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 | |
|---|---|---|---|---|---|---|---|---|---|
| 51 | Mason Ryu | 40.71 | 10 | AA Min | AAA: 38.99 (+1.72s | 4.2%) | Klg Sports Swim Team | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 52 | Lucas Pan | 40.76 | 9 | AA Min | AAA: 38.99 (+1.77s | 4.3%) | Santa Clara Swim Club | 07/31/2025 | 2025 Long Course Far Western Championship | |
| 53 | Nicholas Liu | 40.76 | 9 | AA Min | AAA: 38.99 (+1.77s | 4.3%) | Alto Swim Club | 07/31/2025 | 2025 Long Course Far Western Championship | |
| 54 | Clayton Chester | 40.91 | 10 | AA Min | AAA: 38.99 (+1.92s | 4.7%) | Heartland Swim Assoc | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 55 | Shunsuke Suzuki | 40.93 | 10 | AA Min | AAA: 38.99 (+1.94s | 4.7%) | Palo Alto Stanford Aquatics | 07/31/2025 | 2025 Long Course Far Western Championship | |
| 56 | Preston Tran | 40.99 | 10 | AA Min | AAA: 38.99 (+2.00s | 4.9%) | Irvine Novaquatics | 06/12/2025 | 2025 June Age Group Invite | |
| 57 | Benjamin Du | 41.05 | 10 | AA Min | AAA: 38.99 (+2.06s | 5.0%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 58 | Eliott Jackson | 41.10 | 10 | A Min | AA: 41.09 (+0.01s | 0.0%) | Team Eugene Aquatics | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 59 | Jack Armbruster | 41.12 | 10 | A Min | AA: 41.09 (+0.03s | 0.1%) | San Clemente Aquatic Team | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 60 | Samuel Fuller | 41.13 | 10 | A Min | AA: 41.09 (+0.04s | 0.1%) | Rose Bowl Aquatics | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 61 | Jacob Liu | 41.50 | 10 | A Min | AA: 41.09 (+0.41s | 1.0%) | Trident Swim Club | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 62 | Dongxin Xian | 41.57 | 10 | A Min | AA: 41.09 (+0.48s | 1.2%) | Arcadia Riptides Swim Club | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 63 | Angel Garcia III | 41.59 | 10 | A Min | AA: 41.09 (+0.50s | 1.2%) | Golden West Swim Club | 07/25/2024 | 2024 CA SCS GWSC Summer A G Champs | |
| 64 | Winston Chase | 41.69 | 10 | A Min | AA: 41.09 (+0.60s | 1.4%) | Utah Valley Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 65 | Stryker Fonseca | 41.73 | 10 | A Min | AA: 41.09 (+0.64s | 1.5%) | Barracuda Aquatic Club | 07/17/2025 | 2025 UTAGS LC Championships | |
| 66 | Martin Decotigny | 41.74 | 10 | A Min | AA: 41.09 (+0.65s | 1.6%) | Alto Swim Club | 07/11/2025 | 2025 Age Group Championships | |
| 67 | Luke Ford | 41.75 | 9 | A Min | AA: 41.09 (+0.66s | 1.6%) | The Claremont Club | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 68 | Liam Kwok | 41.85 | 10 | A Min | AA: 41.09 (+0.76s | 1.8%) | Socal Aquatics Association | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 69 | Evan Saltsman | 41.99 | 10 | A Min | AA: 41.09 (+0.90s | 2.1%) | Alpha Aquatics | 06/13/2024 | 2024 CA SCS CANY June Age Group Invite | |
| 70 | Mason Nguyen | 42.00 | 10 | A Min | AA: 41.09 (+0.91s | 2.2%) | Aquazot Swim Club | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 71 | Jayden Cheng | 42.09 | 10 | A Min | AA: 41.09 (+1.00s | 2.4%) | Brea Aquatics | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 72 | Tucker McCullough | 42.14 | 10 | A Min | AA: 41.09 (+1.05s | 2.5%) | Team Rebel Aquatics | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 73 | Jack Yu | 42.14 | 10 | A Min | AA: 41.09 (+1.05s | 2.5%) | Brea Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 74 | Chukwuma Chiedozi | 42.14 | 10 | A Min | AA: 41.09 (+1.05s | 2.5%) | Rogue Rapids | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 75 | William Wang | 42.26 | 10 | A Min | AA: 41.09 (+1.17s | 2.8%) | Pacific Dragons Swim Team | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 76 | Lucas Santos | 42.26 | 10 | A Min | AA: 41.09 (+1.17s | 2.8%) | Golden West Swim Club | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 77 | Ozzy Su | 42.30 | 10 | A Min | AA: 41.09 (+1.21s | 2.9%) | Quicksilver Swimming | 07/11/2025 | 2025 Age Group Championships | |
