Western Zone Zone Boys 10 & under - 50 Y 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 | Johann Mancenido | 33.24 | 10 | AAA Min | AAAA: 32.19 (+1.05s | 3.2%) | Dart Swimming | 11/09/2024 | Folsom Classic 2024 | |
| 52 | Aurelius Lien | 33.31 | 9 | AAA Min | AAAA: 32.19 (+1.12s | 3.4%) | Santa Clara Swim Club | 12/12/2025 | Winter SC Age Group Championships | |
| 53 | Aaron Niu | 33.45 | 9 | AAA Min | AAAA: 32.19 (+1.26s | 3.8%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 54 | Matthew Zhao | 33.49 | 10 | AAA Min | AAAA: 32.19 (+1.30s | 3.9%) | Brea Aquatics | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 55 | Lucas Stocker | 33.50 | 10 | AAA Min | AAAA: 32.19 (+1.31s | 3.9%) | Coastal Machine Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 56 | Matvey Fadeev | 33.52 | 10 | AAA Min | AAAA: 32.19 (+1.33s | 4.0%) | Issaquah Swim Team | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 57 | Shunsuke Suzuki | 33.57 | 10 | AAA Min | AAAA: 32.19 (+1.38s | 4.1%) | Palo Alto Stanford Aquatics | 03/20/2026 | SCY Spring Age Group Championships | |
| 58 | Maxwell Dean | 33.66 | 10 | AAA Min | AAAA: 32.19 (+1.47s | 4.4%) | Voltage Aquatics | 12/13/2025 | 2025 Holiday Classic | |
| 59 | Aiden Chung | 33.66 | 10 | AAA Min | AAAA: 32.19 (+1.47s | 4.4%) | Patriot Swim Club | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 60 | Preston Tran | 33.70 | 10 | AAA Min | AAAA: 32.19 (+1.51s | 4.5%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 61 | Ryan Peng | 33.80 | 10 | AAA Min | AAAA: 32.19 (+1.61s | 4.8%) | Roseburg Y Swim Team | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 62 | Mason Friesen | 33.87 | 10 | AAA Min | AAAA: 32.19 (+1.68s | 5.0%) | Lynden | 02/14/2025 | 2025 Northwest District 1 2A Boys HS Distri | |
| 63 | Mason Nguyen | 33.88 | 10 | AAA Min | AAAA: 32.19 (+1.69s | 5.0%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 64 | Wyatt Larson | 33.94 | 10 | AAA Min | AAAA: 32.19 (+1.75s | 5.2%) | Denver Swim Academy | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 65 | Carlos Montenegro | 33.99 | 9 | AAA Min | AAAA: 32.19 (+1.80s | 5.3%) | Kentridge | 01/10/2026 | 2026 Kentridge High School Invitational Obse | |
| 66 | Holten Lawrence | 34.06 | 9 | AA Min | AAA: 33.99 (+0.07s | 0.2%) | The Dalles Swim Team | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 67 | Isaac Dai | 34.06 | 9 | AA Min | AAA: 33.99 (+0.07s | 0.2%) | Mission Viejo Nadadores | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 68 | Pace Bui | 34.07 | 10 | AA Min | AAA: 33.99 (+0.08s | 0.2%) | Fog City Hammerheads | 03/20/2026 | SCY Spring Age Group Championships | |
| 69 | Samuel Fuller | 34.08 | 10 | AA Min | AAA: 33.99 (+0.09s | 0.3%) | Rose Bowl Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 70 | Andrew Lin | 34.10 | 10 | AA Min | AAA: 33.99 (+0.11s | 0.3%) | Bellevue Club Swim Team | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 71 | Adrian Tu | 34.10 | 10 | AA Min | AAA: 33.99 (+0.11s | 0.3%) | Walnut Creek Aquabears | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 72 | Elliott Ganancial | 34.12 | 10 | AA Min | AAA: 33.99 (+0.13s | 0.4%) | Aloha Aquatics Association | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 73 | Aiden Liew | 34.18 | 10 | AA Min | AAA: 33.99 (+0.19s | 0.6%) | Excel Aquatics | 03/19/2026 | 2026 NC TAC ESSZ Age Group Sectionals | |
| 74 | Nicholas Liu | 34.20 | 9 | AA Min | AAA: 33.99 (+0.21s | 0.6%) | Alto Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 75 | August Liao | 34.26 | 10 | AA Min | AAA: 33.99 (+0.27s | 0.8%) | Paris-Black | 01/24/2026 | 2026 SCS Swim Festival | |
