Pacific Swimming Boys 10 & under - 50 Y Back
These rankings show the swimmers' placement within their Local Swimming Committee (LSC).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 | Owen Mast | 45.84 | 9 | B Min | BB: 42.89 (+2.95s | 6.4%) | Quicksilver Swimming | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 302 | Jonah Lin | 45.84 | 8 | B Min | BB: 42.89 (+2.95s | 6.4%) | Quicksilver Swimming | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 303 | Lincoln Sparhawk | 45.86 | 10 | B Min | BB: 42.89 (+2.97s | 6.5%) | Burlingame Aquatics | 02/02/2024 | Alto Valentines Classic Meet | |
| 304 | Lyle Arnold | 45.87 | 10 | B Min | BB: 42.89 (+2.98s | 6.5%) | Piranha Swimming | 01/31/2026 | 2026 Peggy Ramirez Memorial Z3 Winter Champs | |
| 305 | Aiden Kiatrungrit | 45.90 | 10 | B Min | BB: 42.89 (+3.01s | 6.6%) | South San Francisco Aquatics | 11/14/2025 | PSL Pumpkin Spice Lovers 25 129 | |
| 306 | Sebastian Alfonso | 45.91 | 10 | B Min | BB: 42.89 (+3.02s | 6.6%) | Walnut Creek Aquabears | 03/28/2026 | Piedmont Swim Team C B BB+ | |
| 307 | Samuel Zhou | 45.92 | 9 | B Min | BB: 42.89 (+3.03s | 6.6%) | Bay Club Panthers | 02/07/2026 | PASA CBA+ SCY Meet Feb 2026 | |
| 308 | Fedor Akimov | 45.95 | 10 | B Min | BB: 42.89 (+3.06s | 6.7%) | YMCA Presidio Aquatics | 01/17/2026 | PC PRNA Final Splash To The Championship CBA+ | |
| 309 | Edmund Lin | 45.95 | 9 | B Min | BB: 42.89 (+3.06s | 6.7%) | California Dolphins Swim Team | 01/31/2026 | Zone 2 Winter Championship Meet | |
| 310 | Stanislaw Gruszka | 46.00 | 10 | B Min | BB: 42.89 (+3.11s | 6.8%) | Walnut Creek Aquabears | 07/26/2025 | Zone 2 Summer Championships | |
| 311 | Anthony Piazza | 46.01 | 9 | B Min | BB: 42.89 (+3.12s | 6.8%) | Otter Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 312 | Owen Hayes | 46.01 | 10 | B Min | BB: 42.89 (+3.12s | 6.8%) | Hills Hurricane Swimming | 10/18/2025 | PC SRVA SCY B BB+ Meet | |
| 313 | Nixon Lo | 46.03 | 8 | B Min | BB: 42.89 (+3.14s | 6.8%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 314 | Gregory Lee | 46.08 | 10 | B Min | BB: 42.89 (+3.19s | 6.9%) | Palo Alto Stanford Aquatics | 11/15/2025 | De Anza Cupertino Aquatics CBA+ Meet | |
| 315 | Grayson Julien | 46.10 | 10 | B Min | BB: 42.89 (+3.21s | 7.0%) | South Valley Makos | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 316 | Noah Hunter | 46.12 | 9 | B Min | BB: 42.89 (+3.23s | 7.0%) | Quicksilver Swimming | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | |
| 317 | Jasper Yan | 46.16 | 7 | B Min | BB: 42.89 (+3.27s | 7.1%) | California Dolphins Swim Team | 10/18/2025 | PC CDST SC C B BB+ | |
| 318 | Alec Henriques | 46.17 | 10 | B Min | BB: 42.89 (+3.28s | 7.1%) | Napa Valley Swim Team | 11/15/2025 | NVST Swimming Into Fall 2025 | |
| 319 | Nathaniel Min | 46.18 | 9 | B Min | BB: 42.89 (+3.29s | 7.1%) | California Dolphins Swim Team | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 320 | Ethan Gao | 46.18 | 9 | B Min | BB: 42.89 (+3.29s | 7.1%) | California Dolphins Swim Team | 03/22/2025 | 2025 3 22 CDST SC C B BB+ Meet | |
| 321 | Hayk Asatryan | 46.19 | 10 | B Min | BB: 42.89 (+3.30s | 7.1%) | Milpitas Aquatic Club | 09/27/2025 | 2025 MAC Season Kick Off | |
| 322 | Cimon Bunuan | 46.21 | 9 | B Min | BB: 42.89 (+3.32s | 7.2%) | South San Francisco Aquatics | 01/10/2026 | SSF NEW YEAR SPLASH C B A+ | |
| 323 | Milo Gurkan | 46.23 | 10 | B Min | BB: 42.89 (+3.34s | 7.2%) | Seals Aquatics | 09/20/2025 | WANV CBA+ Endless Summer Meet | |
| 324 | Lucas Li | 46.24 | 8 | B Min | BB: 42.89 (+3.35s | 7.2%) | Milpitas Aquatic Club | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | |
