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 | |
|---|---|---|---|---|---|---|---|---|---|
| 201 | Tyler Siu | 47.94 | 10 | B Min | BB: 47.69 (+0.25s | 0.5%) | El Cerrito Gators | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 202 | Ryan Koh | 48.02 | 10 | B Min | BB: 47.69 (+0.33s | 0.7%) | Quicksilver Swimming | 10/11/2025 | QSS Santa Cruz Competenicia C B A+ | |
| 203 | Eddie Bi | 48.03 | 8 | B Min | BB: 47.69 (+0.34s | 0.7%) | California Dolphins Swim Team | 07/26/2025 | Zone 2 Summer Championships | |
| 204 | Will Huang | 48.04 | 12 | B Min | BB: 47.69 (+0.35s | 0.7%) | Soda Fall | 11/01/2025 | Kati McDermott Memorial Fall Jamboree Invite | |
| 205 | Marco Cao | 48.06 | 10 | B Min | BB: 47.69 (+0.37s | 0.8%) | Palo Alto Stanford Aquatics | 10/25/2025 | TYR BAC SPOOKY FALL CLASSIC | |
| 206 | Olivier Thomasson | 48.09 | 10 | B Min | BB: 47.69 (+0.40s | 0.8%) | Montclair Swim Team | 05/18/2025 | Montclair 14 Under Short Course Pentathlon | |
| 207 | Thomas Sedano | 48.11 | 8 | B Min | BB: 47.69 (+0.42s | 0.9%) | Monterey Bay Swim Club | 02/14/2025 | 2025 CCS SCY AGC | |
| 208 | Toby Wong | 48.12 | 10 | B Min | BB: 47.69 (+0.43s | 0.9%) | Quicksilver Swimming | 04/26/2025 | Pacific Swimming 10 Under SC Championships | |
| 209 | Fedor Evstigneev | 48.20 | 8 | B Min | BB: 47.69 (+0.51s | 1.1%) | Santa Clara Swim Club | 09/27/2025 | 2025 MAC Season Kick Off | |
| 210 | Norne Fang | 48.32 | 7 | B Min | BB: 47.69 (+0.63s | 1.3%) | Milpitas Aquatic Club | 09/27/2025 | 2025 MAC Season Kick Off | |
| 211 | Daniel Nagaoka | 48.33 | 9 | B Min | BB: 47.69 (+0.64s | 1.3%) | Quicksilver Swimming | 04/26/2025 | Pacific Swimming 10 Under SC Championships | |
| 212 | Thomas Cooke | 48.39 | 7 | B Min | BB: 47.69 (+0.70s | 1.4%) | Aptos Cabrillo Swim Club | 11/15/2024 | MBSC GSMY Z1S Race To AGC C B A+ | |
| 213 | Harrison Tian | 48.47 | 9 | B Min | BB: 47.69 (+0.78s | 1.6%) | San Ramon Valley Aquatics | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 214 | Jeffrey Li | 48.58 | 9 | B Min | BB: 47.69 (+0.89s | 1.8%) | Sunnyvale Swim Club | 09/28/2025 | SUNN Blue And Gold Intrasquad Meet Copied | |
| 215 | Evan Doong | 48.61 | 9 | B Min | BB: 47.69 (+0.92s | 1.9%) | Sunnyvale Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 216 | Leo Miyamoto | 48.62 | 10 | B Min | BB: 47.69 (+0.93s | 1.9%) | Napa Valley Swim Team | 10/11/2025 | VJO Sprint For The Golden Ticket CBA+ 2025 | |
| 217 | John Winner | 48.64 | 10 | B Min | BB: 47.69 (+0.95s | 2.0%) | Thunder Coast Aquatics | 03/29/2025 | Alto Rock The Blocks Invitational | |
| 218 | Julian Yu | 48.65 | 8 | B Min | BB: 47.69 (+0.96s | 2.0%) | Alto Swim Club | 10/27/2023 | 2023 SUNN Fall Classic | |
| 219 | William Ouyang | 48.66 | 10 | B Min | BB: 47.69 (+0.97s | 2.0%) | Unattached | 10/11/2025 | VJO Sprint For The Golden Ticket CBA+ 2025 | |
| 220 | Hugo Chian | 48.68 | 10 | B Min | BB: 47.69 (+0.99s | 2.0%) | The Olympic Club | 09/20/2025 | WANV CBA+ Endless Summer Meet | |
| 221 | Irving Huynh | 48.71 | 8 | B Min | BB: 47.69 (+1.02s | 2.1%) | Meadow | 11/10/2024 | Fall Jamboree Invitational 2024 | |
| 222 | Owen Brauneis | 48.72 | 10 | B Min | BB: 47.69 (+1.03s | 2.1%) | Sunnyvale Swim Club | 01/25/2025 | Z1N SC Championship | |
| 223 | Weston Jaegers | 48.74 | 9 | B Min | BB: 47.69 (+1.05s | 2.2%) | Mlst | 08/02/2024 | High Country Short Course Championship | |
| 224 | Johnathan Wang | 48.75 | 8 | B Min | BB: 47.69 (+1.06s | 2.2%) | Alto Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 225 | Isaiah Fadillah | 48.75 | 9 | B Min | BB: 47.69 (+1.06s | 2.2%) | California Dolphins Swim Team | 07/26/2025 | Zone 2 Summer Championships | |