| 78 | Dash LeGrand | 42.41 | 10 | A Min | AA: 41.09 (+1.32s | 3.1%) | Gold\\\\\\'s Aquatics Club (Camas) | 11/01/2025 | Oregon City Fall Open 2025 | |
| 79 | Lucas Guo | 42.44 | 10 | A Min | AA: 41.09 (+1.35s | 3.2%) | Santa Clara Swim Club | 05/30/2025 | SCSC Pacific Swimming Long Course Intrasquad | |
| 80 | Jerry Ji | 42.49 | 10 | A Min | AA: 41.09 (+1.40s | 3.3%) | Brea Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 81 | Wesley Ho | 42.53 | 10 | A Min | AA: 41.09 (+1.44s | 3.4%) | Aspire Aquatics of Colorado | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 82 | Kian Sotomayor | 42.61 | 10 | A Min | AA: 41.09 (+1.52s | 3.6%) | Rose Bowl Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 83 | Matthew Zhu | 42.65 | 10 | A Min | AA: 41.09 (+1.56s | 3.7%) | Rose Bowl Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 84 | Hongjie Xiao | 42.77 | 8 | A Min | AA: 41.09 (+1.68s | 3.9%) | Irvine Novaquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 85 | Holten Lawrence | 42.78 | 9 | A Min | AA: 41.09 (+1.69s | 4.0%) | The Dalles Swim Team | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 86 | Jarvis Qu | 42.82 | 9 | A Min | AA: 41.09 (+1.73s | 4.0%) | Mission Viejo Nadadores | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 87 | Castle Cline | 42.83 | 10 | A Min | AA: 41.09 (+1.74s | 4.1%) | Seattle Metropolitan Aquatic C | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 88 | Ashton Chen | 42.84 | 10 | A Min | AA: 41.09 (+1.75s | 4.1%) | Brea Aquatics | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 89 | Luke Chai | 42.86 | 9 | A Min | AA: 41.09 (+1.77s | 4.1%) | Unattached | 06/27/2025 | Silicon Valley LC CBA+ Meet | |
| 90 | Wyatt Larson | 42.91 | 10 | A Min | AA: 41.09 (+1.82s | 4.2%) | Denver Swim Academy | 06/06/2025 | 2025 CO NJ Summer Solstice Invitational | |
| 91 | Zachary Bixler | 42.93 | 10 | A Min | AA: 41.09 (+1.84s | 4.3%) | Inland Coastal Aquatic Club | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 92 | Jacob Liu | 42.98 | 10 | A Min | AA: 41.09 (+1.89s | 4.4%) | Aquazot Swim Club | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 93 | Jaezyn Magnaye | 42.98 | 10 | A Min | AA: 41.09 (+1.89s | 4.4%) | Tualatin Hills Swim Club | 08/06/2025 | 2025 Summer Elite Showcase | |
| 94 | Jasper de Szoeke | 42.99 | 10 | A Min | AA: 41.09 (+1.90s | 4.4%) | Corvallis Aquatic Team | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 95 | Peter Surbeck | 43.01 | 10 | A Min | AA: 41.09 (+1.92s | 4.5%) | Unattached | 08/06/2025 | 2025 Western Zone Age Group Championships | |
| 96 | Nikoloz Zhorzholiani | 43.01 | 9 | A Min | AA: 41.09 (+1.92s | 4.5%) | Seattle Metropolitan Aquatic C | 05/31/2025 | 2025 PN VAST Summer Sprints And Distance Chal | |
| 97 | Pace Bui | 43.03 | 10 | A Min | AA: 41.09 (+1.94s | 4.5%) | Sfrp Rossi Swim Team | 06/06/2025 | BAC C B A Meet | |
| 98 | Alexander Mekjian | 43.03 | 10 | A Min | AA: 41.09 (+1.94s | 4.5%) | North Coast Aquatics | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 99 | Oliver Gist-Pitts | 43.14 | 10 | BB Min | A: 43.09 (+0.05s | 0.1%) | Boulder Swim Team | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 100 | Koku Saddawi-Banno | 43.32 | 9 | BB Min | A: 43.09 (+0.23s | 0.5%) | Jbarracudas Swim Team | 07/11/2025 | 2025 SI JBST All Ages NTS Meet | |
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.