| 325 | Esteban Trogkanis | 46.24 | 10 | B Min | BB: 42.89 (+3.35s | 7.2%) | Sunnyvale Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 326 | Ernest Gu | 46.25 | 8 | B Min | BB: 42.89 (+3.36s | 7.3%) | Bay Club Panthers | 01/10/2026 | BAC Norman Cutler Memorial | |
| 327 | Skye Gautschi | 46.26 | 9 | B Min | BB: 42.89 (+3.37s | 7.3%) | Valley Splash | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 328 | Elliott Lee Chan Kam | 46.28 | 9 | B Min | BB: 42.89 (+3.39s | 7.3%) | Alto Swim Club | 01/24/2026 | 2026 Zone 1 North Championships | |
| 329 | Max McCollum | 46.29 | 10 | B Min | BB: 42.89 (+3.40s | 7.3%) | The Olympic Club | 09/20/2025 | WANV CBA+ Endless Summer Meet | |
| 330 | Andrew Buenrostro | 46.30 | 10 | B Min | BB: 42.89 (+3.41s | 7.4%) | Palo Alto Stanford Aquatics | 01/10/2026 | SSF NEW YEAR SPLASH C B A+ | |
| 331 | Jacob Kapustin | 46.33 | 10 | B Min | BB: 42.89 (+3.44s | 7.4%) | Livermore AquaCowboys | 10/18/2025 | PC CDST SC C B BB+ | |
| 332 | Ivan Hu | 46.36 | 8 | B Min | BB: 42.89 (+3.47s | 7.5%) | Otter Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 333 | Lucas Estepa | 46.38 | 10 | B Min | BB: 42.89 (+3.49s | 7.5%) | Lakeridge Swim Team | 02/07/2025 | 2025 Valentines Day Age Group Open | |
| 334 | Joshua Miao | 46.39 | 10 | B Min | BB: 42.89 (+3.50s | 7.5%) | Quicksilver Swimming | 01/24/2025 | 2025 Brian Malick Memorial Z1S Championships | |
| 335 | Albert Jing | 46.39 | 8 | B Min | BB: 42.89 (+3.50s | 7.5%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 336 | Liam Jones | 46.40 | 9 | B Min | BB: 42.89 (+3.51s | 7.6%) | North Bay Aquatics | 09/20/2025 | WANV CBA+ Endless Summer Meet | |
| 337 | Ethan Gu | 46.45 | 10 | B Min | BB: 42.89 (+3.56s | 7.7%) | Burlingame Aquatics | 10/11/2025 | SSF October Splash C B A+ Meet | |
| 338 | Jayden Yu | 46.49 | 9 | B Min | BB: 42.89 (+3.60s | 7.7%) | DeAnza Cupertino Aquatics | 03/28/2026 | LAMV C B A+ Meet | |
| 339 | Miles Wang | 46.50 | 9 | B Min | BB: 42.89 (+3.61s | 7.8%) | Pleasanton Seahawks | 10/18/2025 | PC SRVA SCY B BB+ Meet | |
| 340 | John Brethauer | 46.53 | 10 | B Min | BB: 42.89 (+3.64s | 7.8%) | YMCA Presidio Aquatics | 03/07/2026 | Napa Valley Swim Team Swimming Towards Spring | |
| 341 | Wilson Zhou | 46.55 | 10 | B Min | BB: 42.89 (+3.66s | 7.9%) | South San Francisco Aquatics | 11/14/2025 | PSL Pumpkin Spice Lovers 25 129 | |
| 342 | Lucas Fleck | 46.57 | 10 | B Min | BB: 42.89 (+3.68s | 7.9%) | AC Swim Club | 02/28/2026 | VJO Rep The Bay C B A+ 2026 Copied | |
| 343 | Jeffrey Li | 46.60 | 9 | B Min | BB: 42.89 (+3.71s | 8.0%) | Sunnyvale Swim Club | 03/07/2026 | DACA CBA Meet | |
| 344 | Joohwan Kim | 46.61 | 8 | B Min | BB: 42.89 (+3.72s | 8.0%) | DeAnza Cupertino Aquatics | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 345 | Blake Livingston | 46.62 | 10 | B Min | BB: 42.89 (+3.73s | 8.0%) | Quicksilver Swimming | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 346 | Benjamin Aukes | 46.68 | 10 | B Min | BB: 42.89 (+3.79s | 8.1%) | AC Swim Club | 01/17/2026 | PC PRNA Final Splash To The Championship CBA+ | |
| 347 | Holden Richards | 46.68 | 9 | B Min | BB: 42.89 (+3.79s | 8.1%) | AC Swim Club | 01/31/2026 | 2026 Peggy Ramirez Memorial Z3 Winter Champs | |
| 348 | Patrick Wang | 46.69 | 8 | B Min | BB: 42.89 (+3.80s | 8.1%) | Milpitas Aquatic Club | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | |
| 349 | Makai Barraclough | 46.73 | 10 | B Min | BB: 42.89 (+3.84s | 8.2%) | Los Altos Mountain View Aquati | 03/28/2026 | LAMV C B A+ Meet | |
| 350 | Abayan Prithviraj | 46.74 | 10 | B Min | BB: 42.89 (+3.85s | 8.2%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
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.