| 226 | Shayan Sarkar | 48.75 | 9 | B Min | BB: 47.69 (+1.06s | 2.2%) | Diablo Aquatics | 07/26/2025 | Zone 2 Summer Championships | |
| 227 | Youssef Mahassine | 48.77 | 10 | B Min | BB: 47.69 (+1.08s | 2.2%) | Walnut Creek Aquabears | 11/01/2025 | Kati McDermott Memorial Fall Jamboree Invite | |
| 228 | Caleb Gray | 48.81 | 8 | B Min | BB: 47.69 (+1.12s | 2.3%) | Santa Clara Swim Club | 09/27/2025 | 2025 MAC Season Kick Off | |
| 229 | Ashton Gaerlan | 48.81 | 10 | B Min | BB: 47.69 (+1.12s | 2.3%) | Livermore AquaCowboys | 09/27/2025 | PC LAC C B BB | |
| 230 | Grennan Patel | 48.82 | 10 | B Min | BB: 47.69 (+1.13s | 2.3%) | Neptune Swimming | 09/27/2025 | Neptune Swimming Fall Classic | |
| 231 | Jonathan Chen | 48.83 | 8 | B Min | BB: 47.69 (+1.14s | 2.3%) | California Dolphins Swim Team | 07/26/2025 | Zone 2 Summer Championships | |
| 232 | Jack Willey | 48.84 | 9 | B Min | BB: 47.69 (+1.15s | 2.4%) | Almaden Riptide | 10/25/2025 | GGST Spooktacular 2025 | |
| 233 | Sean Tseng | 48.85 | 10 | B Min | BB: 47.69 (+1.16s | 2.4%) | Santa Clara Swim Club | 01/24/2025 | 2025 Brian Malick Memorial Z1S Championships | |
| 234 | Kai Kitamori | 48.86 | 9 | B Min | BB: 47.69 (+1.17s | 2.4%) | East Bay Bat Rays | 07/18/2025 | 2025 Redwood Empire Swim League Championship | |
| 235 | Stanislaw Gruszka | 48.88 | 10 | B Min | BB: 47.69 (+1.19s | 2.4%) | Walnut Creek Aquabears | 07/26/2025 | Zone 2 Summer Championships | |
| 236 | Gavin Schwartz | 48.91 | 10 | B Min | BB: 47.69 (+1.22s | 2.5%) | North Bay Aquatics | 02/14/2025 | 33rd Annual Lost Dutchman Invitational | |
| 237 | Ethan Valdez | 48.94 | 10 | B Min | BB: 47.69 (+1.25s | 2.6%) | Bay Club Panthers | 01/25/2025 | Z1N SC Championship | |
| 238 | Logan Laohavanich | 48.96 | 10 | B Min | BB: 47.69 (+1.27s | 2.6%) | Burlingame Aquatics | 10/11/2025 | SSF October Splash C B A+ Meet | |
| 239 | Lincoln Matthews | 48.99 | 9 | B Min | BB: 47.69 (+1.30s | 2.7%) | North Bay Aquatics | 02/14/2025 | 33rd Annual Lost Dutchman Invitational | |
| 240 | Arwin Safaee | 49.06 | 10 | B Min | BB: 47.69 (+1.37s | 2.8%) | Alto Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 241 | Caleb Nguyen | 49.08 | 10 | B Min | BB: 47.69 (+1.39s | 2.8%) | East Bay Silver Dolphins | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 242 | Ishaan Malik | 49.09 | 9 | B Min | BB: 47.69 (+1.40s | 2.9%) | California Dolphins Swim Team | 09/27/2025 | PC LAC C B BB | |
| 243 | Penghao Yu | 49.10 | 8 | B Min | BB: 47.69 (+1.41s | 2.9%) | Palo Alto Stanford Aquatics | 07/21/2024 | 2024 PASA Summer Palooza | |
| 244 | Yixuan Zhu | 49.13 | 9 | B Min | BB: 47.69 (+1.44s | 2.9%) | Pleasanton Seahawks | 03/22/2025 | 2025 3 22 CDST SC C B BB+ Meet | |
| 245 | William Chang | 49.20 | 10 | B Min | BB: 47.69 (+1.51s | 3.1%) | Sunnyvale Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 246 | Jules Davis | 49.21 | 9 | B Min | BB: 47.69 (+1.52s | 3.1%) | Humboldt Swim Club | 11/23/2024 | Thankswimming Classic 2024 | |
| 247 | Caden Ye | 49.24 | 10 | B Min | BB: 47.69 (+1.55s | 3.1%) | Santa Clara Swim Club | 10/25/2025 | GGST Spooktacular 2025 | |
| 248 | Cameron Bantz | 49.26 | 8 | B Min | BB: 47.69 (+1.57s | 3.2%) | Crow Canyon Sharks | 09/28/2024 | Orinda Aquatics SC C B BB+ Meet | |
| 249 | Elijah Jacobs | 49.27 | 10 | B Min | BB: 47.69 (+1.58s | 3.2%) | Crescent City Swim Club | 10/25/2025 | Superior Aquatics Monster Splash | |
| 250 | Aaron Littlefield | 49.34 | 10 | B Min | BB: 47.69 (+1.65s | 3.3%) | Walnut Creek Aquabears | 03/01/2025 | Pac Swim SC B BB+ Last Chance Hosted By TERA | |
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.