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 | 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 | |
| 352 | Logan Ma | 52.41 | 9 | B Min | BB: 47.69 (+4.72s | 9.0%) | East Bay Silver Dolphins | 10/17/2025 | 2025 KING OF THE HILL CHALLENGE | |
| 353 | 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 | |
| 354 | Mateo Lopez | 52.45 | 8 | B Min | BB: 47.69 (+4.76s | 9.1%) | Quicksilver Swimming | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 355 | Clayton Du | 52.47 | 9 | B Min | BB: 47.69 (+4.78s | 9.1%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 356 | 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 | |
| 357 | Arthur Viray | 52.54 | 9 | B Min | BB: 47.69 (+4.85s | 9.2%) | Daly City Dolphins | 12/06/2025 | DCD Winter Holiday Splash CBA+ | |
| 358 | 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 | |
| 359 | 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 | |
| 360 | William Huang | 52.60 | 8 | B Min | BB: 47.69 (+4.91s | 9.3%) | Daly City Dolphins | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 361 | Alexander Forward | 52.61 | 8 | B Min | BB: 47.69 (+4.92s | 9.4%) | San Jose Goosemonkeys | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 362 | Patrick Chen | 52.65 | 9 | B Min | BB: 47.69 (+4.96s | 9.4%) | Sunnyvale Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 363 | Logan Shen | 52.65 | 10 | B Min | BB: 47.69 (+4.96s | 9.4%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 364 | 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+ | |
| 365 | Clarence Lee | 52.76 | 10 | B Min | BB: 47.69 (+5.07s | 9.6%) | Daly City Dolphins | 02/07/2026 | 2026 PSL Super Finals Invitational | |
| 366 | Liam Kwon | 52.78 | 10 | B Min | BB: 47.69 (+5.09s | 9.6%) | Alto Swim Club | 11/15/2025 | Alto Nov 15 16 Fall Frolic | |
| 367 | Pi Cheng | 52.78 | 10 | B Min | BB: 47.69 (+5.09s | 9.6%) | Los Altos Mountain View Aquati | 03/28/2026 | LAMV C B A+ Meet | |
| 368 | Evan Kim | 52.78 | 10 | B Min | BB: 47.69 (+5.09s | 9.6%) | Sunnyvale Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 369 | Andrew Simon-O'Neill | 52.89 | 10 | B Min | BB: 47.69 (+5.20s | 9.8%) | Oakland Undercurrent Swim Team | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | |
| 370 | Sebastian Dudenko | 52.92 | 8 | B Min | BB: 47.69 (+5.23s | 9.9%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 371 | 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 | |
| 372 | Lyle Arnold | 52.97 | 10 | B Min | BB: 47.69 (+5.28s | 10.0%) | Piranha Swimming | 01/17/2026 | PC PRNA Final Splash To The Championship CBA+ | |
| 373 | 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 | |
| 374 | Dylan Wang | 53.02 | 8 | B Min | BB: 47.69 (+5.33s | 10.1%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 375 | Connor Watts | 53.05 | 9 | B Min | BB: 47.69 (+5.36s | 10.1%) | Scott Valley Sea Serpents | 11/08/2025 | TCA PC November SC C B A+ | |
| 376 | Nathaniel Min | 53.05 | 9 | B Min | BB: 47.69 (+5.36s | 10.1%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 377 | Wyatt Moon | 53.09 | 10 | B Min | BB: 47.69 (+5.40s | 10.2%) | Quicksilver Swimming | 04/20/2024 | 2024 Pacific Swimming 10 U Championships | |
