Western Zone Zone Boys 10 & under - 50 M Back
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 | Dashel Archer | 48.40 | 10 | BB Min | A: 43.09 (+5.31s | 11.0%) | Evergreen Hurricanes | 06/18/2026 | 2026 CO Grand Junction Invitational | |
| 602 | Jack Cohen | 48.41 | 10 | BB Min | A: 43.09 (+5.32s | 11.0%) | Class Aquatics | 06/11/2026 | 2026 SCS June AG Invite CANY | |
| 603 | Bruce Chou | 48.41 | 10 | BB Min | A: 43.09 (+5.32s | 11.0%) | Jbarracudas Swim Team | 06/06/2026 | 2026 SI JBST SPLASH DASH MAX | |
| 604 | Mars Meihack | 48.41 | 9 | BB Min | A: 43.09 (+5.32s | 11.0%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 605 | Luther Kim | 48.44 | 10 | BB Min | A: 43.09 (+5.35s | 11.0%) | Sea to Desert Swim Association | 06/06/2026 | 2026 SI SOL Splash And Dash Max Jun 6 7 | |
| 606 | Kawika Cox | 48.46 | 10 | BB Min | A: 43.09 (+5.37s | 11.1%) | Kamehameha Swim Club | 06/06/2026 | 2026 15th Annual Wada Rainbow Invitational | |
| 607 | Hohyeon Cho | 48.47 | 10 | BB Min | A: 43.09 (+5.38s | 11.1%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 608 | Jasper Zhong | 48.47 | 8 | BB Min | A: 43.09 (+5.38s | 11.1%) | Seattle Metropolitan Aquatic C | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 609 | Ethan Yang | 48.47 | 8 | BB Min | A: 43.09 (+5.38s | 11.1%) | Alto Swim Club | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 610 | Joseph Leach | 48.47 | 9 | BB Min | A: 43.09 (+5.38s | 11.1%) | Highlands Ranch Aquatics | 06/05/2026 | 2026 CO NJ Summer Solstice Invite | |
| 611 | Grayson Julien | 48.50 | 10 | BB Min | A: 43.09 (+5.41s | 11.2%) | South Valley Makos | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 612 | Mo Chen | 48.50 | 9 | BB Min | A: 43.09 (+5.41s | 11.2%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 613 | Rhys Mehta | 48.50 | 9 | BB Min | A: 43.09 (+5.41s | 11.2%) | Tualatin Hills Swim Club | 06/12/2026 | 2026 THSC June Open | |
| 614 | River Wilkinson | 48.54 | 10 | BB Min | A: 43.09 (+5.45s | 11.2%) | North Coast Aquatics | 05/23/2026 | SI 2026 TAC CSTE All Ages NTS Meet | |
| 615 | William Rickert | 48.56 | 8 | BB Min | A: 43.09 (+5.47s | 11.3%) | South Orange County Aquatics | 06/11/2026 | 2026 SCS June AG Invite | |
| 616 | Boone Day | 48.56 | 8 | BB Min | A: 43.09 (+5.47s | 11.3%) | Bend Swim Club | 05/08/2026 | Bend Swim Club May Invitational 2026 | |
| 617 | Christopher Scheetz | 48.58 | 9 | BB Min | A: 43.09 (+5.49s | 11.3%) | COSA Swimming | 06/05/2026 | 2026 COSA Long Couse Open | |
| 618 | William Song | 48.60 | 8 | BB Min | A: 43.09 (+5.51s | 11.3%) | Seattle Metropolitan Aquatic C | 05/28/2026 | 2026 IE VS Apple Capital | |
| 619 | Jacob Chen | 48.60 | 9 | BB Min | A: 43.09 (+5.51s | 11.3%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 620 | Daniel Gerasimov | 48.62 | 8 | BB Min | A: 43.09 (+5.53s | 11.4%) | Los Gatos Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 621 | Philip McDevitt | 48.62 | 10 | BB Min | A: 43.09 (+5.53s | 11.4%) | Chinook Aquatic Club | 06/12/2026 | 2026 THSC June Open | |
| 622 | Anthony Ma | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Cottonwood Heights Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 623 | Avery Fogarty | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Maverick Aquatics | 06/18/2026 | 2026 CO Grand Junction Invitational | |
| 624 | Moses Wang | 48.64 | 10 | BB Min | A: 43.09 (+5.55s | 11.4%) | Bainbridge Island Swim Club | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 625 | Bennett Burtz | 48.64 | 9 | BB Min | A: 43.09 (+5.55s | 11.4%) | Colorado Stingrays Swim Team | 06/26/2026 | 2026 CO Zone 2 District Meet DU | |