| 76 | Martin Decotigny | 34.29 | 10 | AA Min | AAA: 33.99 (+0.30s | 0.9%) | Alto Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 77 | Eliott Jackson | 34.34 | 10 | AA Min | AAA: 33.99 (+0.35s | 1.0%) | Team Eugene Aquatics | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 78 | Ethan Canlas | 34.35 | 10 | AA Min | AAA: 33.99 (+0.36s | 1.0%) | Sandpipers of Nevada | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 79 | Jason Feng | 34.38 | 10 | AA Min | AAA: 33.99 (+0.39s | 1.1%) | Boys & Girls Club of SF | 12/12/2025 | Winter SC Age Group Championships | |
| 80 | Asher Mormino | 34.38 | 9 | AA Min | AAA: 33.99 (+0.39s | 1.1%) | Bend Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 81 | Abner Acevedo Trujillo | 34.39 | 10 | AA Min | AAA: 33.99 (+0.40s | 1.2%) | David Douglas | 02/13/2026 | 2026 OR HS 6A 4 | |
| 82 | Sebastian Saade | 34.42 | 10 | AA Min | AAA: 33.99 (+0.43s | 1.2%) | Los Angeles Swim Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 83 | Declan Benton | 34.43 | 10 | AA Min | AAA: 33.99 (+0.44s | 1.3%) | Sawtooth Aquatic Club | 12/04/2025 | 2025 Holiday Swim Festival | |
| 84 | Marcus Lin | 34.43 | 8 | AA Min | AAA: 33.99 (+0.44s | 1.3%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 85 | William Trueman | 34.43 | 10 | AA Min | AAA: 33.99 (+0.44s | 1.3%) | CAC Stingrays Swim Team | 03/06/2026 | 2026 CO 14 U Silver State | |
| 86 | Russell Choy | 34.52 | 10 | AA Min | AAA: 33.99 (+0.53s | 1.5%) | Aquazot Swim Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 87 | Tyler Fons | 34.59 | 10 | AA Min | AAA: 33.99 (+0.60s | 1.7%) | North Jeffco Swim Team | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 88 | Kevin Gharib | 34.61 | 10 | AA Min | AAA: 33.99 (+0.62s | 1.8%) | Team Swim Los Angeles | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 89 | Ian Kato | 34.62 | 10 | AA Min | AAA: 33.99 (+0.63s | 1.8%) | Sandy High School Swim Team | 02/15/2025 | 2025 OR HS 6a 4 | |
| 90 | Jack Armbruster | 34.65 | 10 | AA Min | AAA: 33.99 (+0.66s | 1.9%) | San Clemente Aquatic Team | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 91 | Lucas Pan | 34.68 | 9 | AA Min | AAA: 33.99 (+0.69s | 2.0%) | Santa Clara Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 92 | Jaxon Mondragon | 34.69 | 10 | AA Min | AAA: 33.99 (+0.70s | 2.0%) | Aquawolves Swimming | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 93 | Ethan Qu | 34.75 | 10 | AA Min | AAA: 33.99 (+0.76s | 2.2%) | Santa Clara Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 94 | Shawn Wu | 34.79 | 10 | AA Min | AAA: 33.99 (+0.80s | 2.3%) | Brea Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 95 | Aleksandr Rybin | 34.81 | 10 | AA Min | AAA: 33.99 (+0.82s | 2.4%) | King Aquatic Club | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 96 | Luke Chai | 34.81 | 9 | AA Min | AAA: 33.99 (+0.82s | 2.4%) | Pleasanton Seahawks | 03/20/2026 | SCY Spring Age Group Championships | |
| 97 | Jonathan Nelson | 34.82 | 10 | AA Min | AAA: 33.99 (+0.83s | 2.4%) | Utah Valley Aquatics | 10/23/2025 | 2025 Mike Harper Open | |
| 98 | Archer Bridges | 34.84 | 10 | AA Min | AAA: 33.99 (+0.85s | 2.4%) | Tigard | 02/13/2026 | 2026 OR HS 6A 5 | |
| 99 | Benjamin Shen | 34.87 | 10 | AA Min | AAA: 33.99 (+0.88s | 2.5%) | Orinda Aquatics | 12/12/2025 | Winter SC Age Group Championships | |
| 100 | Hongjie Xiao | 34.87 | 8 | AA Min | AAA: 33.99 (+0.88s | 2.5%) | Irvine Novaquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
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.