Pacific Swimming Boys 10 & under - 50 M 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 | Daniel Heilman | 49.25 | 10 | BB Min | A: 47.89 (+1.36s | 2.8%) | San Francisco Seals Swim Team | 05/30/2025 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 52 | Leo Ioffe | 49.63 | 10 | BB Min | A: 47.89 (+1.74s | 3.5%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 53 | Louis Yu | 49.63 | 8 | BB Min | A: 47.89 (+1.74s | 3.5%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 54 | Kai Kitamori | 49.68 | 10 | BB Min | A: 47.89 (+1.79s | 3.6%) | East Bay Bat Rays | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 55 | Ryan Ferguson | 49.72 | 9 | BB Min | A: 47.89 (+1.83s | 3.7%) | Santa Clara Swim Club | 06/27/2026 | 2026 Santa Clara LC Race To Age Group Champs | |
| 56 | Jaden Manalastas | 49.74 | 10 | BB Min | A: 47.89 (+1.85s | 3.7%) | South San Francisco Aquatics | 05/02/2026 | Alto Spring Jam CBA | |
| 57 | Phinnaeus Johnson | 49.75 | 10 | BB Min | A: 47.89 (+1.86s | 3.7%) | South Valley Makos | 06/27/2025 | Valley Splash | |
| 58 | Ilan Rattner | 49.86 | 9 | BB Min | A: 47.89 (+1.97s | 4.0%) | Sunnyvale Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 59 | Caleb Gray | 49.97 | 8 | BB Min | A: 47.89 (+2.08s | 4.2%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 60 | Kotia Zvereff | 50.02 | 8 | BB Min | A: 47.89 (+2.13s | 4.3%) | Unattached | 06/12/2026 | Neptune Swimming June LC Meet | |
| 61 | Adam Alkhayru | 50.09 | 9 | BB Min | A: 47.89 (+2.20s | 4.4%) | Reno Aquatic Club | 07/10/2026 | 2026 NNA Silver State Championships | |
| 62 | William Power | 50.11 | 10 | BB Min | A: 47.89 (+2.22s | 4.4%) | Unattached | 06/27/2025 | Valley Splash | |
| 63 | Ishaan Malik | 50.15 | 10 | BB Min | A: 47.89 (+2.26s | 4.5%) | Unattached | 05/02/2026 | Alto Spring Jam CBA | |
| 64 | Albert Zhao | 50.17 | 9 | BB Min | A: 47.89 (+2.28s | 4.5%) | Palo Alto Stanford Aquatics | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 65 | Daniel Kalinovski | 50.23 | 10 | BB Min | A: 47.89 (+2.34s | 4.7%) | Otter Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | |
| 66 | Bruce Zhang | 50.27 | 9 | BB Min | A: 47.89 (+2.38s | 4.7%) | Alto Swim Club | 06/20/2026 | Alto Summer Swelter | |
| 67 | Adam Ma | 50.38 | 10 | BB Min | A: 47.89 (+2.49s | 4.9%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 68 | Dylan Tian | 50.45 | 8 | BB Min | A: 47.89 (+2.56s | 5.1%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 69 | BaoSheng Wang | 50.50 | 8 | BB Min | A: 47.89 (+2.61s | 5.2%) | San Ramon Valley Aquatics | 05/29/2026 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 70 | Erik Shabdanov | 50.53 | 8 | BB Min | A: 47.89 (+2.64s | 5.2%) | Sunnyvale Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | |
| 71 | Isaiah Fadillah | 50.65 | 10 | BB Min | A: 47.89 (+2.76s | 5.4%) | California Dolphins Swim Team | 05/02/2026 | Alto Spring Jam CBA | |
| 72 | Justin Chi | 50.66 | 9 | BB Min | A: 47.89 (+2.77s | 5.5%) | DeAnza Cupertino Aquatics | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 73 | Thomas Cooke | 50.71 | 9 | BB Min | A: 47.89 (+2.82s | 5.6%) | Aptos Cabrillo Swim Club | 06/27/2025 | Valley Splash | |
| 74 | William Frohnen | 50.75 | 9 | BB Min | A: 47.89 (+2.86s | 5.6%) | San Ramon Valley Aquatics | 06/27/2026 | NVST Summer Plunge 2026 | |