| 626 | Finn Swarts | 48.67 | 8 | BB Min | A: 43.09 (+5.58s | 11.5%) | North Jeffco Swim Team | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 627 | Felix Franson | 48.68 | 9 | BB Min | A: 43.09 (+5.59s | 11.5%) | Pikes Peak Athletics | 06/19/2026 | 2026 CO Falfins Long Course Open | |
| 628 | Robert Kolesnik | 48.68 | 10 | BB Min | A: 43.09 (+5.59s | 11.5%) | Bulldog Swim Club | 06/12/2026 | BAC Long Course | |
| 629 | Hogan Crow | 48.70 | 10 | BB Min | A: 43.09 (+5.61s | 11.5%) | Unattached | 04/17/2026 | 2026 Shark Attack Copied | |
| 630 | Brandon Son | 48.70 | 8 | BB Min | A: 43.09 (+5.61s | 11.5%) | Columbia River Swim Team | 06/07/2025 | 2025 OR CRST Summer Blast 2 | |
| 631 | Ethan Liu | 48.72 | 9 | BB Min | A: 43.09 (+5.63s | 11.6%) | Highlands Ranch Aquatics | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 632 | Zhencheng Xu | 48.73 | 10 | BB Min | A: 43.09 (+5.64s | 11.6%) | Alto Swim Club | 06/20/2026 | Alto Summer Swelter | |
| 633 | Charles Heffernan | 48.74 | 8 | BB Min | A: 43.09 (+5.65s | 11.6%) | Legacy Aquatics | 06/12/2026 | 73rd Ted Walker Invitational 2026 | |
| 634 | Cameron Lim | 48.74 | 9 | BB Min | A: 43.09 (+5.65s | 11.6%) | Seattle Metropolitan Aquatic C | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 635 | Owen Zhuang | 48.77 | 10 | BB Min | A: 43.09 (+5.68s | 11.6%) | Santa Clara Swim Club | 07/20/2024 | Alto Last Splash Invitational | |
| 636 | Ryan Song | 48.80 | 9 | BB Min | A: 43.09 (+5.71s | 11.7%) | Wasc | 06/11/2026 | 2026 SCS June AG Invite | |
| 637 | Vincent Kim | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Hydro Aquatics Club | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 638 | Jamie Pan | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 639 | Milo Chan | 48.83 | 9 | BB Min | A: 43.09 (+5.74s | 11.8%) | Seattle Metropolitan Aquatic C | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 640 | Patrick Keene | 48.83 | 9 | BB Min | A: 43.09 (+5.74s | 11.8%) | Univ. of Denver Hilltoppers | 04/24/2026 | 2026 CO Arena Catch Me If You Can | |
| 641 | Leo Liao | 48.86 | 10 | BB Min | A: 43.09 (+5.77s | 11.8%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 642 | Declan Sederholm | 48.87 | 10 | BB Min | A: 43.09 (+5.78s | 11.8%) | Hilltop Aquatic Swim Team | 06/21/2025 | 2025 UT HAST RWB Invitational | |
| 643 | Dylan Rapp | 48.88 | 9 | BB Min | A: 43.09 (+5.79s | 11.8%) | Front Range Barracudas | 05/23/2026 | 2026 CO CUDA Vs AQUA Dual | |
| 644 | Swadhin Khadka | 48.89 | 8 | BB Min | A: 43.09 (+5.80s | 11.9%) | Tornadoes Swim Team | 06/12/2026 | 73rd Ted Walker Invitational 2026 | |
| 645 | Isaac Engelbart | 48.94 | 10 | BB Min | A: 43.09 (+5.85s | 12.0%) | Stingray Swim Team | 06/13/2026 | 2026 PN IST June Invtational Approved | |
| 646 | Piradon Pukrittayakamee | 48.96 | 9 | BB Min | A: 43.09 (+5.87s | 12.0%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 647 | Grayson Bennett | 48.96 | 8 | BB Min | A: 43.09 (+5.87s | 12.0%) | Spokane Waves Aquatic Team | 04/17/2026 | 2026 Shark Attack Copied | |
| 648 | Rhys Beyeler-Evans | 48.97 | 10 | BB Min | A: 43.09 (+5.88s | 12.0%) | Piedmont Swim Team | 04/25/2026 | San Ramon Valley Aquatics Long Course C B BB+ | |
| 649 | Charles Fikhman | 48.97 | 9 | BB Min | A: 43.09 (+5.88s | 12.0%) | Pacific Swim | 04/24/2026 | 2026 SI PS ABB Meet Group A | |
| 650 | Ayansh Sinha | 49.01 | 10 | BB Min | A: 43.09 (+5.92s | 12.1%) | Pro Swimming | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
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.