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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Oliver Bao | 17.92 | 10 | AAAA Min | Seattle Metropolitan Aquatic C | 05/31/2025 | 2025 PN VAST Summer Sprints And Distance Chal | ||
| 2 | Robert Legg | 33.85 | 10 | AAAA Min | Pleasanton Seahawks | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | ||
| 3 | Declan Wang | 34.54 | 10 | AAAA Min | Aquazot Swim Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | ||
| 4 | Ryan Latronica | 35.27 | 10 | AAAA Min | Hills Hurricane Swimming | 07/30/2026 | Long Course Far Westerns | ||
| 5 | Trevor Lam | 35.73 | 9 | AAAA Min | Dare Aquatics | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | ||
| 6 | Rubix Szolusha | 35.78 | 10 | AAAA Min | Santa Clara Swim Club | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | ||
| 7 | Alexander Kovnatsky | 35.91 | 10 | AAAA Min | Orinda Aquatics | 07/30/2026 | Long Course Far Westerns | ||
| 8 | Paxton Goldsborough | 36.03 | 10 | AAAA Min | Academy Swim Club | 07/16/2026 | 2026 HISI LCM Championships | ||
| 9 | Luka McGrath | 36.15 | 10 | AAAA Min | Multnomah Athletic Club | 07/05/2025 | Pendleton Open 2025 | ||
| 10 | Jefferson Chiang | 36.39 | 10 | AAAA Min | Irvine Novaquatics | 06/11/2026 | 2026 SCS June AG Invite | ||
| 11 | Mason Ryu | 36.45 | 10 | AAAA Min | Klg Sports Swim Team | 06/11/2026 | ARMADA 2026 SCS June AG Invite | ||
| 12 | Holten Lawrence | 36.50 | 10 | AAAA Min | The Dalles Swim Team | 08/01/2026 | 2026 LA Summer Sunset | ||
| 13 | Isaac Dai | 36.53 | 9 | AAAA Min | Mission Viejo Nadadores | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | ||
| 14 | Jaden Dao | 36.79 | 9 | AAAA Min | Dare Aquatics | 06/11/2026 | ARMADA 2026 SCS June AG Invite | ||
| 15 | Aaron Niu | 36.82 | 10 | AAAA Min | Flying Fish Swim Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | ||
| 16 | Jack Armbruster | 36.85 | 10 | AAAA Min | San Clemente Aquatic Team | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | ||
| 17 | Craig Thompson | 37.35 | 10 | AAA Min | AAAA: 36.99 (+0.36s | 1.0%) | San Diego Imperial All Star TM | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 18 | Thomas Sedano | 37.39 | 10 | AAA Min | AAAA: 36.99 (+0.40s | 1.1%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 19 | Andy Tran | 37.41 | 10 | AAA Min | AAAA: 36.99 (+0.42s | 1.1%) | Seattle Metropolitan Aquatic C | 07/23/2026 | 2026 PN 12 U Long Course Championships Appro | |
| 20 | Guanlin Chen | 37.42 | 10 | AAA Min | AAAA: 36.99 (+0.43s | 1.1%) | Brea Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 21 | Walker Lewis | 37.59 | 10 | AAA Min | AAAA: 36.99 (+0.60s | 1.6%) | Excel Aquatics | 07/17/2026 | 2026 SE Southeastern Summer LC Championships | |
| 22 | Koku Saddawi-Banno | 37.63 | 10 | AAA Min | AAAA: 36.99 (+0.64s | 1.7%) | Jbarracudas Swim Team | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 23 | Ethan Qu | 37.64 | 10 | AAA Min | AAAA: 36.99 (+0.65s | 1.7%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 24 | Matvey Fadeev | 37.70 | 10 | AAA Min | AAAA: 36.99 (+0.71s | 1.9%) | Issaquah Swim Team | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 25 | Zhecheng Zhu | 37.71 | 10 | AAA Min | AAAA: 36.99 (+0.72s | 1.9%) | Irvine Novaquatics | 06/12/2025 | 2025 June Age Group Invite | |
| 26 | Matthew Zhao | 37.76 | 10 | AAA Min | AAAA: 36.99 (+0.77s | 2.0%) | Brea Aquatics | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 27 | Elliott Ganancial | 37.77 | 10 | AAA Min | AAAA: 36.99 (+0.78s | 2.1%) | Hawaii Swimming Club | 07/16/2026 | 2026 HISI LCM Championships | |
