Southern California Swimming Boys 10 & under - 50 Y Breast
These rankings show the swimmers' placement within their Local Swimming Committee (LSC).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 | Leland Tsou | 42.53 | 9 | BB Min | A: 42.09 (+0.44s | 1.0%) | Paseo Aquatics Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 52 | Bryan HU | 42.54 | 9 | BB Min | A: 42.09 (+0.45s | 1.1%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 53 | Ari Mobasseri | 42.57 | 8 | BB Min | A: 42.09 (+0.48s | 1.1%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 54 | Kaimana Hashimoto | 42.66 | 10 | BB Min | A: 42.09 (+0.57s | 1.3%) | Splash Aquatics | 04/18/2026 | 44th Annual Harry Mamizuka Invitational | |
| 55 | Emilio Balcazar | 42.80 | 10 | BB Min | A: 42.09 (+0.71s | 1.7%) | Centro Acuatico Universitario | 12/19/2025 | 2025 BD Leo Cancellare Memorial Swim Meet | |
| 56 | Mason Nguyen | 42.84 | 10 | BB Min | A: 42.09 (+0.75s | 1.8%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 57 | Yupeng Wang | 42.89 | 10 | BB Min | A: 42.09 (+0.80s | 1.9%) | Monterey Park Manta Rays | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 58 | Graham Terzer | 42.92 | 9 | BB Min | A: 42.09 (+0.83s | 1.9%) | The Spartans of La Canada | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 59 | Preston Tran | 43.03 | 10 | BB Min | A: 42.09 (+0.94s | 2.2%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 60 | Ashton Chen | 43.03 | 10 | BB Min | A: 42.09 (+0.94s | 2.2%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 61 | Brian Chou | 43.13 | 9 | BB Min | A: 42.09 (+1.04s | 2.4%) | Irvine Novaquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 62 | Maochen Tan | 43.17 | 10 | BB Min | A: 42.09 (+1.08s | 2.5%) | Mission Viejo Nadadores | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 63 | Owen Nguyen | 43.37 | 9 | BB Min | A: 42.09 (+1.28s | 3.0%) | Mission Viejo Nadadores | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 64 | Aaron Kim | 43.40 | 9 | BB Min | A: 42.09 (+1.31s | 3.0%) | The Spartans of La Canada | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 65 | Kevin Zhou | 43.51 | 10 | BB Min | A: 42.09 (+1.42s | 3.3%) | Speed Aquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 66 | Keon Cheng | 43.67 | 10 | BB Min | A: 42.09 (+1.58s | 3.6%) | Arcadia Riptides Swim Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 67 | Jerry Ji | 43.67 | 10 | BB Min | A: 42.09 (+1.58s | 3.6%) | Brea Aquatics | 12/13/2024 | 2024 CA RAA SCS WAG | |
| 68 | Maximus Sosa | 43.68 | 10 | BB Min | A: 42.09 (+1.59s | 3.6%) | Dare Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 69 | Anderson Shi | 43.69 | 8 | BB Min | A: 42.09 (+1.60s | 3.7%) | Los Angeles Swim Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 70 | Tucker McCullough | 43.73 | 10 | BB Min | A: 42.09 (+1.64s | 3.8%) | Team Rebel Aquatics | 12/13/2024 | 2024 CA RAA SCS WAG | |
| 71 | Enzo Lin | 43.74 | 10 | BB Min | A: 42.09 (+1.65s | 3.8%) | Splash Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 72 | Branimir Petkov | 43.87 | 9 | BB Min | A: 42.09 (+1.78s | 4.1%) | Evolution Racing Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 73 | Aiden Chung | 44.08 | 10 | BB Min | A: 42.09 (+1.99s | 4.5%) | Patriot Swim Club | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 74 | Lincoln Miyake | 44.23 | 10 | BB Min | A: 42.09 (+2.14s | 4.8%) | Canyons Aquatic Club | 12/06/2025 | 2025 CA CANY Candy Cane | |
