Eastern Zone Zone Boys 10 & under - 50 Y Breast
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 501 | Ashton Cofield | 45.56 | 7 | BB Min | A: 42.09 (+3.47s | 7.6%) | Rockville Montgomery Swim Club | 02/20/2026 | 2026 RMSC February Invitational | |
| 502 | Juwon Baek | 45.57 | 9 | BB Min | A: 42.09 (+3.48s | 7.6%) | Condors Swim Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 503 | Joseph Nguyen | 45.57 | 9 | BB Min | A: 42.09 (+3.48s | 7.6%) | Three Village Swim Club | 02/20/2026 | 2026 MR Silvers Championship South HAUP | |
| 504 | Nick Weisenborn | 45.58 | 9 | BB Min | A: 42.09 (+3.49s | 7.7%) | Stamford Sailfish Aquatic Club | 12/11/2025 | 2025 NE CRA Winter Invitational | |
| 505 | James Coleman | 45.59 | 9 | BB Min | A: 42.09 (+3.50s | 7.7%) | Arlington Aquatic Club | 10/18/2025 | 2025 AAC Fall Gator Mini Meet | |
| 506 | Zachary Shindler | 45.60 | 10 | BB Min | A: 42.09 (+3.51s | 7.7%) | Shorefront Ym-Ywha | 02/07/2026 | 2026 MR FREE Championships Meets Qualifier | |
| 507 | Tyler Kuykendall | 45.60 | 10 | BB Min | A: 42.09 (+3.51s | 7.7%) | Sprc Stingrays | 11/14/2025 | GBSA 2025 Thanksgiving Swim Fest | |
| 508 | Atticus Gancsos | 45.61 | 10 | BB Min | A: 42.09 (+3.52s | 7.7%) | Badger Swim Club,Inc. | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 509 | Everett Lan | 45.62 | 8 | BB Min | A: 42.09 (+3.53s | 7.7%) | Asphalt Green Unified Aquatics | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 510 | Matias Venturino | 45.62 | 9 | BB Min | A: 42.09 (+3.53s | 7.7%) | Rockville Montgomery Swim Club | 03/20/2026 | 2026 RMSC Spring Finale | |
| 511 | Ethan Fu | 45.63 | 10 | BB Min | A: 42.09 (+3.54s | 7.8%) | Revolution Swim Club | 01/30/2026 | 2026 NE GS Silver Championships | |
| 512 | Theodore Herrera | 45.64 | 10 | BB Min | A: 42.09 (+3.55s | 7.8%) | Crimson Aquatics | 01/09/2026 | 2026 NE CRIM Jan Team Specialty | |
| 513 | John Pekkanen | 45.65 | 10 | BB Min | A: 42.09 (+3.56s | 7.8%) | All Star Aquatics | 12/05/2025 | 2025 Christmas Championships | |
| 514 | John Calhoun | 45.67 | 10 | BB Min | A: 42.09 (+3.58s | 7.8%) | Nova of Virginia | 01/16/2026 | GSA January Jump Start 2026 | |
| 515 | Kyle Teng | 45.68 | 8 | BB Min | A: 42.09 (+3.59s | 7.9%) | Rockville Montgomery Swim Club | 02/14/2026 | 2026 RMSC Gender Blender Mini Meet | |
| 516 | Denys Synchuk | 45.69 | 9 | BB Min | A: 42.09 (+3.60s | 7.9%) | Unattached | 04/11/2025 | 2025 Boys Girls Clubs National Swim Champs | |
| 517 | Wilson Qi | 45.69 | 9 | BB Min | A: 42.09 (+3.60s | 7.9%) | Asphalt Green Unified Aquatics | 03/07/2026 | 2026 MR AGUA Last Chance Invitational | |
| 518 | Jude Jeon | 45.69 | 9 | BB Min | A: 42.09 (+3.60s | 7.9%) | Washingtonians Swim Club | 01/17/2026 | 2026 PV January Open Audrey Moore | |
| 519 | Thomas Wyss | 45.69 | 9 | BB Min | A: 42.09 (+3.60s | 7.9%) | Arlington Aquatic Club | 12/12/2025 | 2025 MAKO HOLIDAY INVITATIONAL | |
| 520 | Jayden Teng | 45.69 | 10 | BB Min | A: 42.09 (+3.60s | 7.9%) | Arctic Aquatics | 03/13/2026 | 2026 NE CRA End Of Season March Invite | |
| 521 | Adam Cong | 45.70 | 10 | BB Min | A: 42.09 (+3.61s | 7.9%) | Arctic Aquatics | 03/13/2026 | 2026 NE CRA End Of Season March Invite | |
| 522 | Kyle Wang | 45.70 | 10 | BB Min | A: 42.09 (+3.61s | 7.9%) | Freedom Aquatics | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 523 | Dominic Coyle | 45.70 | 10 | BB Min | A: 42.09 (+3.61s | 7.9%) | Cardinal and Gold Aquatics | 03/13/2026 | 2026 Speedo Maryland Junior Championship Si | |
| 524 | Cole Smith | 45.71 | 9 | BB Min | A: 42.09 (+3.62s | 7.9%) | Mnbb YMCA Seals Swim Team | 03/21/2026 | 2026 NE YNS YMCA New England Championship | |
| 525 | Joseph Sweitzer | 45.72 | 9 | BB Min | A: 42.09 (+3.63s | 7.9%) | Portland Porpoise Swim Club | 12/12/2025 | 2025 NE CRIM Frosty Frenzy Trials Finals | |
