Western Zone Zone Boys 10 & under - 50 Y Breast
These rankings show the swimmers' placement within their Zone.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 151 | Lucas Pan | 42.35 | 9 | BB Min | A: 42.09 (+0.26s | 0.6%) | Pacific Swimming Zone | 04/26/2026 | 2026 Pacific Swimming Zone All Star Meet | |
| 152 | Mason Sovich | 42.41 | 9 | BB Min | A: 42.09 (+0.32s | 0.8%) | Olympic Cascade Aquatics | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 153 | Hawx Hansen | 42.43 | 10 | BB Min | A: 42.09 (+0.34s | 0.8%) | Wasatch Front Fish Market | 12/29/2025 | 60th Kearns Holiday Open Invitational | |
| 154 | Aiden Kiatrungrit | 42.43 | 10 | BB Min | A: 42.09 (+0.34s | 0.8%) | South San Francisco Aquatics | 12/06/2025 | DCD Winter Holiday Splash CBA+ | |
| 155 | Herman Wollman | 42.44 | 10 | BB Min | A: 42.09 (+0.35s | 0.8%) | Gold Medal Swim Club | 02/13/2026 | 34th Annual Lost Dutchman Invitational | |
| 156 | Daniel Nagaoka | 42.44 | 10 | BB Min | A: 42.09 (+0.35s | 0.8%) | Quicksilver Swimming | 03/20/2026 | SCY Spring Age Group Championships | |
| 157 | William Power | 42.47 | 10 | BB Min | A: 42.09 (+0.38s | 0.9%) | Monterey Bay Swim Club | 07/18/2025 | CVAL | |
| 158 | Leo Ioffe | 42.49 | 10 | BB Min | A: 42.09 (+0.40s | 0.9%) | Santa Clara Swim Club | 02/28/2026 | Swim South Bay | |
| 159 | Charles Sundberg | 42.50 | 10 | BB Min | A: 42.09 (+0.41s | 1.0%) | North Bay Aquatics | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 160 | Jonathan Nelson | 42.52 | 10 | BB Min | A: 42.09 (+0.43s | 1.0%) | Utah Valley Aquatics | 12/26/2024 | 59th Kearns Holiday Open Invitational | |
| 161 | Leland Tsou | 42.53 | 10 | BB Min | A: 42.09 (+0.44s | 1.0%) | Paseo Aquatics Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 162 | Bryan HU | 42.54 | 10 | BB Min | A: 42.09 (+0.45s | 1.1%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 163 | Aleksandr Rybin | 42.56 | 10 | BB Min | A: 42.09 (+0.47s | 1.1%) | King Aquatic Club | 11/22/2025 | 2025 PN November AGI Div 1 (PDST) | |
| 164 | Ari Mobasseri | 42.57 | 8 | BB Min | A: 42.09 (+0.48s | 1.1%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 165 | James Milchteim | 42.58 | 9 | BB Min | A: 42.09 (+0.49s | 1.2%) | Bay Club Aquatics | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 166 | Carson Yin | 42.60 | 10 | BB Min | A: 42.09 (+0.51s | 1.2%) | Tualatin Hills Swim Club | 05/16/2026 | 2026 John DeRoest Sextathlon Swim Meet | |
| 167 | Adam Ma | 42.61 | 10 | BB Min | A: 42.09 (+0.52s | 1.2%) | California Dolphins Swim Team | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 168 | Elliott Boland | 42.61 | 10 | BB Min | A: 42.09 (+0.52s | 1.2%) | Academy Swim Club | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 169 | Phinnaeus Johnson | 42.62 | 10 | BB Min | A: 42.09 (+0.53s | 1.2%) | Gilroy Gators Swim Team | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 170 | Kaimana Hashimoto | 42.66 | 10 | BB Min | A: 42.09 (+0.57s | 1.3%) | Splash Aquatics | 04/18/2026 | 44th Annual Harry Mamizuka Invitational | |
| 171 | Tatsumasa Sekine | 42.68 | 9 | BB Min | A: 42.09 (+0.59s | 1.4%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 172 | Reagan Wilsey | 42.70 | 10 | BB Min | A: 42.09 (+0.61s | 1.4%) | Palo Alto Stanford Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 173 | Orion Blue-Smith | 42.71 | 10 | BB Min | A: 42.09 (+0.62s | 1.5%) | Palo Alto Stanford Aquatics | 12/20/2025 | 2025 PASA Winter Frolic Meet @ PALY HS | |
| 174 | Oliver Shalvey | 42.72 | 10 | BB Min | A: 42.09 (+0.63s | 1.5%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 175 | Bruce Asmega | 42.73 | 10 | BB Min | A: 42.09 (+0.64s | 1.5%) | Pacifica Sea Lions | 03/07/2026 | BAC Race To AGCs | |
