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 | |
|---|---|---|---|---|---|---|---|---|---|
| 251 | 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 | |
| 252 | 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 | |
| 253 | 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+ | |
| 254 | Samuel Zhou | 45.92 | 10 | B Min | BB: 42.89 (+3.03s | 6.6%) | Bay Club Panthers | 02/07/2026 | PASA CBA+ SCY Meet Feb 2026 | |
| 255 | Piradon Pukrittayakamee | 45.94 | 9 | B Min | BB: 42.89 (+3.05s | 6.6%) | California Dolphins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 256 | Liam Chen | 45.97 | 9 | B Min | BB: 42.89 (+3.08s | 6.7%) | San Ramon Valley Aquatics | 07/25/2026 | Zone 2 Summer Championships | |
| 257 | Nixon Lo | 46.03 | 9 | B Min | BB: 42.89 (+3.14s | 6.8%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 258 | 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 | |
| 259 | Mithren Vijay | 46.11 | 9 | B Min | BB: 42.89 (+3.22s | 7.0%) | California Dolphins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 260 | 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 | |
| 261 | 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+ | |
| 262 | 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 | |
| 263 | Ethan Gao | 46.18 | 10 | 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 | |
| 264 | 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 | |
| 265 | 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+ | |
| 266 | 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 | |
| 267 | 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 | |
| 268 | Ernest Gu | 46.25 | 8 | B Min | BB: 42.89 (+3.36s | 7.3%) | Bay Club Panthers | 01/10/2026 | BAC Norman Cutler Memorial | |
| 269 | 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 | |
| 270 | Elliott Lee Chan Kam | 46.28 | 10 | B Min | BB: 42.89 (+3.39s | 7.3%) | Alto Swim Club | 01/24/2026 | 2026 Zone 1 North Championships | |
| 271 | 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+ | |
| 272 | Atticus Kwan | 46.30 | 10 | B Min | BB: 42.89 (+3.41s | 7.4%) | Boys & Girls Club of SF | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 273 | Ryan Ye | 46.30 | 10 | B Min | BB: 42.89 (+3.41s | 7.4%) | Walnut Creek Aquabears | 07/25/2026 | Zone 2 Summer Championships | |
| 274 | Beckett Rossi | 46.36 | 9 | B Min | BB: 42.89 (+3.47s | 7.5%) | Bishop Swim Team | 06/13/2026 | Bishop Invitational 2026 | |
| 275 | 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 | |
| 276 | 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 | |
| 277 | 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 | |
| 278 | Keo Strong | 46.44 | 9 | B Min | BB: 42.89 (+3.55s | 7.6%) | Piedmont Swim Team | 05/29/2026 | Piedmont Swim Team Club Championships | |
| 279 | Yuma Suzuki | 46.47 | 8 | B Min | BB: 42.89 (+3.58s | 7.7%) | Palo Alto Stanford Aquatics | 07/26/2026 | 2026 PASA Summer Palooza | |
| 280 | Jayden Yu | 46.49 | 10 | B Min | BB: 42.89 (+3.60s | 7.7%) | DeAnza Cupertino Aquatics | 03/28/2026 | LAMV C B A+ Meet | |
| 281 | 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 | |
| 282 | 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! | |
| 283 | 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 | |
| 284 | 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 | |
| 285 | Jeffrey Li | 46.60 | 9 | B Min | BB: 42.89 (+3.71s | 8.0%) | Sunnyvale Swim Club | 03/07/2026 | DACA CBA Meet | |
| 286 | 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 | |
| 287 | Sanav Nirmal | 46.61 | 10 | B Min | BB: 42.89 (+3.72s | 8.0%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 288 | 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 | |
| 289 | David Portnoy | 46.63 | 10 | B Min | BB: 42.89 (+3.74s | 8.0%) | DeAnza Cupertino Aquatics | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 290 | Ryan Feng | 46.65 | 9 | B Min | BB: 42.89 (+3.76s | 8.1%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 291 | 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 | |
| 292 | 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 | |
| 293 | Yimin Chen | 46.73 | 10 | B Min | BB: 42.89 (+3.84s | 8.2%) | Pleasanton Seahawks | 07/25/2026 | Zone 2 Summer Championships | |
| 294 | 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 | |
| 295 | Isaac Welmerink | 46.74 | 10 | B Min | BB: 42.89 (+3.85s | 8.2%) | Lakeridge Swim Team | 07/31/2026 | 2026 High Country Short Course Championship | |
| 296 | 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 | |
| 297 | 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 | |
| 298 | 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 | |
| 299 | Aaron Lee | 46.80 | 10 | B Min | BB: 42.89 (+3.91s | 8.4%) | Alto Swim Club | 03/07/2026 | DACA CBA Meet | |
| 300 | Robert Kolesnik | 46.80 | 10 | B Min | BB: 42.89 (+3.91s | 8.4%) | Bulldog Swim Club | 03/07/2026 | BAC Race To AGCs | |
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.