s | 4.3%) | SwimRight Team | 01/17/2026 | 2026 Azura Winter Open LCM Invite | |
| 359 | Apollo Valdriz | 45.03 | 10 | BB Min | A: 43.09 (+1.94s | 4.3%) | Circle City Aquatics | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 360 | Devin Song | 45.04 | 8 | BB Min | A: 43.09 (+1.95s | 4.3%) | Rose Bowl Aquatics | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 361 | Titus Wu | 45.05 | 8 | BB Min | A: 43.09 (+1.96s | 4.4%) | Lynchburg YMCA Swim Team | 07/12/2024 | 2024 CCA Summer Awards | |
| 362 | Anderson Bradley | 45.05 | 9 | BB Min | A: 43.09 (+1.96s | 4.4%) | Coastal Machine Aquatics Club | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 363 | Merrick Harner | 45.08 | 9 | BB Min | A: 43.09 (+1.99s | 4.4%) | Brevard Swim Club | 05/23/2025 | 2025 Dr Aspi Doctor Memorial Invitational | |
| 364 | Jaize Council | 45.08 | 9 | BB Min | A: 43.09 (+1.99s | 4.4%) | Tide Swimming | 07/11/2024 | 2024 VSI Regional Summer Awards | |
| 365 | Russell Sanosi | 45.20 | 8 | BB Min | A: 43.09 (+2.11s | 4.7%) | Tide Swimming | 04/20/2024 | 2024 Black Vs Blue Intrasquad Meet | |
| 366 | Daniel Reschke | 45.20 | 9 | BB Min | A: 43.09 (+2.11s | 4.7%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 367 | Jayden Duanmu | 45.22 | 10 | BB Min | A: 43.09 (+2.13s | 4.7%) | Aquajets Swim Team | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 368 | Aleksandr Rybin | 45.25 | 9 | BB Min | A: 43.09 (+2.16s | 4.8%) | King Aquatic Club | 04/25/2025 | 2025 PN KING Spring Derby | |
| 369 | William Palumbo | 45.27 | 8 | BB Min | A: 43.09 (+2.18s | 4.8%) | Nova of Virginia | 07/11/2024 | 2024 RAYS Summer Awards | |
| 370 | Oliver Nielsen | 45.27 | 10 | BB Min | A: 43.09 (+2.18s | 4.8%) | Aquajets Swim Team | 06/26/2025 | 2025 MN AQJT Aquajets Summer Spectacular | |
| 371 | Michael Drewitz | 45.28 | 10 | BB Min | A: 43.09 (+2.19s | 4.8%) | South Metro Storm | 05/16/2025 | 2025 MN STRM Spring Startup | |
| 372 | Scott Maley | 45.29 | 9 | BB Min | A: 43.09 (+2.20s | 4.9%) | Rochester Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 373 | Greyson Huddleston | 45.32 | 8 | BB Min | A: 43.09 (+2.23s | 4.9%) | Patriot Aquatics | 05/16/2025 | 2025 PA Long Course Invite | |
| 374 | Jensen Chamberlin | 45.32 | 10 | BB Min | A: 43.09 (+2.23s | 4.9%) | Thunderbird Aquatic Club | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 375 | Sebastian Saade | 45.33 | 8 | BB Min | A: 43.09 (+2.24s | 4.9%) | Los Angeles Swim Club | 06/13/2024 | 2024 CA SCS CANY June Age Group Invite | |
| 376 | Sameer Pai | 45.33 | 9 | BB Min | A: 43.09 (+2.24s | 4.9%) | Aquajets Swim Team | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
| 377 | Evan Buchanan | 45.34 | 10 | BB Min | A: 43.09 (+2.25s | 5.0%) | Hudson Explorer Aquatic | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 378 | Zacharia Labyed | 45.36 | 8 | BB Min | A: 43.09 (+2.27s | 5.0%) | North Coast Aquatics | 06/20/2025 | 2025 SI SPLASH AND DASH | |
| 379 | Keshav Anand | 45.40 | 10 | BB Min | A: 43.09 (+2.31s | 5.1%) | Aquajets Swim Team | 06/13/2025 | 2025 MN NSAC Summer Slam Invite | |
