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 | |
|---|---|---|---|---|---|---|---|---|---|
| 501 | Nicholas Stefan | 46.75 | 10 | BB Min | A: 43.09 (+3.66s | 7.8%) | Teamgoldusa | 07/10/2026 | 2026 NNA Silver State Championships | |
| 502 | Wesley Clemens | 46.76 | 10 | BB Min | A: 43.09 (+3.67s | 7.8%) | Bay Club Aquatics | 04/24/2026 | 2026 SI PS ABB Meet B Group | |
| 503 | Aiden Mao | 46.76 | 10 | BB Min | A: 43.09 (+3.67s | 7.8%) | Pacific Dragons Swim Team | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 504 | Logan Liew | 46.76 | 10 | BB Min | A: 43.09 (+3.67s | 7.8%) | Streamliner Aquatics | 07/18/2025 | 2025 LCM Summer Championships | |
| 505 | Daniel Heilman | 46.76 | 10 | BB Min | A: 43.09 (+3.67s | 7.8%) | San Francisco Seals Swim Team | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 506 | David Rivera | 46.77 | 10 | BB Min | A: 43.09 (+3.68s | 7.9%) | Almaden Riptide | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 507 | Miles Wang | 46.82 | 9 | BB Min | A: 43.09 (+3.73s | 8.0%) | Pleasanton Seahawks | 05/23/2026 | 2026 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 508 | Nikshay Chandrasekar | 46.83 | 10 | BB Min | A: 43.09 (+3.74s | 8.0%) | Pro Swimming | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 509 | Kolten Graver | 46.84 | 10 | BB Min | A: 43.09 (+3.75s | 8.0%) | Life Time Colorado Swim Club | 06/19/2026 | 2026 CO Falfins Long Course Open | |
| 510 | Yunhan Song | 46.84 | 10 | BB Min | A: 43.09 (+3.75s | 8.0%) | Eastside Aquatic Swim Team | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 511 | Luther Kim | 46.85 | 10 | BB Min | A: 43.09 (+3.76s | 8.0%) | Sea to Desert Swim Association | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 512 | Johnathan Weninger | 46.86 | 10 | BB Min | A: 43.09 (+3.77s | 8.0%) | Legacy Aquatics | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 513 | Lucas Richardson | 46.88 | 10 | BB Min | A: 43.09 (+3.79s | 8.1%) | Hawaii Swimming Club | 07/03/2026 | 2026 Keo Nakama Swim Meet | |
| 514 | David Renko | 46.88 | 9 | BB Min | A: 43.09 (+3.79s | 8.1%) | Wasatch Front Fish Market | 06/27/2025 | WFFM Red White And Black 2025 | |
| 515 | Luke Xu | 46.89 | 8 | BB Min | A: 43.09 (+3.80s | 8.1%) | Seattle Metropolitan Aquatic C | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 516 | Yichen Wang | 46.90 | 9 | BB Min | A: 43.09 (+3.81s | 8.1%) | Alto Swim Club | 05/02/2026 | Alto Spring Jam CBA | |
| 517 | Bennett Kohlmeyer | 46.90 | 10 | BB Min | A: 43.09 (+3.81s | 8.1%) | Life Time Colorado Swim Club | 04/26/2025 | 2025 CO FST Spring LC Fever | |
| 518 | Henry O'Shea | 46.91 | 9 | BB Min | A: 43.09 (+3.82s | 8.1%) | Billings YMCA | 06/12/2026 | 2026 RST Coach Beth Rushmore Classic | |
| 519 | Ryan Lee | 46.91 | 10 | BB Min | A: 43.09 (+3.82s | 8.1%) | Highlands Ranch Aquatics | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 520 | Leon Ye | 46.94 | 10 | BB Min | A: 43.09 (+3.85s | 8.2%) | Issaquah Swim Team | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 521 | Jayke Hung | 46.95 | 10 | BB Min | A: 43.09 (+3.86s | 8.2%) | Bellevue Club Swim Team | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 522 | Kendrick Cui | 46.98 | 8 | BB Min | A: 43.09 (+3.89s | 8.3%) | West Coast Aquatics | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 523 | Senge Laka | 46.98 | 9 | BB Min | A: 43.09 (+3.89s | 8.3%) | Cascadia Swimming | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 524 | Miles VanderLinden | 46.99 | 9 | BB Min | A: 43.09 (+3.90s | 8.3%) | Truckee-Tahoe Swim Team | 05/22/2026 | 2026 Intermountain Classic Long Course Meet | |
