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 | Jozua Sugianto | 38.29 | 10 | AAA Min | AAAA: 36.39 (+1.90s | 5.0%) | California Dolphins Swim Team | 12/12/2025 | Winter SC Age Group Championships | |
| 52 | Ryan Latronica | 38.35 | 10 | AA Min | AAA: 38.29 (+0.06s | 0.2%) | Hills Hurricane Swimming | 02/28/2026 | VJO Rep The Bay C B A+ 2026 Copied | |
| 53 | Kevin Zou | 38.50 | 9 | AA Min | AAA: 38.29 (+0.21s | 0.5%) | Alto Swim Club | 04/03/2025 | Pacific Swimming SC Far Western Champs | |
| 54 | Logan Liew | 38.51 | 9 | AA Min | AAA: 38.29 (+0.22s | 0.6%) | Streamliner Aquatics | 12/04/2025 | 2025 Holiday Swim Festival | |
| 55 | Shawn Wu | 38.53 | 10 | AA Min | AAA: 38.29 (+0.24s | 0.6%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 56 | Max Lin | 38.54 | 9 | AA Min | AAA: 38.29 (+0.25s | 0.6%) | Irvine Novaquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 57 | Krish Samanta | 38.66 | 10 | AA Min | AAA: 38.29 (+0.37s | 1.0%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 58 | Cameron Boitano | 38.71 | 9 | AA Min | AAA: 38.29 (+0.42s | 1.1%) | Pleasanton Seahawks | 12/12/2025 | Winter SC Age Group Championships | |
| 59 | HanJun Zhang | 38.81 | 10 | AA Min | AAA: 38.29 (+0.52s | 1.3%) | Wasc | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 60 | Demian Jarmy | 38.81 | 10 | AA Min | AAA: 38.29 (+0.52s | 1.3%) | Pleasanton Seahawks | 11/08/2025 | Albany Armada Aquatics C B BB+ Meet | |
| 61 | Lucas Guo | 38.83 | 10 | AA Min | AAA: 38.29 (+0.54s | 1.4%) | Santa Clara Swim Club | 11/08/2025 | Folsom Classic 2025 | |
| 62 | David Grant | 38.88 | 10 | AA Min | AAA: 38.29 (+0.59s | 1.5%) | Fort Collins Area Swim Team | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 63 | Lathan Su | 38.89 | 10 | AA Min | AAA: 38.29 (+0.60s | 1.5%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 64 | Allen Chen | 38.91 | 10 | AA Min | AAA: 38.29 (+0.62s | 1.6%) | Seattle Metropolitan Aquatic C | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
| 65 | Daniel Zhao | 38.97 | 10 | AA Min | AAA: 38.29 (+0.68s | 1.7%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 66 | Justus Waqainabete | 38.97 | 10 | AA Min | AAA: 38.29 (+0.68s | 1.7%) | Aulea Swim Club | 10/25/2025 | 2025 HI 25th Annual Bill Smith Invitational | |
| 67 | Tyler Zhang | 39.03 | 10 | AA Min | AAA: 38.29 (+0.74s | 1.9%) | Pacific Dragons Swim Team | 02/07/2026 | 2026 PN IST Feb Winter Invitational Approved | |
| 68 | Maxwell Dean | 39.04 | 10 | AA Min | AAA: 38.29 (+0.75s | 1.9%) | Voltage Aquatics | 12/13/2025 | 2025 Holiday Classic | |
| 69 | Martin Decotigny | 39.04 | 10 | AA Min | AAA: 38.29 (+0.75s | 1.9%) | Alto Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 70 | Emmanuel Steele | 39.06 | 10 | AA Min | AAA: 38.29 (+0.77s | 2.0%) | Vision Swim | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 71 | Kota Whitman | 39.08 | 10 | AA Min | AAA: 38.29 (+0.79s | 2.0%) | North Bay Aquatics | 02/13/2026 | 34th Annual Lost Dutchman Invitational | |
| 72 | Samuel Fuller | 39.09 | 10 | AA Min | AAA: 38.29 (+0.80s | 2.0%) | Los Angeles-Blue | 01/24/2026 | 2026 SCS Swim Festival | |
| 73 | Isaac Toledo | 39.09 | 10 | AA Min | AAA: 38.29 (+0.80s | 2.0%) | Fusion Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 74 | Luca Aguilera | 39.12 | 10 | AA Min | AAA: 38.29 (+0.83s | 2.1%) | Roadrunner Aquatics | 12/04/2025 | 2025 Holiday Swim Festival | |
