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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Zhecheng Zhu | 34.40 | 10 | AAAA Min | Irvine Novaquatics | 04/09/2026 | 2026 Far Western SC Hosted By SCSC | ||
| 2 | Max Lin | 37.14 | 10 | AAA Min | AAAA: 36.39 (+0.75s | 2.0%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 3 | Matthew Zhao | 37.55 | 10 | AAA Min | AAAA: 36.39 (+1.16s | 3.1%) | Brea Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 4 | Mason Ryu | 37.83 | 10 | AAA Min | AAAA: 36.39 (+1.44s | 3.8%) | Klg Sports Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 5 | Abraham Cheng | 38.66 | 10 | AA Min | AAA: 38.29 (+0.37s | 1.0%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 6 | Riccardo Sardena | 39.42 | 10 | AA Min | AAA: 38.29 (+1.13s | 2.9%) | Swim Team of Placentia | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 7 | Jefferson Chiang | 39.52 | 10 | AA Min | AAA: 38.29 (+1.23s | 3.1%) | Tokyo-Red | 01/24/2026 | 2026 SCS Swim Festival | |
| 8 | 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 | |
| 9 | 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 | |
| 10 | 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 | |
| 11 | 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 | |
| 12 | 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 | |
| 13 | Kaimana Hashimoto | 40.34 | 10 | A Min | AA: 40.19 (+0.15s | 0.4%) | Splash Aquatics | 10/24/2026 | 2026 HI 26th Annual Bill Smith Invitational | |
| 14 | 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 | |
| 15 | 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 | |
| 16 | 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 | |
| 17 | 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 | |
| 18 | Eric Zeng | 41.46 | 9 | A Min | AA: 40.19 (+1.27s | 3.1%) | Canyons Aquatic Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 19 | Devin Song | 41.53 | 9 | A Min | AA: 40.19 (+1.34s | 3.2%) | Rose Bowl Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 20 | Cameron Day | 41.82 | 10 | A Min | AA: 40.19 (+1.63s | 3.9%) | Mission Viejo Nadadores | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 21 | Eli Lawson | 41.88 | 9 | A Min | AA: 40.19 (+1.69s | 4.0%) | Dolphin Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 22 | Koa Tejwani | 41.92 | 9 | A Min | AA: 40.19 (+1.73s | 4.1%) | Jcc Waves | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 23 | William Yao | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Fontana Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 24 | Mark Kiselev | 42.12 | 9 | BB Min | A: 42.09 (+0.03s | 0.1%) | Royal Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 25 | Yusen Wang | 42.20 | 9 | BB Min | A: 42.09 (+0.11s | 0.3%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 26 | Anderson Bradley | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Coastal Machine Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 27 | Phillippe Choi | 42.27 | 10 | BB Min | A: 42.09 (+0.18s | 0.4%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 28 | Leland Tsou | 42.53 | 10 | BB Min | A: 42.09 (+0.44s | 1.0%) | Paseo Aquatics Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 29 | Bryan HU | 42.54 | 10 | BB Min | A: 42.09 (+0.45s | 1.1%) | Aquazot Swim Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 30 | 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 | |
| 31 | 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 | |
| 32 | 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 | |
| 33 | 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 | |
| 34 | Graham Terzer | 42.92 | 10 | BB Min | A: 42.09 (+0.83s | 1.9%) | The Spartans of La Canada | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 35 | 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 | |
| 36 | Enzo Lin | 43.09 | 10 | BB Min | A: 42.09 (+1.00s | 2.3%) | Splash Aquatics | 09/05/2026 | OSL A+ Sprint Pentathlon Copied | |
| 37 | Brian Chou | 43.13 | 9 | BB Min | A: 42.09 (+1.04s | 2.4%) | Irvine Novaquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 38 | Owen Nguyen | 43.37 | 10 | BB Min | A: 42.09 (+1.28s | 3.0%) | Mission Viejo Nadadores | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 39 | Aaron Kim | 43.40 | 10 | 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 | |
| 40 | 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 | |
| 41 | Jerry Ji | 43.67 | 10 | BB Min | A: 42.09 (+1.58s | 3.6%) | Brea Aquatics | 12/13/2024 | 2024 CA RAA SCS WAG | |
| 42 | Maximus Sosa | 43.68 | 10 | BB Min | A: 42.09 (+1.59s | 3.6%) | Dare Aquatics | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 43 | 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 | |
| 44 | Branimir Petkov | 43.87 | 10 | BB Min | A: 42.09 (+1.78s | 4.1%) | Evolution Racing Club | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 45 | 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 | |
| 46 | 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 | |
| 47 | Michael Cheng | 44.46 | 9 | BB Min | A: 42.09 (+2.37s | 5.3%) | Brea Aquatics | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 48 | 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 | |
| 49 | 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 | |
| 50 | 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 | |
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.