| 525 | Fedor Evstigneev | 47.00 | 9 | BB Min | A: 43.09 (+3.91s | 8.3%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 526 | Adam Alkhayru | 47.01 | 9 | BB Min | A: 43.09 (+3.92s | 8.3%) | Reno Aquatic Club | 07/10/2026 | 2026 NNA Silver State Championships | |
| 527 | Sebastian Dudenko | 47.03 | 9 | BB Min | A: 43.09 (+3.94s | 8.4%) | Alto Swim Club | 07/25/2026 | Alto Last Splash | |
| 528 | Octavio Bejarano Barraza | 47.06 | 10 | BB Min | A: 43.09 (+3.97s | 8.4%) | Centro Acuatico Universitario | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | |
| 529 | Giovanni Bigelow | 47.06 | 10 | BB Min | A: 43.09 (+3.97s | 8.4%) | Thunderbird Aquatic Club | 06/19/2026 | 2026 IE VS Starlight Open (USAS) | |
| 530 | Lukas Zazhitskiy | 47.08 | 9 | BB Min | A: 43.09 (+3.99s | 8.5%) | Highlands Ranch Aquatics | 06/05/2026 | 2026 CO NJ Summer Solstice Invite | |
| 531 | Cayden Lin | 47.09 | 10 | BB Min | A: 43.09 (+4.00s | 8.5%) | Rosemead Rapids | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 532 | Alexander Zhurid | 47.10 | 9 | BB Min | A: 43.09 (+4.01s | 8.5%) | Bellevue Club Swim Team | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 533 | Robert Kolesnik | 47.12 | 10 | BB Min | A: 43.09 (+4.03s | 8.6%) | Bulldog Swim Club | 07/25/2026 | Alto Last Splash | |
| 534 | Jeremiah Lee | 47.12 | 10 | BB Min | A: 43.09 (+4.03s | 8.6%) | Chinook Aquatic Club | 05/28/2026 | 2026 IE VS Apple Capital | |
| 535 | Aiden Huang | 47.15 | 10 | BB Min | A: 43.09 (+4.06s | 8.6%) | DeAnza Cupertino Aquatics | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 536 | Elliott Lee Chan Kam | 47.15 | 10 | BB Min | A: 43.09 (+4.06s | 8.6%) | Alto Swim Club | 06/20/2026 | Alto Summer Swelter | |
| 537 | Neal Hiuga | 47.16 | 9 | BB Min | A: 43.09 (+4.07s | 8.6%) | California Gold | 05/23/2026 | 2026 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 538 | Aleksander Zuev | 47.16 | 10 | BB Min | A: 43.09 (+4.07s | 8.6%) | Foothills Swim Team | 06/26/2026 | 2026 CO Zone 2 District Meet AAC | |
| 539 | Nguyen Tran | 47.17 | 8 | BB Min | A: 43.09 (+4.08s | 8.6%) | Olympic Cascade Aquatics | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 540 | Harvey Yuan | 47.18 | 8 | BB Min | A: 43.09 (+4.09s | 8.7%) | Pacific Swim | 04/24/2026 | 2026 SI PS ABB Meet Group A | |
| 541 | Ryan Ferguson | 47.21 | 10 | BB Min | A: 43.09 (+4.12s | 8.7%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 542 | Kensington Hull | 47.21 | 10 | BB Min | A: 43.09 (+4.12s | 8.7%) | Heartland Swim Assoc | 05/23/2026 | 2026 SI HSA A All Ages NTS May 23 24 | |
| 543 | Ethan Holmgren | 47.24 | 10 | BB Min | A: 43.09 (+4.15s | 8.8%) | North Jeffco Swim Team | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 544 | Kason Cullen | 47.26 | 10 | BB Min | A: 43.09 (+4.17s | 8.8%) | Aloha Aquatics Association | 07/16/2026 | 2026 HISI LCM Championships | |
| 545 | Ryan Hu | 47.26 | 8 | BB Min | A: 43.09 (+4.17s | 8.8%) | Wave Aquatics | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 546 | Nathan Nguyen | 47.27 | 10 | BB Min | A: 43.09 (+4.18s | 8.8%) | San Jose Goosemonkeys | 06/20/2026 | Zone 1 South Swim Under The Stars | |
| 547 | Donavan Sy | 47.28 | 9 | BB Min | A: 43.09 (+4.19s | 8.9%) | Socal Aquatics Association | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 548 | Ian Susanto | 47.29 | 9 | BB Min | A: 43.09 (+4.20s | 8.9%) | Legacy Aquatics | 11/01/2025 | Oregon City Fall Open 2025 | |
| 549 | Lucas DeGaetani | 47.35 | 9 | BB Min | A: 43.09 (+4.26s | 9.0%) | Aquawolves Swimming | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 550 | Lucas Patrick | 47.39 | 10 | BB Min | A: 43.09 (+4.30s | 9.1%) | Highlands Ranch Aquatics | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
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.