| 176 | Jackson Staples | 42.75 | 10 | BB Min | A: 42.09 (+0.66s | 1.5%) | Las Cruces Aquatic Team | 02/13/2026 | 2026 BD Arctic BLAST Swim Meet | |
| 177 | Henry Goddard | 42.75 | 10 | BB Min | A: 42.09 (+0.66s | 1.5%) | Cascadia Swimming | 08/01/2025 | Big Kahuna 2025 | |
| 178 | Emilio Balcazar | 42.80 | 10 | BB Min | A: 42.09 (+0.71s | 1.7%) | Centro Acuatico Universitario | 12/19/2025 | 2025 BD Leo Cancellare Memorial Swim Meet | |
| 179 | Peter Hofman | 42.81 | 10 | BB Min | A: 42.09 (+0.72s | 1.7%) | Cascade Swim Club | 03/07/2026 | 2026 PDST Mar Pentathlon Last Chance Approved | |
| 180 | Zuriel Cariazo | 42.83 | 10 | BB Min | A: 42.09 (+0.74s | 1.7%) | Montrose Marlins Swim Club | 05/16/2026 | 2026 CO Sopris FAST Challenge | |
| 181 | Jaden Shin | 42.83 | 10 | BB Min | A: 42.09 (+0.74s | 1.7%) | Stingray Swim Team | 02/20/2026 | 2026 PN SRST Champs Qualifier Approved | |
| 182 | Mason Nguyen | 42.84 | 10 | BB Min | A: 42.09 (+0.75s | 1.8%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 183 | Ryan Xie | 42.88 | 10 | BB Min | A: 42.09 (+0.79s | 1.8%) | Cascadia Swimming | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 184 | Yupeng Wang | 42.89 | 10 | BB Min | A: 42.09 (+0.80s | 1.9%) | Monterey Park Manta Rays | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 185 | Yeim Jung | 42.90 | 10 | BB Min | A: 42.09 (+0.81s | 1.9%) | Wave Aquatics | 06/19/2026 | 2026 PN SRST Summer Invitational Approved | |
| 186 | Aiden Mulcahy | 42.91 | 10 | BB Min | A: 42.09 (+0.82s | 1.9%) | Aulea Swim Club | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 187 | Graham Terzer | 42.92 | 10 | BB Min | A: 42.09 (+0.83s | 1.9%) | The Spartans of La Canada | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 188 | Stewart Bye | 42.96 | 10 | BB Min | A: 42.09 (+0.87s | 2.0%) | Corvallis Aquatic Team | 12/12/2025 | 2025 OR HEAT Age Group Jubilee | |
| 189 | Asher Young | 42.96 | 10 | BB Min | A: 42.09 (+0.87s | 2.0%) | Terrapins Swim Team | 03/20/2026 | SCY Spring Age Group Championships | |
| 190 | Nikoloz Zhorzholiani | 42.97 | 10 | BB Min | A: 42.09 (+0.88s | 2.0%) | Seattle Metropolitan Aquatic C | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
| 191 | Preston Tran | 43.03 | 10 | BB Min | A: 42.09 (+0.94s | 2.2%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 192 | Ashton Chen | 43.03 | 10 | BB Min | A: 42.09 (+0.94s | 2.2%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 193 | Logan Yip | 43.03 | 10 | BB Min | A: 42.09 (+0.94s | 2.2%) | South San Francisco Aquatics | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 194 | Charles Tan | 43.10 | 10 | BB Min | A: 42.09 (+1.01s | 2.3%) | Eastside Aquatic Swim Team | 06/19/2026 | 2026 PN SRST Summer Invitational Approved | |
| 195 | Robert Mello | 43.13 | 10 | BB Min | A: 42.09 (+1.04s | 2.4%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 196 | Brian Chou | 43.13 | 9 | BB Min | A: 42.09 (+1.04s | 2.4%) | Irvine Novaquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 197 | Paxton Marvray | 43.15 | 10 | BB Min | A: 42.09 (+1.06s | 2.5%) | Sawtooth Aquatic Club | 12/20/2025 | 2025 BY Candy Cane Invitational | |
| 198 | Maochen Tan | 43.17 | 10 | BB Min | A: 42.09 (+1.08s | 2.5%) | Mission Viejo Nadadores | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 199 | Luke Chai | 43.17 | 9 | BB Min | A: 42.09 (+1.08s | 2.5%) | Pleasanton Seahawks | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 200 | Dylan Tian | 43.18 | 8 | BB Min | A: 42.09 (+1.09s | 2.5%) | Santa Clara Swim Club | 03/28/2026 | 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.