Western Zone Zone Boys 10 & under - 50 Y 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 | Jefferson Chiang | 39.52 | 10 | AA Min | AAA: 38.29 (+1.23s | 3.1%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 52 | Emmett Curry | 39.54 | 10 | AA Min | AAA: 38.29 (+1.25s | 3.2%) | Seattle Metropolitan Aquatic C | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 53 | Misha Bolton | 39.59 | 10 | AA Min | AAA: 38.29 (+1.30s | 3.3%) | Royal Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 54 | Aden Sun | 39.61 | 10 | AA Min | AAA: 38.29 (+1.32s | 3.3%) | Burlingame Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 55 | Collin James | 39.62 | 10 | AA Min | AAA: 38.29 (+1.33s | 3.4%) | West Linn | 02/13/2026 | 2026 OR HS 6A 5 | |
| 56 | Peter Petkov | 39.63 | 10 | AA Min | AAA: 38.29 (+1.34s | 3.4%) | Triton Aquatics Club | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 57 | Henry Goddard | 39.63 | 10 | AA Min | AAA: 38.29 (+1.34s | 3.4%) | Lake Oswego Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 58 | Ethan Wang | 39.76 | 9 | AA Min | AAA: 38.29 (+1.47s | 3.7%) | Alto Swim Club | 03/28/2026 | Alto Rock The Blocks Invitational 2026 | |
| 59 | Calvin Larkin | 39.81 | 9 | AA Min | AAA: 38.29 (+1.52s | 3.8%) | Bend Swim Club | 08/07/2026 | Bend Swim Club August Invitational | |
| 60 | Liam Reyes | 39.95 | 10 | AA Min | AAA: 38.29 (+1.66s | 4.2%) | Reno Aquatic Club | 07/31/2026 | 2026 High Country Short Course Championship | |
| 61 | Jensen Huang | 39.95 | 10 | AA Min | AAA: 38.29 (+1.66s | 4.2%) | Arcadia Riptides Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 62 | Nhat Tran | 39.99 | 10 | AA Min | AAA: 38.29 (+1.70s | 4.3%) | Olympic Cascade Aquatics | 02/27/2026 | 2026 PN February AGI, Div 3 Approved | |
| 63 | Jonathan Li | 40.06 | 8 | AA Min | AAA: 38.29 (+1.77s | 4.4%) | Brea Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 64 | Kyle Tang | 40.08 | 9 | AA Min | AAA: 38.29 (+1.79s | 4.5%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 65 | Jack Armbruster | 40.13 | 10 | AA Min | AAA: 38.29 (+1.84s | 4.6%) | San Clemente Aquatic Team | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 66 | Hugo Linowski | 40.17 | 10 | AA Min | AAA: 38.29 (+1.88s | 4.7%) | Olympic Cascade Aquatics | 02/27/2026 | 2026 PN Feb Age Group Invite,Div 3 Approved | |
| 67 | Daniel Heilman | 40.17 | 10 | AA Min | AAA: 38.29 (+1.88s | 4.7%) | San Francisco Seals Swim Team | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | |
| 68 | Gabriel Zhang | 40.19 | 10 | AA Min | AAA: 38.29 (+1.90s | 4.7%) | Pacific Dragons Swim Team | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 69 | Luke Xu | 40.21 | 10 | A Min | AA: 40.19 (+0.02s | 0.0%) | California Dolphins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 70 | Ahaan Iragavarapu | 40.23 | 10 | A Min | AA: 40.19 (+0.04s | 0.1%) | Pro Swimming | 12/12/2025 | 2025 PN 14 Under Short Course Champs Approved | |
| 71 | Jason Yin | 40.24 | 9 | A Min | AA: 40.19 (+0.05s | 0.1%) | Quicksilver Swimming | 03/20/2026 | SCY Spring Age Group Championships | |
| 72 | Cayden Lin | 40.27 | 10 | A Min | AA: 40.19 (+0.08s | 0.2%) | Rosemead Rapids | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 73 | Everett Muzzarelli | 40.33 | 8 | A Min | AA: 40.19 (+0.14s | 0.3%) | Woodbridge Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 74 | Ashwin Tiwari | 40.33 | 9 | A Min | AA: 40.19 (+0.14s | 0.3%) | Olympic Cascade Aquatics | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 75 | Benjamin Shen | 40.36 | 10 | A Min | AA: 40.19 (+0.17s | 0.4%) | Orinda Aquatics | 12/12/2025 | Winter SC Age Group Championships | |