| 75 | Michael Cheng | 44.46 | 9 | BB Min | A: 42.09 (+2.37s | 5.3%) | Brea Aquatics | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 76 | ZhenLin Zhu | 44.59 | 9 | BB Min | A: 42.09 (+2.50s | 5.6%) | Seal Beach Swim Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 77 | Marcus Lin | 44.61 | 9 | BB Min | A: 42.09 (+2.52s | 5.6%) | Aquazot Swim Club | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 78 | Mahkoah Tanap | 44.71 | 10 | BB Min | A: 42.09 (+2.62s | 5.9%) | Quantum Waves Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 79 | Jimmy Chen | 45.25 | 9 | BB Min | A: 42.09 (+3.16s | 7.0%) | Monterey Park Manta Rays | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 80 | Mike Semenov | 45.31 | 10 | BB Min | A: 42.09 (+3.22s | 7.1%) | Beach Cities Alpha | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 81 | Moses Xia | 45.33 | 9 | BB Min | A: 42.09 (+3.24s | 7.1%) | Wasc | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 82 | Maksim Kashkolda | 45.55 | 10 | BB Min | A: 42.09 (+3.46s | 7.6%) | Horizon Swimming | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 83 | Jed El Abed | 45.61 | 9 | BB Min | A: 42.09 (+3.52s | 7.7%) | H2o Swim Team | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 84 | Kellan Naisbitt | 45.89 | 10 | BB Min | A: 42.09 (+3.80s | 8.3%) | Mission Viejo Nadadores | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 85 | Callahan Espiritu | 45.93 | 8 | BB Min | A: 42.09 (+3.84s | 8.4%) | Aquazot Swim Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 86 | Aram Hovsepian | 46.06 | 10 | BB Min | A: 42.09 (+3.97s | 8.6%) | Canyons Aquatic Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 87 | Daniel Chang | 46.16 | 8 | BB Min | A: 42.09 (+4.07s | 8.8%) | Brea Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 88 | Dongxin Xian | 46.22 | 10 | BB Min | A: 42.09 (+4.13s | 8.9%) | Arcadia Riptides Swim Club | 03/13/2025 | 2025 SCS Spring Age Group Champs @ Armada | |
| 89 | Wyatt Chandler | 46.29 | 10 | BB Min | A: 42.09 (+4.20s | 9.1%) | San Dimas Aquatics | 12/13/2024 | 2024 CA RAA SCS WAG | |
| 90 | Edgar Harutyunyan | 46.38 | 10 | BB Min | A: 42.09 (+4.29s | 9.2%) | Rose Bowl Aquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 91 | Erik Hai | 46.48 | 10 | BB Min | A: 42.09 (+4.39s | 9.4%) | The Claremont Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 92 | Octavio Bejarano Barraza | 46.54 | 10 | BB Min | A: 42.09 (+4.45s | 9.6%) | Centro Acuatico Universitario | 12/19/2025 | 2025 BD Leo Cancellare Memorial Swim Meet | |
| 93 | Kai Vo | 46.68 | 9 | BB Min | A: 42.09 (+4.59s | 9.8%) | Splash Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 94 | Grayson Li | 46.77 | 9 | BB Min | A: 42.09 (+4.68s | 10.0%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 95 | Levi Garay | 46.97 | 10 | BB Min | A: 42.09 (+4.88s | 10.4%) | Fontana Aquatics Club | 12/04/2025 | 2025 Holiday Swim Festival | |
| 96 | Ezio Ubaldi | 47.01 | 9 | BB Min | A: 42.09 (+4.92s | 10.5%) | Beach Cities Alpha | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 97 | Graham Brinker | 47.07 | 9 | BB Min | A: 42.09 (+4.98s | 10.6%) | Star Aquatics | 10/03/2025 | 2025 STAR September Friday Night At The Races | |
| 98 | Bryce Alpert | 47.65 | 9 | BB Min | A: 42.09 (+5.56s | 11.7%) | Aquazot Swim Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 99 | Declan Wang | 47.80 | 10 | B Min | BB: 47.69 (+0.11s | 0.2%) | Fast Swim Team | 02/16/2024 | 2024 CCS SCY AGC | |
| 100 | Ryan Song | 47.82 | 8 | B Min | BB: 47.69 (+0.13s | 0.3%) | Wasc | 11/21/2025 | 2025 CA MVN Turkey 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.