| 28 | Preston Tran | 37.82 | 10 | AAA Min | AAAA: 36.99 (+0.83s | 2.2%) | Irvine Novaquatics | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 29 | Hugo Linowski | 37.91 | 10 | AAA Min | AAAA: 36.99 (+0.92s | 2.4%) | Olympic Cascade Aquatics | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 30 | Dylan Briley | 37.92 | 10 | AAA Min | AAAA: 36.99 (+0.93s | 2.5%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 31 | Kai-Chen Lin | 38.06 | 9 | AAA Min | AAAA: 36.99 (+1.07s | 2.8%) | Irvine Novaquatics | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 32 | Luke Chai | 38.07 | 10 | AAA Min | AAAA: 36.99 (+1.08s | 2.8%) | Pleasanton Seahawks | 07/30/2026 | Long Course Far Westerns | |
| 33 | Alexander Yampolsky | 38.08 | 10 | AAA Min | AAAA: 36.99 (+1.09s | 2.9%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 34 | Nicholas Liu | 38.12 | 10 | AAA Min | AAAA: 36.99 (+1.13s | 3.0%) | Alto Swim Club | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 35 | Lucas Pan | 38.16 | 9 | AAA Min | AAAA: 36.99 (+1.17s | 3.1%) | Santa Clara Swim Club | 06/27/2026 | 2026 Santa Clara LC Race To Age Group Champs | |
| 36 | Blake Bardenhagen | 38.23 | 10 | AAA Min | AAAA: 36.99 (+1.24s | 3.2%) | Island Aquatics | 07/16/2026 | 2026 HISI LCM Championships | |
| 37 | Hongjie Xiao | 38.26 | 9 | AAA Min | AAAA: 36.99 (+1.27s | 3.3%) | Irvine Novaquatics | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 38 | Mason Nguyen | 38.34 | 10 | AAA Min | AAAA: 36.99 (+1.35s | 3.5%) | Aquazot Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 39 | Aurelius Lien | 38.53 | 9 | AAA Min | AAAA: 36.99 (+1.54s | 4.0%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 40 | Caleb Stone | 38.55 | 10 | AAA Min | AAAA: 36.99 (+1.56s | 4.0%) | Bellingham Bay Swim Team | 07/23/2026 | 2026 PN 12 U Long Course Championships Appro | |
| 41 | Chase Witt | 38.56 | 10 | AAA Min | AAAA: 36.99 (+1.57s | 4.1%) | Gold\\\\\\'s Aquatics Club (Camas) | 04/25/2026 | GACC Spring Invitational | |
| 42 | Owen Newton | 38.70 | 10 | AAA Min | AAAA: 36.99 (+1.71s | 4.4%) | SwimNation Aquatics Programs | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 43 | Aiden Chung | 38.75 | 10 | AAA Min | AAAA: 36.99 (+1.76s | 4.5%) | Patriot Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 44 | Branimir Petkov | 38.82 | 10 | AAA Min | AAAA: 36.99 (+1.83s | 4.7%) | Evolution Racing Club | 06/11/2026 | 2026 SCS June AG Invite | |
| 45 | Dongxin Xian | 38.83 | 10 | AAA Min | AAAA: 36.99 (+1.84s | 4.7%) | Arcadia Riptides Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 46 | Tatsumasa Sekine | 38.87 | 9 | AAA Min | AAAA: 36.99 (+1.88s | 4.8%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 47 | Yuning Huang | 38.87 | 10 | AAA Min | AAAA: 36.99 (+1.88s | 4.8%) | Rose Bowl Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 48 | Paxton Marvray | 38.89 | 10 | AAA Min | AAAA: 36.99 (+1.90s | 4.9%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 49 | Leon Escarcega Hernandez | 38.90 | 10 | AAA Min | AAAA: 36.99 (+1.91s | 4.9%) | Halcones Marinos Capn | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 50 | Brayden Nguyen | 38.95 | 10 | AAA Min | AAAA: 36.99 (+1.96s | 5.0%) | San Jose Goosemonkeys | 07/30/2026 | Long Course Far Westerns | |
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.