| 76 | Arick Yuan | 40.45 | 10 | A Min | AA: 40.19 (+0.26s | 0.6%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 77 | Oliver Panofsky | 40.54 | 9 | A Min | AA: 40.19 (+0.35s | 0.9%) | Slo Swim Club Seahawks | 12/19/2025 | 2025 SI Winter Age Group Championships | |
| 78 | Matthew Ko | 40.54 | 10 | A Min | AA: 40.19 (+0.35s | 0.9%) | Aspire Aquatics of Colorado | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 79 | Kai Thomas | 40.54 | 10 | A Min | AA: 40.19 (+0.35s | 0.9%) | Renegade Aquatics | 07/10/2026 | 2026 SI JBST All Ages Last Chance Meet | |
| 80 | Axton Santiago | 40.60 | 10 | A Min | AA: 40.19 (+0.41s | 1.0%) | Pearl City Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 81 | Lucas Jiang | 40.70 | 9 | A Min | AA: 40.19 (+0.51s | 1.3%) | Santa Clara Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 82 | Yuning Huang | 40.73 | 10 | A Min | AA: 40.19 (+0.54s | 1.3%) | Rose Bowl Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 83 | Owen Newton | 40.73 | 10 | A Min | AA: 40.19 (+0.54s | 1.3%) | SwimNation Aquatics Programs | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 84 | Ian Susanto | 40.76 | 9 | A Min | AA: 40.19 (+0.57s | 1.4%) | Legacy Aquatics | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 85 | Jeremy Zhao | 40.84 | 9 | A Min | AA: 40.19 (+0.65s | 1.6%) | Quicksilver Swimming | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 86 | Eliott Jackson | 40.92 | 10 | A Min | AA: 40.19 (+0.73s | 1.8%) | Team Eugene Aquatics | 03/14/2026 | 2026 TEAM Shootout | |
| 87 | Asher Young | 40.93 | 10 | A Min | AA: 40.19 (+0.74s | 1.8%) | Terrapins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 88 | Taeyul Heo | 40.97 | 10 | A Min | AA: 40.19 (+0.78s | 1.9%) | Pleasanton Seahawks | 07/25/2026 | Zone 2 Summer Championships | |
| 89 | Flynn Chen | 41.03 | 10 | A Min | AA: 40.19 (+0.84s | 2.0%) | DeAnza Cupertino Aquatics | 02/07/2026 | PASA CBA+ SCY Meet Feb 2026 | |
| 90 | Elijah Hutagalung | 41.08 | 10 | A Min | AA: 40.19 (+0.89s | 2.2%) | Aspire Aquatics of Colorado | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 91 | David Goldenberg | 41.08 | 10 | A Min | AA: 40.19 (+0.89s | 2.2%) | Bellevue Club Swim Team | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 92 | Jaxon Despain | 41.11 | 9 | A Min | AA: 40.19 (+0.92s | 2.2%) | Denver Swim Academy | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 93 | Hongjie Xiao | 41.19 | 9 | A Min | AA: 40.19 (+1.00s | 2.4%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 94 | Phinnaeus Johnson | 41.21 | 10 | A Min | AA: 40.19 (+1.02s | 2.5%) | South Valley Makos | 07/24/2026 | CVAL 2026 | |
| 95 | Aiden Kiatrungrit | 41.24 | 10 | A Min | AA: 40.19 (+1.05s | 2.5%) | South San Francisco Aquatics | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 96 | Jackson Lee | 41.24 | 10 | A Min | AA: 40.19 (+1.05s | 2.5%) | Burlingame Aquatics | 10/25/2025 | TYR BAC SPOOKY FALL CLASSIC | |
| 97 | Matvey Fadeev | 41.25 | 10 | A Min | AA: 40.19 (+1.06s | 2.6%) | Issaquah Swim Team | 11/15/2025 | 2025 PN IST November Invitational | |
| 98 | Bennett Arguello | 41.29 | 9 | A Min | AA: 40.19 (+1.10s | 2.7%) | Greenwood Tiger Sharks | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 99 | Thomas Halford | 41.31 | 10 | A Min | AA: 40.19 (+1.12s | 2.7%) | Pikes Peak Athletics | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 100 | Anthony Ma | 41.43 | 10 | A Min | AA: 40.19 (+1.24s | 3.0%) | Cottonwood Heights Aquatics | 12/13/2025 | 2025 UTAH Winter Classic | |
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.