USA Boys 10 & under - 50 M Breast
These rankings show the swimmers' placement within the United States.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 401 | Symon Kartsev | 54.15 | 10 | BB Min | A: 47.89 (+6.26s | 11.6%) | Sailfish | 04/05/2025 | 2025 ST TXLA 10 U Long Course Kick Off | |
| 402 | Nicolas Bastida Gonzalez | 54.18 | 10 | BB Min | A: 47.89 (+6.29s | 11.6%) | Titanes de Tym | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 403 | Duke Guo | 54.19 | 9 | BB Min | A: 47.89 (+6.30s | 11.6%) | McAllen Swim Club | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 404 | Haoran Cong | 54.20 | 10 | BB Min | A: 47.89 (+6.31s | 11.6%) | Bellevue Club Swim Team | 05/02/2025 | 2025 PN BC May Flowers | |
| 405 | Wesley Zhang | 54.23 | 10 | BB Min | A: 47.89 (+6.34s | 11.7%) | Santa Clara Swim Club | 05/30/2025 | SCSC Pacific Swimming Long Course Intrasquad | |
| 406 | Hendrix Raulerson | 54.23 | 10 | BB Min | A: 47.89 (+6.34s | 11.7%) | Nova of Virginia | 06/27/2024 | NOVA Firecracker Classic | |
| 407 | William MacPhail | 54.25 | 9 | BB Min | A: 47.89 (+6.36s | 11.7%) | Edina Swim Club | 05/03/2025 | 2025 MN RSC Pentathlon | |
| 408 | Lane Hutmacher | 54.29 | 10 | BB Min | A: 47.89 (+6.40s | 11.8%) | Watertown Area Swim Club | 07/18/2025 | 2025 SD State Long Course Meet | |
| 409 | Lukas Bell | 54.31 | 10 | BB Min | A: 47.89 (+6.42s | 11.8%) | SwimRVA | 05/17/2024 | HNVR Storm Surge 2024 | |
| 410 | Barrett Zubke | 54.35 | 9 | BB Min | A: 47.89 (+6.46s | 11.9%) | Sarasota Sharks | 06/19/2025 | 2025 Shark Open | |
| 411 | Adam Kao | 54.37 | 10 | BB Min | A: 47.89 (+6.48s | 11.9%) | Life Time Oregon Swim Team | 04/18/2025 | 2025 MAC LONG COURSE INVITATIONAL | |
| 412 | Andrew Szalay | 54.44 | 10 | B Min | BB: 54.39 (+0.05s | 0.1%) | Austin Swim Club | 04/19/2025 | 2025 ST ASC Long Course Kickoff | |
| 413 | Milo Lanigan | 54.45 | 10 | B Min | BB: 54.39 (+0.06s | 0.1%) | Pikes Peak Athletics | 07/12/2025 | 2025 CO Southern Colorado LC Championship | |
| 414 | Ryker Mahowald | 54.45 | 10 | B Min | BB: 54.39 (+0.06s | 0.1%) | Vermillion Area Swim Team | 06/20/2025 | VAST SPLASH | |
| 415 | Jay Dai | 54.47 | 10 | B Min | BB: 54.39 (+0.08s | 0.1%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 416 | Mateo Torrelli | 54.47 | 9 | B Min | BB: 54.39 (+0.08s | 0.1%) | Clearwater Aquatic Team | 06/07/2025 | 2025 Stingrays LCM Meet | |
| 417 | Louis Yu | 54.48 | 8 | B Min | BB: 54.39 (+0.09s | 0.2%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 418 | Matthew Sokotoff | 54.51 | 9 | B Min | BB: 54.39 (+0.12s | 0.2%) | Rochester Swim Club | 06/13/2025 | 2025 MN RSC Summerfest | |
| 419 | Ethan Gu | 54.52 | 10 | B Min | BB: 54.39 (+0.13s | 0.2%) | Burlingame Aquatics | 06/06/2025 | BAC C B A Meet | |
| 420 | Fedor Evstigneev | 54.54 | 9 | B Min | BB: 54.39 (+0.15s | 0.3%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 421 | Patrick Grey | 54.56 | 10 | B Min | BB: 54.39 (+0.17s | 0.3%) | Piranhas YMCA of the Suncoast | 06/20/2025 | 2025 FAST Independence Invitational | |
| 422 | Orion Blue-Smith | 54.57 | 10 | B Min | BB: 54.39 (+0.18s | 0.3%) | Palo Alto Stanford Aquatics | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 423 | Rowan Sargent | 54.62 | 9 | B Min | BB: 54.39 (+0.23s | 0.4%) | Unattached | 06/06/2025 | 2025 CO NJ Summer Solstice Invitational | |
| 424 | Benjamin Carusone | 54.63 | 9 | B Min | BB: 54.39 (+0.24s | 0.4%) | Westlake Aquatic Facility | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 425 | Aidan Woods | 54.63 | 10 | B Min | BB: 54.39 (+0.24s | 0.4%) | Fort Collins Area Swim Team | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 426 | Robert Kolesnik | 54.65 | 10 | B Min | BB: 54.39 (+0.26s | 0.5%) | Bulldog Swim Club | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 427 | Ludwik Pawelski | 54.66 | 9 | B Min | BB: 54.39 (+0.27s | 0.5%) | Sparks Piranhas Swim Team | 06/20/2025 | Reno Aquatic Club Gamble | |
