Western Zone Zone Boys 10 & under - 50 M Breast
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 | Ari Mobasseri | 44.04 | 8 | AA Min | AAA: 43.59 (+0.45s | 1.0%) | Aquazot Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 52 | Devin Song | 44.06 | 9 | AA Min | AAA: 43.59 (+0.47s | 1.1%) | Rose Bowl Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 53 | Aaron Kim | 44.06 | 10 | AA Min | AAA: 43.59 (+0.47s | 1.1%) | The Spartans of La Canada | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 54 | Owen Zeng | 44.17 | 10 | AA Min | AAA: 43.59 (+0.58s | 1.3%) | Trident Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 55 | Jonathan Li | 44.18 | 8 | AA Min | AAA: 43.59 (+0.59s | 1.3%) | Brea Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 56 | Matthew Ko | 44.21 | 10 | AA Min | AAA: 43.59 (+0.62s | 1.4%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 57 | Leon Escarcega Hernandez | 44.34 | 10 | AA Min | AAA: 43.59 (+0.75s | 1.7%) | Halcones Marinos Capn | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 58 | Ryan Latronica | 44.40 | 10 | AA Min | AAA: 43.59 (+0.81s | 1.8%) | Hills Hurricane Swimming | 07/31/2025 | 2025 Long Course Far Western Championship | |
| 59 | Max Ong | 44.48 | 10 | AA Min | AAA: 43.59 (+0.89s | 2.0%) | Pacific Swim | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 60 | Wyatt Larson | 44.51 | 10 | AA Min | AAA: 43.59 (+0.92s | 2.1%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 61 | Daniel Heilman | 44.62 | 10 | AA Min | AAA: 43.59 (+1.03s | 2.3%) | San Francisco Seals Swim Team | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 62 | Henry Goddard | 44.70 | 10 | AA Min | AAA: 43.59 (+1.11s | 2.5%) | Lake Oswego Swim Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 63 | Gavin Johnston | 44.74 | 10 | AA Min | AAA: 43.59 (+1.15s | 2.6%) | Manta Ray Aquatics | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 64 | Paxton Marvray | 44.79 | 10 | AA Min | AAA: 43.59 (+1.20s | 2.7%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 65 | Graeme Mulhearn | 44.80 | 6 | AA Min | AAA: 43.59 (+1.21s | 2.7%) | Livermore AquaCowboys | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 66 | Elliott Lindley | 44.90 | 10 | AA Min | AAA: 43.59 (+1.31s | 2.9%) | Los Altos Mountain View Aquati | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 67 | Pace Bui | 44.91 | 10 | AA Min | AAA: 43.59 (+1.32s | 2.9%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 68 | Ethan Qu | 44.91 | 10 | AA Min | AAA: 43.59 (+1.32s | 2.9%) | Santa Clara Swim Club | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 69 | Everett Muzzarelli | 44.95 | 8 | AA Min | AAA: 43.59 (+1.36s | 3.0%) | Woodbridge Swim Team | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 70 | Owen Tan | 45.01 | 9 | AA Min | AAA: 43.59 (+1.42s | 3.2%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 71 | Cayden Lin | 45.02 | 10 | AA Min | AAA: 43.59 (+1.43s | 3.2%) | Rosemead Rapids | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | |
| 72 | Parker Sampson | 45.16 | 10 | AA Min | AAA: 43.59 (+1.57s | 3.5%) | Denver Swim Academy | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 73 | Brian Yu | 45.17 | 10 | AA Min | AAA: 43.59 (+1.58s | 3.5%) | Dare Aquatics | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | |
| 74 | Jeremy Zhao | 45.19 | 9 | AA Min | AAA: 43.59 (+1.60s | 3.5%) | Quicksilver Swimming | 06/11/2026 | 2026 SCS June AG Invite | |
| 75 | Peter Hofman | 45.21 | 10 | AA Min | AAA: 43.59 (+1.62s | 3.6%) | Cascade Swim Club | 06/19/2026 | 2026 IE VS Starlight Open (USAS) | |
