Pacific Swimming Boys 10 & under - 50 Y Breast
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 351 | Sebastian Alfonso | 51.60 | 10 | B Min | BB: 47.69 (+3.91s | 7.6%) | Walnut Creek Aquabears | 10/10/2026 | Orinda Aquatics PC SC C B BB+ | |
| 352 | Marlon Chinchilla | 51.63 | 9 | B Min | BB: 47.69 (+3.94s | 7.6%) | Piranha Swimming | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | |
| 353 | Clayton Du | 51.66 | 10 | B Min | BB: 47.69 (+3.97s | 7.7%) | Palo Alto Stanford Aquatics | 10/24/2026 | SUNN Fall Classic 2026 | |
| 354 | William Zhao | 51.67 | 10 | B Min | BB: 47.69 (+3.98s | 7.7%) | Palo Alto Stanford Aquatics | 10/24/2026 | SUNN Fall Classic 2026 | |
| 355 | Yash Bharambe | 51.67 | 10 | B Min | BB: 47.69 (+3.98s | 7.7%) | Sunnyvale Swim Club | 09/27/2026 | SUNN Blue And Gold Intrasquad Meet | |
| 356 | Andrew Chen | 51.77 | 7 | B Min | BB: 47.69 (+4.08s | 7.9%) | Thunder Coast Aquatics | 10/03/2026 | Neptune Swimming Fall Classic | |
| 357 | Kingston Walls | 51.78 | 9 | B Min | BB: 47.69 (+4.09s | 7.9%) | Terrapins Swim Team | 11/15/2024 | Pacific Swimming SCY B BB+ Last Chance Meet | |
| 358 | Kingston Lao | 51.84 | 9 | B Min | BB: 47.69 (+4.15s | 8.0%) | Daly City Dolphins | 09/18/2026 | PSL Pacifica Season Launch CBA+ Meet | |
| 359 | Storm Houborg | 51.86 | 10 | B Min | BB: 47.69 (+4.17s | 8.0%) | San Ramon Valley Aquatics | 02/20/2026 | Pacific Swim SCY C B BB+ Meet Hosted By TERA | |
| 360 | Justin Han | 51.94 | 10 | B Min | BB: 47.69 (+4.25s | 8.2%) | DeAnza Cupertino Aquatics | 10/03/2026 | 2026 De Anza Cupertino Aquatics SC CBA Meet | |
| 361 | Miles Diaz | 51.95 | 9 | B Min | BB: 47.69 (+4.26s | 8.2%) | Unattached | 10/09/2026 | VJO S Sprint For The Golden Ticket 2026 C | |
| 362 | Elias Braginton | 51.97 | 8 | B Min | BB: 47.69 (+4.28s | 8.2%) | Lakeridge Swim Team | 10/16/2026 | 2026 KING OF THE HILL CHALLENGE | |
| 363 | Arthur Armstrong | 51.98 | 8 | B Min | BB: 47.69 (+4.29s | 8.3%) | Northern Nevada Aquatics | 10/16/2026 | 2026 KING OF THE HILL CHALLENGE | |
| 364 | Ryan Feng | 52.02 | 9 | B Min | BB: 47.69 (+4.33s | 8.3%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 365 | Pi Cheng | 52.03 | 10 | B Min | BB: 47.69 (+4.34s | 8.3%) | Los Altos Mountain View Aquati | 10/03/2026 | 2026 De Anza Cupertino Aquatics SC CBA Meet | |
| 366 | Owen Mast | 52.09 | 9 | B Min | BB: 47.69 (+4.40s | 8.4%) | Quicksilver Swimming | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 367 | Nash Meredith | 52.10 | 10 | B Min | BB: 47.69 (+4.41s | 8.5%) | Pacifica Sea Lions | 02/07/2026 | 2026 PSL Super Finals Invitational | |
| 368 | Albert Yang | 52.11 | 9 | B Min | BB: 47.69 (+4.42s | 8.5%) | California Dolphins Swim Team | 09/19/2026 | PC LAC C B BB 26 Copied | |
| 369 | Nolan Sun | 52.13 | 10 | B Min | BB: 47.69 (+4.44s | 8.5%) | Pleasanton Seahawks | 07/25/2026 | Zone 2 Summer Championships | |
| 370 | Tomaso Pisegna | 52.23 | 9 | B Min | BB: 47.69 (+4.54s | 8.7%) | South Valley Makos | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 371 | Evan Chang | 52.23 | 9 | B Min | BB: 47.69 (+4.54s | 8.7%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 372 | Aaron Chen | 52.23 | 10 | B Min | BB: 47.69 (+4.54s | 8.7%) | California Dolphins Swim Team | 10/10/2026 | Orinda Aquatics PC SC C B BB+ | |
| 373 | Logan Shen | 52.30 | 10 | B Min | BB: 47.69 (+4.61s | 8.8%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 374 | Clark Wilson | 52.35 | 10 | B Min | BB: 47.69 (+4.66s | 8.9%) | Unattached | 12/06/2025 | Alto Dec 6 7 CBA | |
| 375 | Krishay Pandit | 52.35 | 9 | B Min | BB: 47.69 (+4.66s | 8.9%) | Milpitas Aquatic Club | 06/10/2026 | MAC June 10th Block Party | |