| 75 | Jay Andresen | 39.12 | 10 | AA Min | AAA: 38.29 (+0.83s | 2.1%) | Lakeridge Swim Team | 10/17/2025 | 2025 KING OF THE HILL CHALLENGE | |
| 76 | Alexander Kovnatsky | 39.23 | 10 | AA Min | AAA: 38.29 (+0.94s | 2.4%) | Orinda Aquatics | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 77 | Miro Wang | 39.27 | 10 | AA Min | AAA: 38.29 (+0.98s | 2.5%) | Santa Clara Swim Club | 02/28/2026 | Swim South Bay | |
| 78 | Chukwuma Chiedozi | 39.29 | 10 | AA Min | AAA: 38.29 (+1.00s | 2.5%) | Rogue Rapids | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 79 | Jia Wei | 39.33 | 10 | AA Min | AAA: 38.29 (+1.04s | 2.6%) | Alto Swim Club | 04/03/2025 | Pacific Swimming SC Far Western Champs | |
| 80 | Owen Tan | 39.33 | 9 | AA Min | AAA: 38.29 (+1.04s | 2.6%) | Hawaii Swimming Club | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 81 | Kai Jo | 39.38 | 10 | AA Min | AAA: 38.29 (+1.09s | 2.8%) | Punahou Aquatics Institute | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 82 | Theodore Zawada | 39.39 | 11 | AA Min | AAA: 38.29 (+1.10s | 2.8%) | Legacy Aquatics | 01/09/2026 | 2026 NE NSSC January 9 11 BC Meet | |
| 83 | Ethan Canlas | 39.40 | 10 | AA Min | AAA: 38.29 (+1.11s | 2.8%) | Rio-Green | 01/24/2026 | 2026 SCS Swim Festival | |
| 84 | Brett Baker | 39.44 | 10 | AA Min | AAA: 38.29 (+1.15s | 2.9%) | Burlingame Aquatics | 03/07/2026 | BAC Race To AGCs | |
| 85 | Allister Georgiou | 39.46 | 10 | AA Min | AAA: 38.29 (+1.17s | 3.0%) | McGrath Marlins Swim Team | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 86 | Dylan sun | 39.47 | 10 | AA Min | AAA: 38.29 (+1.18s | 3.0%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 87 | Emmett Chen | 39.47 | 10 | AA Min | AAA: 38.29 (+1.18s | 3.0%) | San Ramon Valley Aquatics | 01/31/2026 | Zone 2 Winter Championship Meet | |
| 88 | Spencer Slowik | 39.51 | 10 | AA Min | AAA: 38.29 (+1.22s | 3.1%) | Bainbridge Island Swim Club | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 89 | Harvey Zhang | 39.51 | 10 | AA Min | AAA: 38.29 (+1.22s | 3.1%) | Wave Aquatics | 11/22/2025 | 2025 PN Nov AGI, Division 2 (SMAC) | |
| 90 | Jefferson Chiang | 39.52 | 9 | AA Min | AAA: 38.29 (+1.23s | 3.1%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 91 | Aden Sun | 39.61 | 10 | AA Min | AAA: 38.29 (+1.32s | 3.3%) | Burlingame Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 92 | Collin James | 39.62 | 10 | AA Min | AAA: 38.29 (+1.33s | 3.4%) | West Linn | 02/13/2026 | 2026 OR HS 6A 5 | |
| 93 | 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+ | |
| 94 | 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 | |
| 95 | Jayden Liu | 39.67 | 10 | AA Min | AAA: 38.29 (+1.38s | 3.5%) | Seattle Metropolitan Aquatic C | 12/12/2025 | 2025 PN 14 Under Short Course Champs Approved | |
| 96 | Landon Callaway | 39.76 | 10 | AA Min | AAA: 38.29 (+1.47s | 3.7%) | Aces Swim Club | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 97 | Boxuan Yu | 39.77 | 10 | AA Min | AAA: 38.29 (+1.48s | 3.7%) | Pacific Dragons Swim Team | 12/12/2025 | 2025 PN 14 Under Short Course Champs Approved | |
| 98 | Riccardo Sardena | 39.83 | 9 | AA Min | AAA: 38.29 (+1.54s | 3.9%) | Swim Team of Placentia | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 99 | Jacob Liu | 39.87 | 10 | AA Min | AAA: 38.29 (+1.58s | 4.0%) | Aquazot Swim Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 100 | Jason Ye | 39.88 | 10 | AA Min | AAA: 38.29 (+1.59s | 4.0%) | Alto Swim Club | 03/07/2026 | DACA CBA 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.