| 378 | Ronan MurdockPerriera | 53.14 | 9 | B Min | BB: 47.69 (+5.45s | 10.3%) | AC Swim Club | 11/08/2025 | TCA PC November SC C B A+ | |
| 379 | Brian Chen | 53.15 | 10 | B Min | BB: 47.69 (+5.46s | 10.3%) | Palo Alto Stanford Aquatics | 12/20/2025 | 2025 PASA Winter Frolic Meet @ PALY HS | |
| 380 | Eden Hai | 53.15 | 8 | B Min | BB: 47.69 (+5.46s | 10.3%) | Milpitas Aquatic Club | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 381 | Satya Gidwani | 53.25 | 10 | B Min | BB: 47.69 (+5.56s | 10.4%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
| 382 | Felix Lin | 53.27 | 8 | B Min | BB: 47.69 (+5.58s | 10.5%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 383 | Bryan Xia | 53.30 | 7 | B Min | BB: 47.69 (+5.61s | 10.5%) | Rockville Montgomery Swim Club | 11/08/2025 | 2025 Autumn Mini Meet | |
| 384 | Isaac Kantor | 53.32 | 10 | B Min | BB: 47.69 (+5.63s | 10.6%) | AC Swim Club | 07/26/2025 | 2025 REAL Championships | |
| 385 | Zachary Tsang | 53.35 | 9 | B Min | BB: 47.69 (+5.66s | 10.6%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 386 | Caleb Seid | 53.38 | 10 | B Min | BB: 47.69 (+5.69s | 10.7%) | Palo Alto Stanford Aquatics | 10/11/2025 | SSF October Splash C B A+ Meet | |
| 387 | Evan Zhu | 53.40 | 9 | B: 53.39 (+0.01s | 0.0%) | Los Gatos Swim Club | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | ||
| 388 | Andersen Au | 53.41 | 10 | B: 53.39 (+0.02s | 0.0%) | DeAnza Cupertino Aquatics | 03/28/2026 | LAMV C B A+ Meet | ||
| 389 | Amet Cypert | 53.42 | 6 | B: 53.39 (+0.03s | 0.1%) | South San Francisco Aquatics | 12/06/2025 | DCD Winter Holiday Splash CBA+ | ||
| 390 | Albert Yang | 53.42 | 9 | B: 53.39 (+0.03s | 0.1%) | California Dolphins Swim Team | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | ||
| 391 | Mason Cao | 53.43 | 10 | B: 53.39 (+0.04s | 0.1%) | Quicksilver Swimming | 04/20/2024 | 2024 Pacific Swimming 10 U Championships | ||
| 392 | Crew Dacko | 53.44 | 9 | B: 53.39 (+0.05s | 0.1%) | Montclair Swim Team | 11/01/2025 | Kati McDermott Memorial Fall Jamboree Invite | ||
| 393 | League Anakata | 53.45 | 10 | B: 53.39 (+0.06s | 0.1%) | Alameda Gators | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | ||
| 394 | Lucas Nguyen | 53.47 | 9 | B: 53.39 (+0.08s | 0.1%) | Valley Splash | 02/07/2026 | Valley Splash Short Course C B A Meet | ||
| 395 | Dylan Zhang | 53.49 | 8 | B: 53.39 (+0.10s | 0.2%) | Santa Clara Swim Club | 02/07/2026 | Valley Splash Short Course C B A Meet | ||
| 396 | Leonardo Negritoiu | 53.51 | 10 | B: 53.39 (+0.12s | 0.2%) | The Olympic Club | 03/28/2026 | SSS Shamrock Showdown CBA+ | ||
| 397 | Jay Guzman | 53.52 | 10 | B: 53.39 (+0.13s | 0.2%) | AC Swim Club | 12/06/2025 | Neptune Swimming Swim Like The Dickens | ||
| 398 | Diego Watts | 53.62 | 7 | B: 53.39 (+0.23s | 0.4%) | Sebastopol Sea Serpents | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | ||
| 399 | Isaac Welmerink | 53.62 | 9 | B: 53.39 (+0.23s | 0.4%) | Lakeridge Swim Team | 01/16/2026 | 2026 Blizzard Blast Swim Meet | ||
| 400 | Mithren Vijay | 53.66 | 9 | B: 53.39 (+0.27s | 0.5%) | Valley Splash | 02/28/2026 | Swim South Bay | ||
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.