Western Zone Zone Boys 10 & under - 50 Y Free
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 601 | Thomas Cooke | 34.19 | 9 | BB Min | A: 31.09 (+3.10s | 9.1%) | Aptos Cabrillo Swim Club | 07/18/2025 | CVAL | |
| 602 | Mo Chen | 34.19 | 9 | BB Min | A: 31.09 (+3.10s | 9.1%) | Wave Aquatics | 06/19/2026 | 2026 PN SRST Summer Invitational Approved | |
| 603 | Chenrui Cui | 34.19 | 8 | BB Min | A: 31.09 (+3.10s | 9.1%) | Unattached | 02/20/2026 | 2026 PN SRST Champs Qualifier Approved | |
| 604 | Cameron Watrous | 34.20 | 9 | BB Min | A: 31.09 (+3.11s | 9.1%) | Bellevue Club Swim Team | 06/19/2026 | 2026 PN SRST Summer Invitational Approved | |
| 605 | Michael Campbell | 34.20 | 10 | BB Min | A: 31.09 (+3.11s | 9.1%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 606 | Luke Chaikriangkrai | 34.25 | 9 | BB Min | A: 31.09 (+3.16s | 9.2%) | Pro Swimming | 01/17/2026 | 2026 PN SMAC Winter Invitational Approved | |
| 607 | Alejandro Gonzalez | 34.25 | 9 | BB Min | A: 31.09 (+3.16s | 9.2%) | Los Angeles Swim Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 608 | Porter Lander | 34.26 | 10 | BB Min | A: 31.09 (+3.17s | 9.3%) | Roseburg | 02/13/2026 | 2026 OR HS 6A 7 | |
| 609 | Rufus Tang | 34.31 | 10 | BB Min | A: 31.09 (+3.22s | 9.4%) | Pacific Dragons Swim Team | 01/24/2026 | 2026 PN PDST Winter Invitational Meet Approv | |
| 610 | Dylan Tian | 34.31 | 8 | BB Min | A: 31.09 (+3.22s | 9.4%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 611 | Thomas Halford | 34.31 | 10 | BB Min | A: 31.09 (+3.22s | 9.4%) | Pikes Peak Athletics | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 612 | Lucas Richardson | 34.31 | 10 | BB Min | A: 31.09 (+3.22s | 9.4%) | Hawaii Swimming Club | 03/07/2026 | 2026 HI Junior Age Group SCY Championship | |
| 613 | Hudson Porter | 34.32 | 10 | BB Min | A: 31.09 (+3.23s | 9.4%) | Wave Aquatics | 02/27/2026 | 2026 PN February AGI, Division 2 Approved | |
| 614 | Isak Breckon | 34.32 | 10 | BB Min | A: 31.09 (+3.23s | 9.4%) | South Davis Aquatics Team | 10/25/2025 | SDAT October 2025 Intrasquad Meet | |
| 615 | Aiden Huang | 34.32 | 10 | BB Min | A: 31.09 (+3.23s | 9.4%) | DeAnza Cupertino Aquatics | 10/25/2025 | 2025 SUNN Fall Classic | |
| 616 | Brandon Son | 34.33 | 8 | BB Min | A: 31.09 (+3.24s | 9.4%) | Columbia River Swim Team | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 617 | Jonathan Chen | 34.33 | 9 | BB Min | A: 31.09 (+3.24s | 9.4%) | California Dolphins Swim Team | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 618 | Flynn Chen | 34.34 | 10 | BB Min | A: 31.09 (+3.25s | 9.5%) | DeAnza Cupertino Aquatics | 03/07/2026 | DACA CBA Meet | |
| 619 | Samuel Diemert | 34.36 | 9 | BB Min | A: 31.09 (+3.27s | 9.5%) | Mission Aurora Colorado Swimmi | 03/13/2026 | Mile High Championship Invitational | |
| 620 | Roman Tsikalov | 34.37 | 10 | BB Min | A: 31.09 (+3.28s | 9.5%) | Otter Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 621 | Brady Lindauer | 34.37 | 10 | BB Min | A: 31.09 (+3.28s | 9.5%) | Unattached | 10/25/2025 | 2025 SUNN Fall Classic | |
| 622 | Nicolas Pataky | 34.38 | 10 | BB Min | A: 31.09 (+3.29s | 9.6%) | Palo Alto Stanford Aquatics | 11/15/2025 | De Anza Cupertino Aquatics CBA+ Meet | |
| 623 | Aaron Wang | 34.39 | 9 | BB Min | A: 31.09 (+3.30s | 9.6%) | Brea Aquatics | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 624 | Miles Wood | 34.40 | 9 | BB Min | A: 31.09 (+3.31s | 9.6%) | Dart Swimming | 11/09/2024 | Folsom Classic 2024 | |
| 625 | Blaze Garcia | 34.40 | 10 | BB Min | A: 31.09 (+3.31s | 9.6%) | Pueblo County Swim Team | 04/25/2026 | 2026 CO COSA Spring SC Kick Off | |