| 380 | Jackson Lee | 45.42 | 9 | BB Min | A: 43.09 (+2.33s | 5.1%) | Burlingame Aquatics | 06/06/2025 | BAC C B A Meet | |
| 381 | Thomas Shackleton | 45.42 | 9 | BB Min | A: 43.09 (+2.33s | 5.1%) | North Coast Aquatics | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 382 | Asher Mormino | 45.46 | 9 | BB Min | A: 43.09 (+2.37s | 5.2%) | Bend Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 383 | George Yu | 45.46 | 9 | BB Min | A: 43.09 (+2.37s | 5.2%) | Santa Clara Swim Club | 07/19/2025 | Santa Clara Valley Splash Block Party | |
| 384 | Jonathan Wen | 45.47 | 9 | BB Min | A: 43.09 (+2.38s | 5.2%) | Rancho San Dieguito | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 385 | Finn Peters | 45.47 | 9 | BB Min | A: 43.09 (+2.38s | 5.2%) | Swim Florida | 06/20/2025 | 2025 GCST MARK MCCAW SUMMER | |
| 386 | Collier Jacobson | 45.48 | 10 | BB Min | A: 43.09 (+2.39s | 5.3%) | Tualatin Hills Swim Club | 07/05/2025 | 2025 OR CRST Summer Blast 3 | |
| 387 | Kai Jo | 45.48 | 10 | BB Min | A: 43.09 (+2.39s | 5.3%) | Unattached | 08/06/2025 | 2025 Western Zone Age Group Championships | |
| 388 | James Verner | 45.50 | 10 | BB Min | A: 43.09 (+2.41s | 5.3%) | Riptide Swim Team | 05/09/2025 | 2025 SD SFST Ready For Long Course | |
| 389 | Joshua Wheaton | 45.53 | 9 | BB Min | A: 43.09 (+2.44s | 5.4%) | Tualatin Hills Swim Club | 05/02/2025 | 2025 THSC Spring Invitational | |
| 390 | Dylan sun | 45.53 | 9 | BB Min | A: 43.09 (+2.44s | 5.4%) | Brea Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 391 | Joshua Gonen | 45.56 | 8 | BB Min | A: 43.09 (+2.47s | 5.4%) | YMCA of Austin Swim Alliance | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 392 | Maxwell Tam | 45.56 | 10 | BB Min | A: 43.09 (+2.47s | 5.4%) | Burlingame Aquatics | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 393 | Jhett Iwanow | 45.57 | 10 | BB Min | A: 43.09 (+2.48s | 5.4%) | Florida Elite Swimming | 07/10/2025 | 2025 FL Summer Age Group Championships | |
| 394 | Benjamin Carusone | 45.57 | 8 | BB Min | A: 43.09 (+2.48s | 5.4%) | Westlake Aquatic Facility | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 395 | Ethan Duncan | 45.58 | 8 | BB Min | A: 43.09 (+2.49s | 5.5%) | All Star Aquatics | 05/17/2024 | HNVR Storm Surge 2024 | |
| 396 | Brayden Anyanwu | 45.62 | 8 | BB Min | A: 43.09 (+2.53s | 5.5%) | Unattached | 04/05/2025 | EAJ Spring Into Long Course | |
| 397 | Keller Kirkpatrick | 45.63 | 8 | BB Min | A: 43.09 (+2.54s | 5.6%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 398 | Jace Djang | 45.65 | 9 | BB Min | A: 43.09 (+2.56s | 5.6%) | Lake Erie Silver Dolphins | 06/12/2025 | Holtrey Summer Classic | |
| 399 | Calvin Higgs | 45.67 | 9 | BB Min | A: 43.09 (+2.58s | 5.6%) | Nitro Swimming | 06/20/2025 | 2025 ST NTRO LC Prelim Final Invite | |
| 400 | Marcello Rinaldi | 45.67 | 9 | BB Min | A: 43.09 (+2.58s | 5.6%) | Minnetonka Swim Club | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
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.