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 | 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 | |
| 302 | Ernest Gu | 46.25 | 8 | B Min | BB: 42.89 (+3.36s | 7.3%) | Bay Club Panthers | 01/10/2026 | BAC Norman Cutler Memorial | |
| 303 | 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 | |
| 304 | 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 | |
| 305 | 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 | |
| 306 | 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+ | |
| 307 | 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+ | |
| 308 | 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 | |
| 309 | 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 | |
| 310 | Albert Jing | 46.39 | 8 | B Min | BB: 42.89 (+3.50s | 7.5%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 311 | 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 | |
| 312 | 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 | |
| 313 | 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 | |
| 314 | 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 | |
| 315 | Marlon Chinchilla | 46.52 | 9 | B Min | BB: 42.89 (+3.63s | 7.8%) | Piranha Swimming | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | |
| 316 | 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 | |
| 317 | 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 | |
| 318 | 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 | |
| 319 | Jeffrey Li | 46.60 | 9 | B Min | BB: 42.89 (+3.71s | 8.0%) | Sunnyvale Swim Club | 03/07/2026 | DACA CBA Meet | |
| 320 | 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 | |
| 321 | 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 | |
| 322 | 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+ | |
| 323 | 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 | |
| 324 | 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 | |
| 325 | 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 | |
| 326 | 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 | |
| 327 | Woohyun Kim | 46.76 | 8 | B Min | BB: 42.89 (+3.87s | 8.3%) | Santa Clara Swim Club | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 328 | Bruce Zhang | 46.78 | 9 | B Min | BB: 42.89 (+3.89s | 8.3%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
| 329 | Aaron Lee | 46.80 | 10 | B Min | BB: 42.89 (+3.91s | 8.4%) | Alto Swim Club | 03/07/2026 | DACA CBA Meet | |
| 330 | Robert Kolesnik | 46.80 | 10 | B Min | BB: 42.89 (+3.91s | 8.4%) | Bulldog Swim Club | 03/07/2026 | BAC Race To AGCs | |
| 331 | Kevin Zhang | 46.84 | 9 | B Min | BB: 42.89 (+3.95s | 8.4%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 332 | Charles Zheng | 46.84 | 10 | B Min | BB: 42.89 (+3.95s | 8.4%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 333 | Isaac Welmerink | 46.87 | 9 | B Min | BB: 42.89 (+3.98s | 8.5%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 334 | Greyson Thach | 46.95 | 8 | B Min | BB: 42.89 (+4.06s | 8.6%) | Oakland Undercurrent Swim Team | 03/14/2026 | 2026 NNA AGO | |
| 335 | Aiden Hu | 47.07 | 10 | B Min | BB: 42.89 (+4.18s | 8.9%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
| 336 | Piradon Pukrittayakamee | 47.09 | 9 | B Min | BB: 42.89 (+4.20s | 8.9%) | California Dolphins Swim Team | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 337 | John Patane | 47.09 | 8 | B Min | BB: 42.89 (+4.20s | 8.9%) | Sonoma Sea Dragons | 11/22/2025 | Thankswimming Classic 2025 | |
| 338 | Charles Li | 47.14 | 9 | B Min | BB: 42.89 (+4.25s | 9.0%) | South San Francisco Aquatics | 01/10/2026 | SSF NEW YEAR SPLASH C B A+ | |
| 339 | Minchan Lee | 47.15 | 10 | B Min | BB: 42.89 (+4.26s | 9.0%) | Reno Aquatic Club | 03/14/2026 | 2026 NNA AGO | |
| 340 | Evan Kim | 47.21 | 10 | B Min | BB: 42.89 (+4.32s | 9.2%) | Sunnyvale Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 341 | Mason Cao | 47.22 | 10 | B Min | BB: 42.89 (+4.33s | 9.2%) | Santa Clara Swim Club | 10/04/2024 | SCSC Pacific Swimming Short Cours C B A+ Meet | |
| 342 | James Xiao | 47.24 | 9 | B Min | BB: 42.89 (+4.35s | 9.2%) | Otter Swim Club | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 343 | Reyansh Kini | 47.25 | 10 | B Min | BB: 42.89 (+4.36s | 9.2%) | San Ramon Valley Aquatics | 10/18/2025 | PC SRVA SCY B BB+ Meet | |
| 344 | Reid Barylski | 47.31 | 10 | B Min | BB: 42.89 (+4.42s | 9.3%) | Neptune Swimming | 07/26/2025 | 2025 REAL Championships | |
| 345 | Landon Thomassian | 47.34 | 9 | B Min | BB: 42.89 (+4.45s | 9.4%) | Almaden Riptide | 10/25/2025 | GGST Spooktacular 2025 | |
| 346 | Zaddik Fan | 47.35 | 10 | B Min | BB: 42.89 (+4.46s | 9.4%) | Alto Swim Club | 03/28/2026 | Alto Rock The Blocks Invitational 2026 | |
| 347 | Julian Zhang | 47.38 | 10 | B Min | BB: 42.89 (+4.49s | 9.5%) | DeAnza Cupertino Aquatics | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 348 | Benjamin Du | 47.39 | 10 | B Min | BB: 42.89 (+4.50s | 9.5%) | Santa Clara Swim Club | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 349 | Oliver Asiri | 47.39 | 10 | B Min | BB: 42.89 (+4.50s | 9.5%) | Seals Aquatics | 03/07/2026 | Napa Valley Swim Team Swimming Towards Spring | |
| 350 | Julian Kau | 47.44 | 10 | B Min | BB: 42.89 (+4.55s | 9.6%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
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.