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 | |
|---|---|---|---|---|---|---|---|---|---|
| 451 | 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 | |
| 452 | Neo Perera | 48.42 | 10 | BB Min | A: 43.09 (+5.33s | 11.0%) | Los Altos Mountain View Aquati | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 453 | Ayu Shaik | 48.45 | 10 | BB Min | A: 43.09 (+5.36s | 11.1%) | Apex | 04/17/2026 | 2026 MAC LONG COURSE INVITATIONAL | |
| 454 | 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 | |
| 455 | 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 | |
| 456 | Arwin Safaee | 48.51 | 10 | BB Min | A: 43.09 (+5.42s | 11.2%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 457 | River Wilkinson | 48.54 | 9 | BB Min | A: 43.09 (+5.45s | 11.2%) | North Coast Aquatics | 05/23/2026 | SI 2026 TAC CSTE All Ages NTS Meet | |
| 458 | Boone Day | 48.56 | 7 | BB Min | A: 43.09 (+5.47s | 11.3%) | Bend Swim Club | 05/08/2026 | Bend Swim Club May Invitational 2026 | |
| 459 | Matthew Chen | 48.59 | 10 | BB Min | A: 43.09 (+5.50s | 11.3%) | California Dolphins Swim Team | 05/02/2026 | Alto Spring Jam CBA | |
| 460 | Demian Jarmy | 48.60 | 10 | BB Min | A: 43.09 (+5.51s | 11.3%) | Pleasanton Seahawks | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 461 | Jacob Chen | 48.60 | 9 | BB Min | A: 43.09 (+5.51s | 11.3%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 462 | Cameron Day | 48.62 | 10 | BB Min | A: 43.09 (+5.53s | 11.4%) | Mission Viejo Nadadores | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 463 | Christopher Roeder | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Aspen Swim Club | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 464 | Anthony Ma | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Cottonwood Heights Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 465 | Alexander Rich | 48.64 | 10 | BB Min | A: 43.09 (+5.55s | 11.4%) | Maverick Aquatics | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 466 | 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 | |
| 467 | 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 | |
| 468 | Hogan Crow | 48.70 | 9 | BB Min | A: 43.09 (+5.61s | 11.5%) | Unattached | 04/17/2026 | 2026 Shark Attack Copied | |
| 469 | Rhys Mehta | 48.70 | 9 | BB Min | A: 43.09 (+5.61s | 11.5%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 470 | 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 | |
| 471 | 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 | |
| 472 | 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 | |
| 473 | Aiden Huang | 48.80 | 10 | BB Min | A: 43.09 (+5.71s | 11.7%) | DeAnza Cupertino Aquatics | 05/16/2026 | 2026 DACA LC CBA+ | |
| 474 | 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 | |
| 475 | Jamie Pan | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 476 | Blaze Garcia | 48.83 | 10 | BB Min | A: 43.09 (+5.74s | 11.8%) | Pueblo County Swim Team | 06/19/2025 | 2025 CO Grand Junction Invitational | |
| 477 | 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 | |
| 478 | Leo Liao | 48.86 | 10 | BB Min | A: 43.09 (+5.77s | 11.8%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 479 | 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 | |
| 480 | Giovanni Bigelow | 48.89 | 10 | BB Min | A: 43.09 (+5.80s | 11.9%) | Thunderbird Aquatic Club | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 481 | Rain Liu | 48.96 | 10 | BB Min | A: 43.09 (+5.87s | 12.0%) | Rancho San Dieguito | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 482 | 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 | |
| 483 | 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+ | |
| 484 | 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 | |
| 485 | Arick Yuan | 49.00 | 10 | BB Min | A: 43.09 (+5.91s | 12.1%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 486 | 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 | |
| 487 | Liam Lawson | 49.02 | 10 | BB Min | A: 43.09 (+5.93s | 12.1%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 488 | Ico Tamayo | 49.02 | 9 | BB Min | A: 43.09 (+5.93s | 12.1%) | Cali Piranha Swim Team | 04/24/2026 | 2026 SI PS ABB Meet Group A | |
| 489 | Parker Lozes | 49.04 | 9 | BB Min | A: 43.09 (+5.95s | 12.1%) | Colorado Stingrays Swim Team | 05/15/2026 | 2026 CO NJ Ken Kelley Invite | |
| 490 | Joshua Vitale | 49.04 | 10 | BB Min | A: 43.09 (+5.95s | 12.1%) | Lake Oswego Swim Club | 06/26/2025 | 2025 Howard Jones Open | |
| 491 | Jeremy Lyu | 49.06 | 10 | BB Min | A: 43.09 (+5.97s | 12.2%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 492 | Jayden Chen | 49.07 | 10 | BB Min | A: 43.09 (+5.98s | 12.2%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 493 | Isaac Marcuson | 49.08 | 10 | BB Min | A: 43.09 (+5.99s | 12.2%) | Aspire Aquatics of Colorado | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 494 | Mateo Sison | 49.10 | 10 | BB Min | A: 43.09 (+6.01s | 12.2%) | San Ramon Valley Aquatics | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | |
| 495 | Jay Dai | 49.12 | 10 | BB Min | A: 43.09 (+6.03s | 12.3%) | Alto Swim Club | 05/02/2026 | Alto Spring Jam CBA | |
| 496 | Cameron Lim | 49.14 | 9 | BB Min | A: 43.09 (+6.05s | 12.3%) | Seattle Metropolitan Aquatic C | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 497 | Dhanvin Naviri | 49.15 | 10 | BB Min | A: 43.09 (+6.06s | 12.3%) | The Dolphins Portland Swimming | 04/17/2026 | 2026 MAC LONG COURSE INVITATIONAL | |
| 498 | Teo Dickens | 49.16 | 9 | BB Min | A: 43.09 (+6.07s | 12.3%) | Lake Oswego Swim Club | 04/25/2026 | GACC Spring Invitational | |
| 499 | Aaryan Indurkhya | 49.23 | 9 | BB Min | A: 43.09 (+6.14s | 12.5%) | Issaquah Swim Team | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 500 | Jose Perez | 49.24 | 10 | BB Min | A: 43.09 (+6.15s | 12.5%) | Lincoln City Swim Club | 03/07/2026 | Valley Coast Swim League 2026 | |
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.