| 428 | John Stetson | 54.67 | 10 | B Min | BB: 54.39 (+0.28s | 0.5%) | Bolles School Sharks | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 429 | Riaan Chandak | 54.67 | 10 | B Min | BB: 54.39 (+0.28s | 0.5%) | Milpitas Aquatic Club | 06/27/2025 | Valley Splash | |
| 430 | Laszlo Jakab | 54.68 | 10 | B: 49.79 (+4.89s | 8.9%) | Florida Elite Swimming | 06/07/2025 | 2025 Stingrays LCM Meet | ||
| 431 | Luke Chai | 54.69 | 9 | B Min | BB: 54.39 (+0.30s | 0.5%) | Pleasanton Seahawks | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 432 | Derek Nichols | 54.69 | 9 | B Min | BB: 54.39 (+0.30s | 0.5%) | Alamo Area Aquatic Association | 05/31/2025 | 2025 AAAA NE Arena Summer Classic | |
| 433 | Dashel Archer | 54.71 | 10 | B Min | BB: 54.39 (+0.32s | 0.6%) | Evergreen Hurricanes | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 434 | Hunter Atkins | 54.71 | 10 | B Min | BB: 54.39 (+0.32s | 0.6%) | Palo Alto Stanford Aquatics | 05/30/2025 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 435 | John Telischak | 54.72 | 10 | B Min | BB: 54.39 (+0.33s | 0.6%) | Palo Alto Stanford Aquatics | 06/06/2025 | BAC C B A Meet | |
| 436 | Boaz Mccabe | 54.73 | 9 | B Min | BB: 54.39 (+0.34s | 0.6%) | Cortez Water Dragons | 05/31/2025 | 2025 CO Cortez LC Summer Open | |
| 437 | Steele Schwartz | 54.74 | 10 | B Min | BB: 54.39 (+0.35s | 0.6%) | Swim Florida | 05/23/2025 | 2025 T2 Aquatics Norris Foundation LC Meet | |
| 438 | Micah Adams | 54.77 | 10 | B Min | BB: 54.39 (+0.38s | 0.7%) | Hood River Valley Swim Team | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 439 | Michel Opp | 54.79 | 10 | B Min | BB: 54.39 (+0.40s | 0.7%) | Sporting Jax Aquatic Club | 05/03/2025 | SwimRise IMX IMR Challenge | |
| 440 | Scott Maley | 54.80 | 10 | B Min | BB: 54.39 (+0.41s | 0.7%) | Rochester Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 441 | Penghao Yu | 54.80 | 10 | B Min | BB: 54.39 (+0.41s | 0.7%) | Santa Clara Swim Club | 07/19/2025 | Santa Clara Valley Splash Block Party | |
| 442 | Joao Barretto | 54.80 | 9 | B Min | BB: 54.39 (+0.41s | 0.7%) | San Ramon Valley Aquatics | 05/24/2025 | 2025 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 443 | Liam Davila | 54.83 | 9 | B Min | BB: 54.39 (+0.44s | 0.8%) | Saint Petersburg Aquatics | 01/16/2026 | 2026 TRIALS FUNDRAISER MEET | |
| 444 | Charlie Vazac | 54.84 | 9 | B Min | BB: 54.39 (+0.45s | 0.8%) | St Croix Swim Club | 06/27/2025 | 2025 SD SFST Sanford Invite | |
| 445 | Charles Qiao | 54.85 | 9 | B Min | BB: 54.39 (+0.46s | 0.8%) | Firestone Akron Swim Team | 05/16/2025 | Busbey Invitational 2025 | |
| 446 | Levi Cheung | 54.85 | 8 | B Min | BB: 54.39 (+0.46s | 0.8%) | Beaverton Area Aquatics Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 447 | David Chen | 54.88 | 9 | B Min | BB: 54.39 (+0.49s | 0.9%) | Tualatin Hills Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 448 | Ashton VanKeulen | 54.90 | 9 | B Min | BB: 54.39 (+0.51s | 0.9%) | Sioux Falls Swim Team | 06/27/2025 | 2025 SD SFST Sanford Invite | |
| 449 | Oleg Rassadin | 54.97 | 8 | B Min | BB: 54.39 (+0.58s | 1.1%) | Denver Swim Academy | 07/11/2025 | 2025 CO ACES DSA Summer Blast Last Chance | |
| 450 | Ethan Lee | 54.97 | 10 | B Min | BB: 54.39 (+0.58s | 1.1%) | Life Time Michigan Swim Team | 01/27/2026 | January 2026 Life Time Michigan Intersquad | |
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.