| 76 | Jacob Liu | 45.27 | 10 | AA Min | AAA: 43.59 (+1.68s | 3.7%) | Aquazot Swim Club | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 77 | Blaine Maramot | 45.30 | 10 | AA Min | AAA: 43.59 (+1.71s | 3.8%) | Buenaventura Swim Club | 06/11/2026 | 2026 SCS June AG Invite | |
| 78 | Henry Bresson | 45.31 | 10 | AA Min | AAA: 43.59 (+1.72s | 3.8%) | Chinook Aquatic Club | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 79 | Ashwin Tiwari | 45.37 | 9 | AA Min | AAA: 43.59 (+1.78s | 3.9%) | Olympic Cascade Aquatics | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 80 | Mark Kiselev | 45.40 | 9 | AA Min | AAA: 43.59 (+1.81s | 4.0%) | Royal Swim Team | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 81 | Phillippe Choi | 45.54 | 10 | AA Min | AAA: 43.59 (+1.95s | 4.3%) | Blast Sharks | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 82 | Kai Thomas | 45.58 | 10 | AA Min | AAA: 43.59 (+1.99s | 4.4%) | Renegade Aquatics | 05/23/2026 | SI 2026 TAC CSTE All Ages NTS Meet | |
| 83 | Anderson Bradley | 45.60 | 10 | AA Min | AAA: 43.59 (+2.01s | 4.4%) | Coastal Machine Aquatics Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 84 | Ethan Wang | 45.62 | 9 | AA Min | AAA: 43.59 (+2.03s | 4.4%) | Alto Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 85 | Oliver Pearce | 45.68 | 10 | AA Min | AAA: 43.59 (+2.09s | 4.6%) | Aces Swim Club | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 86 | Lucas Jiang | 45.72 | 9 | AA Min | AAA: 43.59 (+2.13s | 4.7%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 87 | Kaimana Hashimoto | 45.74 | 10 | AA Min | AAA: 43.59 (+2.15s | 4.7%) | Splash Aquatics | 07/16/2026 | 2026 HISI LCM Championships | |
| 88 | Maksim Kashkolda | 45.79 | 10 | AA Min | AAA: 43.59 (+2.20s | 4.8%) | Horizon Swimming | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | |
| 89 | Brian Chou | 45.80 | 9 | A Min | AA: 45.79 (+0.01s | 0.0%) | Irvine Novaquatics | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 90 | Jaxon Despain | 45.85 | 9 | A Min | AA: 45.79 (+0.06s | 0.1%) | Denver Swim Academy | 05/16/2026 | 2026 CO Hilltopper Invite | |
| 91 | Yixuan Zhu | 45.85 | 10 | A Min | AA: 45.79 (+0.06s | 0.1%) | Pleasanton Seahawks | 05/23/2026 | 2026 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 92 | Oliver King | 45.86 | 10 | A Min | AA: 45.79 (+0.07s | 0.2%) | Irvine Novaquatics | 06/11/2026 | 2026 SCS June AG Invite | |
| 93 | Tatsumasa Sekine | 45.97 | 9 | A Min | AA: 45.79 (+0.18s | 0.4%) | Santa Clara Swim Club | 06/27/2026 | 2026 Santa Clara LC Race To Age Group Champs | |
| 94 | Yuning Huang | 45.97 | 10 | A Min | AA: 45.79 (+0.18s | 0.4%) | Rose Bowl Aquatics | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 95 | Graham Terzer | 45.99 | 10 | A Min | AA: 45.79 (+0.20s | 0.4%) | The Spartans of La Canada | 07/23/2026 | 2026 CA SCS Summer A G Champs @ BREA | |
| 96 | Hawx Hansen | 46.01 | 10 | A Min | AA: 45.79 (+0.22s | 0.5%) | Utah Zone Team | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 97 | Zakhar Breslavskyi | 46.05 | 10 | A Min | AA: 45.79 (+0.26s | 0.6%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 98 | Leland Tsou | 46.08 | 10 | A Min | AA: 45.79 (+0.29s | 0.6%) | Paseo Aquatics Swim Team | 06/11/2026 | 2026 SCS June AG Invite CANY | |
| 99 | Jake McNair | 46.12 | 9 | A Min | AA: 45.79 (+0.33s | 0.7%) | Bellevue Club Swim Team | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 100 | Danylo Marshchivskyi | 46.13 | 8 | A Min | AA: 45.79 (+0.34s | 0.7%) | Aquazot Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
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.