| 526 | Wallace Hardy | 45.72 | 9 | BB Min | A: 42.09 (+3.63s | 7.9%) | Rockville Montgomery Swim Club | 02/20/2026 | 2026 RMSC February Invitational | |
| 527 | Sanderling Cart | 45.73 | 9 | BB Min | A: 42.09 (+3.64s | 8.0%) | Purple Valley Aquatics | 11/07/2025 | 2025 NE UVAC Dorsi Raynolds Memorial Meet C | |
| 528 | Khai Cho-Khaliq | 45.75 | 9 | BB Min | A: 42.09 (+3.66s | 8.0%) | Rockville Montgomery Swim Club | 02/20/2026 | 2026 RMSC February Invitational | |
| 529 | Nolan Thanh | 45.76 | 10 | BB Min | A: 42.09 (+3.67s | 8.0%) | Quince Orchard Swim Academy | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 530 | Julian Tai | 45.77 | 9 | BB Min | A: 42.09 (+3.68s | 8.0%) | Qns Aquatic Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 531 | Troy Williams | 45.78 | 9 | BB Min | A: 42.09 (+3.69s | 8.1%) | York Swim Club of Northern Vir | 02/13/2026 | 2026 NCAP Winter Qualifier | |
| 532 | Jacob Lee | 45.79 | 8 | BB Min | A: 42.09 (+3.70s | 8.1%) | Twisters Swim Club | 03/07/2026 | 2026 MR Metro 8 Under Championships | |
| 533 | Mathew Sadovskyy | 45.80 | 10 | BB Min | A: 42.09 (+3.71s | 8.1%) | Matchpoint Nyc | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 534 | Luka Shvartsman | 45.80 | 10 | BB Min | A: 42.09 (+3.71s | 8.1%) | Condors Swim Club | 12/05/2025 | 2025 MR BGNW December 14 Under Invitational | |
| 535 | Eric Ruan | 45.81 | 10 | BB Min | A: 42.09 (+3.72s | 8.1%) | Commonwealth Swimming | 03/13/2026 | 2026 NE INST NE Cup | |
| 536 | Ethan Liu | 45.81 | 9 | BB Min | A: 42.09 (+3.72s | 8.1%) | Long Island Express | 01/16/2026 | 2026 MR LIE Winterfest Invitational | |
| 537 | Victor Varga | 45.82 | 9 | BB Min | A: 42.09 (+3.73s | 8.1%) | Tollefson Swimming | 11/14/2025 | ISCA Fall Classic Championship 2025 | |
| 538 | Wyatt Shaw | 45.83 | 9 | BB Min | A: 42.09 (+3.74s | 8.2%) | Nova of Virginia | 03/21/2026 | NOVA Short Course Send Off 2026 | |
| 539 | Rex Zhao | 45.83 | 10 | B: 43.49 (+2.34s | 5.1%) | Machine Aquatics | 12/04/2025 | 2025 PV Turkey Claus Showdown | ||
| 540 | Connor Huang | 45.85 | 10 | BB Min | A: 42.09 (+3.76s | 8.2%) | Metro Dynasty Swim Team | 02/13/2026 | 39th Black History Swim Meet | |
| 541 | Matias Venturino | 45.86 | 9 | BB Min | A: 42.09 (+3.77s | 8.2%) | Rockville Montgomery Swim Club | 02/20/2026 | 2026 RMSC February Invitational | |
| 542 | Jackson Donahue | 45.86 | 9 | BB Min | A: 42.09 (+3.77s | 8.2%) | York Swim Club of Northern Vir | 03/20/2026 | March Madness 2026 | |
| 543 | Nicolas Grant | 45.89 | 10 | BB Min | A: 42.09 (+3.80s | 8.3%) | Rockville Montgomery Swim Club | 10/17/2025 | 2025 RMSC October Kick Off Classic | |
| 544 | Rishan Shah | 45.89 | 9 | BB Min | A: 42.09 (+3.80s | 8.3%) | United Swim Club | 02/06/2026 | 2026 NE CRA Last Chance February Invite | |
| 545 | Harrison Wu | 45.90 | 8 | BB Min | A: 42.09 (+3.81s | 8.3%) | Long Island Aquatic Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 546 | Nishaad Rao | 45.91 | 10 | BB Min | A: 42.09 (+3.82s | 8.3%) | Shawmut Aquatic Club | 03/13/2026 | 2026 Shawmut NE Cup Championship | |
| 547 | Christian Hochberg | 45.91 | 10 | BB Min | A: 42.09 (+3.82s | 8.3%) | All Star Aquatics | 02/13/2026 | 2026 ASA President S Day Classic | |
| 548 | Julian Xu | 45.91 | 10 | BB Min | A: 42.09 (+3.82s | 8.3%) | Westchester Aquatic Club | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 549 | Theodore Scharper | 45.91 | 9 | BB Min | A: 42.09 (+3.82s | 8.3%) | North Baltimore Aquatic Club | 11/14/2025 | 2025 NBAC Thanksgiving Meet | |
| 550 | Arden Earl | 45.92 | 9 | BB Min | A: 42.09 (+3.83s | 8.3%) | Lynchburg Aquatic Club | 02/27/2026 | 2026 SW District Champs 9 Over | |
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.