| 626 | Kai Mihov | 34.40 | 10 | BB Min | A: 31.09 (+3.31s | 9.6%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 627 | Lok Zhang | 34.40 | 10 | BB Min | A: 31.09 (+3.31s | 9.6%) | Pacific Dragons Swim Team | 02/07/2026 | 2026 PN IST Feb Winter Invitational Approved | |
| 628 | Watson Xie | 34.41 | 10 | BB Min | A: 31.09 (+3.32s | 9.6%) | Chinook Aquatic Club | 02/27/2026 | 2026 PN February AGI, Division 2 Approved | |
| 629 | Connor Mahoney | 34.41 | 5 | BB Min | A: 31.09 (+3.32s | 9.6%) | Terrapins Swim Team | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 630 | Eddie Bi | 34.41 | 9 | BB Min | A: 31.09 (+3.32s | 9.6%) | California Dolphins Swim Team | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 631 | Isaac Marcuson | 34.41 | 10 | BB Min | A: 31.09 (+3.32s | 9.6%) | Aspire Aquatics of Colorado | 01/23/2026 | 2026 CO FAST Winter Open | |
| 632 | Wyatt Chandler | 34.42 | 10 | BB Min | A: 31.09 (+3.33s | 9.7%) | San Dimas Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 633 | Gavin Wong | 34.44 | 9 | BB Min | A: 31.09 (+3.35s | 9.7%) | Daly City Dolphins | 03/07/2026 | BAC Race To AGCs | |
| 634 | Sanders Ford | 34.44 | 9 | BB Min | A: 31.09 (+3.35s | 9.7%) | Las Cruces Aquatic Team | 02/13/2026 | 2026 BD Arctic BLAST Swim Meet | |
| 635 | Ashton Chen | 34.47 | 10 | BB Min | A: 31.09 (+3.38s | 9.8%) | Brea Aquatics | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 636 | Fedor Evstigneev | 34.47 | 9 | BB Min | A: 31.09 (+3.38s | 9.8%) | Santa Clara Swim Club | 12/05/2025 | Zone 1S Year End Age Group Champs Minus Meet | |
| 637 | Shay Jain | 34.47 | 9 | BB Min | A: 31.09 (+3.38s | 9.8%) | Palo Alto Stanford Aquatics | 03/07/2026 | 2026 PASA Last Chance For JO S | |
| 638 | Ivan Smarshchok | 34.48 | 9 | BB Min | A: 31.09 (+3.39s | 9.8%) | King Aquatic Club | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
| 639 | Jaxson Ruoff | 34.49 | 10 | BB Min | A: 31.09 (+3.40s | 9.9%) | Kentridge | 01/11/2025 | 2025 Kentridge HS Invitational BOYS OBSERVED | |
| 640 | Dallas Wilson | 34.50 | 9 | BB Min | A: 31.09 (+3.41s | 9.9%) | North Jeffco Swim Team | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 641 | Vladimir Yegorov | 34.50 | 10 | BB Min | A: 31.09 (+3.41s | 9.9%) | Lake Oswego Swim Club | 03/14/2026 | 2026 John Haring Memorial BC Showdown | |
| 642 | Justin Saucedo | 34.50 | 10 | BB Min | A: 31.09 (+3.41s | 9.9%) | Apex | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 643 | Jack Willey | 34.52 | 10 | BB Min | A: 31.09 (+3.43s | 9.9%) | Almaden Riptide | 02/07/2026 | 2026 PSL Super Finals Invitational | |
| 644 | Owen Laidlaw | 34.54 | 9 | BB Min | A: 31.09 (+3.45s | 10.0%) | Island Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 645 | Finn Swarts | 34.55 | 8 | BB Min | A: 31.09 (+3.46s | 10.0%) | North Jeffco Swim Team | 03/13/2026 | Mile High Championship Invitational | |
| 646 | Theodore Cook | 34.55 | 9 | BB Min | A: 31.09 (+3.46s | 10.0%) | SlipStream Aquatics | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 647 | Mohamed Yosif | 34.55 | 10 | BB Min | A: 31.09 (+3.46s | 10.0%) | Cascade | 01/10/2026 | 2026 Kentridge High School Invitational Obse | |
| 648 | Maxim Gilszmer | 34.56 | 10 | BB Min | A: 31.09 (+3.47s | 10.0%) | South Snohomish Co Dolphins | 04/18/2026 | 2026 PN MMSC Marlins Madness Approved | |
| 649 | Derek Zhu | 34.56 | 9 | BB Min | A: 31.09 (+3.47s | 10.0%) | Chinook Aquatic Club | 03/07/2026 | 2026 PN C March Madness Approved | |
| 650 | Bruce Asmega | 34.56 | 10 | BB Min | A: 31.09 (+3.47s | 10.0%) | Pacifica Sea Lions | 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.