| 376 | Maxwell Kelsey | 52.36 | 9 | B Min | BB: 47.69 (+4.67s | 8.9%) | Almaden Riptide | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 377 | Joohwan Kim | 52.39 | 8 | B Min | BB: 47.69 (+4.70s | 9.0%) | DeAnza Cupertino Aquatics | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 378 | Chinmay Joshi | 52.43 | 9 | B Min | BB: 47.69 (+4.74s | 9.0%) | Quicksilver Swimming | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 379 | Duke Heslop | 52.45 | 9 | B Min | BB: 47.69 (+4.76s | 9.1%) | Lakeridge Swim Team | 10/16/2026 | 2026 KING OF THE HILL CHALLENGE | |
| 380 | Zachary Tsang | 52.46 | 10 | B Min | BB: 47.69 (+4.77s | 9.1%) | Palo Alto Stanford Aquatics | 07/10/2026 | Sensational Summer Of 26 Block Party | |
| 381 | Adriel Bunquin | 52.51 | 10 | B Min | BB: 47.69 (+4.82s | 9.2%) | East Bay Silver Dolphins | 10/16/2026 | 2026 KING OF THE HILL CHALLENGE | |
| 382 | Maxwell Ma | 52.53 | 9 | B Min | BB: 47.69 (+4.84s | 9.2%) | California Dolphins Swim Team | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 383 | Arthur Viray | 52.54 | 10 | B Min | BB: 47.69 (+4.85s | 9.2%) | Daly City Dolphins | 12/06/2025 | DCD Winter Holiday Splash CBA+ | |
| 384 | Daniel Rumean | 52.55 | 10 | B Min | BB: 47.69 (+4.86s | 9.2%) | Sunnyvale Swim Club | 09/28/2025 | SUNN Blue And Gold Intrasquad Meet Copied | |
| 385 | Micah Kazemini | 52.55 | 10 | B Min | BB: 47.69 (+4.86s | 9.2%) | Neptune Swimming | 10/03/2026 | Neptune Swimming Fall Classic | |
| 386 | Felix Parvanta | 52.55 | 8 | B Min | BB: 47.69 (+4.86s | 9.2%) | Brentwood Seawolves | 10/10/2026 | SRVA SC C B BB+ Meet | |
| 387 | Hugo Situ | 52.59 | 9 | B Min | BB: 47.69 (+4.90s | 9.3%) | Daly City Dolphins | 10/11/2025 | SSF October Splash C B A+ Meet | |
| 388 | William Huang | 52.60 | 9 | B Min | BB: 47.69 (+4.91s | 9.3%) | Daly City Dolphins | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 389 | Beau Connelly | 52.73 | 10 | B Min | BB: 47.69 (+5.04s | 9.6%) | Los Gatos Swim Club | 11/15/2024 | MBSC GSMY Z1S Race To AGC C B A+ | |
| 390 | Ethan Stein | 52.76 | 9 | B Min | BB: 47.69 (+5.07s | 9.6%) | Daly City Dolphins | 09/18/2026 | PSL Pacifica Season Launch CBA+ Meet | |
| 391 | Ethan Yu | 52.82 | 7 | B Min | BB: 47.69 (+5.13s | 9.7%) | Sunnyvale Swim Club | 10/24/2026 | SUNN Fall Classic 2026 | |
| 392 | Christopher Henriques | 52.85 | 8 | B Min | BB: 47.69 (+5.16s | 9.8%) | Napa Valley Swim Team | 09/26/2026 | WANV CBA+ Endless Summer Meet 2026 | |
| 393 | Jaxson Helmer | 52.85 | 10 | B Min | BB: 47.69 (+5.16s | 9.8%) | DeAnza Cupertino Aquatics | 10/03/2026 | 2026 De Anza Cupertino Aquatics SC CBA Meet | |
| 394 | William Burkart | 52.87 | 8 | B Min | BB: 47.69 (+5.18s | 9.8%) | Monterey Bay Swim Club | 10/03/2026 | Quicksilver Santa Cruz Competencia 2026 | |
| 395 | Rogan Yang | 52.90 | 10 | B Min | BB: 47.69 (+5.21s | 9.8%) | Richmond Sailfish | 10/09/2026 | VJO S Sprint For The Golden Ticket 2026 C | |
| 396 | Sebastian Dudenko | 52.92 | 9 | B Min | BB: 47.69 (+5.23s | 9.9%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 397 | Andrew Buenrostro | 52.93 | 10 | B Min | BB: 47.69 (+5.24s | 9.9%) | Palo Alto Stanford Aquatics | 12/20/2025 | 2025 PASA Winter Frolic Meet @ PALY HS | |
| 398 | Ethan Tse | 52.95 | 9 | B Min | BB: 47.69 (+5.26s | 9.9%) | Santa Clara Swim Club | 09/19/2026 | 2026 Milpitas Aquatic Club Season Kick Off | |
| 399 | Anthony Piazza | 52.96 | 9 | B Min | BB: 47.69 (+5.27s | 10.0%) | Otter Swim Club | 09/18/2026 | PSL Pacifica Season Launch CBA+ Meet | |
| 400 | Boran Lu | 52.99 | 9 | B Min | BB: 47.69 (+5.30s | 10.0%) | Neptune Swimming | 03/07/2026 | Napa Valley Swim Team Swimming Towards Spring | |
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.