| 75 | Holden Ling | 50.83 | 10 | BB Min | A: 47.89 (+2.94s | 5.8%) | The Olympic Club | 05/29/2026 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 76 | Jeffrey Li | 50.90 | 9 | BB Min | A: 47.89 (+3.01s | 5.9%) | Sunnyvale Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | |
| 77 | William Ouyang | 50.94 | 10 | BB Min | A: 47.89 (+3.05s | 6.0%) | San Ramon Valley Aquatics | 05/29/2026 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 78 | Cole Proescher | 51.49 | 10 | BB Min | A: 47.89 (+3.60s | 7.0%) | Orinda Aquatics | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 79 | Eddie Bi | 51.76 | 9 | BB Min | A: 47.89 (+3.87s | 7.5%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 80 | Robert Kolesnik | 51.81 | 10 | BB Min | A: 47.89 (+3.92s | 7.6%) | Bulldog Swim Club | 06/12/2026 | BAC Long Course | |
| 81 | Fedor Evstigneev | 51.83 | 9 | BB Min | A: 47.89 (+3.94s | 7.6%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 82 | Finnegan Persampieri | 51.88 | 10 | BB Min | A: 47.89 (+3.99s | 7.7%) | Otter Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 83 | Noah Wu | 52.02 | 10 | BB Min | A: 47.89 (+4.13s | 7.9%) | Palo Alto Stanford Aquatics | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 84 | Finn Scott | 52.07 | 10 | BB Min | A: 47.89 (+4.18s | 8.0%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 85 | George Yu | 52.23 | 10 | BB Min | A: 47.89 (+4.34s | 8.3%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 86 | Mateo Sison | 52.29 | 10 | BB Min | A: 47.89 (+4.40s | 8.4%) | San Ramon Valley Aquatics | 05/24/2025 | 2025 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 87 | Ethan Yang | 52.31 | 8 | BB Min | A: 47.89 (+4.42s | 8.4%) | Alto Swim Club | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 88 | Aaron Xue | 52.45 | 9 | BB Min | A: 47.89 (+4.56s | 8.7%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 89 | Kenneth Zhang | 52.48 | 8 | BB Min | A: 47.89 (+4.59s | 8.7%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 90 | Brendan Ma | 52.63 | 9 | BB Min | A: 47.89 (+4.74s | 9.0%) | Orinda Aquatics | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 91 | Victor Secor | 52.71 | 9 | BB Min | A: 47.89 (+4.82s | 9.1%) | Orinda Aquatics | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 92 | Zhencheng Xu | 52.98 | 10 | BB Min | A: 47.89 (+5.09s | 9.6%) | Alto Swim Club | 06/20/2026 | Alto Summer Swelter | |
| 93 | Abayan Prithviraj | 53.07 | 10 | BB Min | A: 47.89 (+5.18s | 9.8%) | Alto Swim Club | 06/20/2026 | Alto Summer Swelter | |
| 94 | Reagan Wilsey | 53.15 | 10 | BB Min | A: 47.89 (+5.26s | 9.9%) | Palo Alto Stanford Aquatics | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 95 | Neil Bisht | 53.17 | 9 | BB Min | A: 47.89 (+5.28s | 9.9%) | Valley Splash | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 96 | Cyrus Yang | 53.17 | 10 | BB Min | A: 47.89 (+5.28s | 9.9%) | Quicksilver Swimming | 06/11/2026 | 2026 SCS June AG Invite | |
| 97 | Elias Lien | 53.29 | 8 | BB Min | A: 47.89 (+5.40s | 10.1%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 98 | Joon Cha | 53.31 | 9 | BB Min | A: 47.89 (+5.42s | 10.2%) | Sunnyvale Swim Club | 05/02/2026 | Alto Spring Jam CBA | |
| 99 | Lucas Pan | 53.47 | 9 | BB Min | A: 47.89 (+5.58s | 10.4%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 100 | Evan Doong | 53.47 | 10 | BB Min | A: 47.89 (+5.58s | 10.4%) | Sunnyvale Swim Club | 05/16/2026 | 2026 DACA LC CBA+ | |
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.