USA Boys 10 & under - 50 Y 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1401 | Roanan De Groot | 44.93 | 10 | BB Min | A: 42.09 (+2.84s | 6.3%) | Sioux Center Seahawks | 01/23/2026 | SFST SD 2026 January Invite | |
| 1402 | Vince Loguinov | 44.94 | 10 | BB Min | A: 42.09 (+2.85s | 6.3%) | Unattached | 02/21/2025 | 2025 Gulf 12 Under Champs (TASC) | |
| 1403 | Enrique Guajardo | 44.94 | 10 | BB Min | A: 42.09 (+2.85s | 6.3%) | EL Paso Border Land Swim Team | 12/19/2025 | 2025 BD Leo Cancellare Memorial Swim Meet | |
| 1404 | Max Peterson | 44.94 | 10 | BB Min | A: 42.09 (+2.85s | 6.3%) | Cottonwood Heights Aquatics | 11/07/2025 | 2026 UT CHAT November Intersquad | |
| 1405 | Phearce Davis-Thompson | 44.95 | 10 | BB Min | A: 42.09 (+2.86s | 6.4%) | Lone Star Aquatic Club | 10/26/2025 | 2025 ST TXLA 10 U Fall Kick Off | |
| 1406 | Joseph Cassidy | 44.95 | 10 | BB Min | A: 42.09 (+2.86s | 6.4%) | Fmy Gators | 12/05/2025 | 2025 Candy Cane Swim Meet | |
| 1407 | Elliott Linsmeier | 44.95 | 10 | BB Min | A: 42.09 (+2.86s | 6.4%) | Ramona Swim Team | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 1408 | Derek McLaughlin | 44.96 | 9 | BB Min | A: 42.09 (+2.87s | 6.4%) | Seward Swim Club | 11/22/2025 | 2025 MW HLA Goggle Gobble | |
| 1409 | Grayson King | 44.96 | 9 | BB Min | A: 42.09 (+2.87s | 6.4%) | Riptide Swim Team | 02/27/2026 | 2026 MN MAN Minnesota Regional Championship | |
| 1410 | Oliver Zang | 44.96 | 10 | BB Min | A: 42.09 (+2.87s | 6.4%) | Nova of Virginia | 12/12/2025 | 2025 HVAC Winterfest Invitational | |
| 1411 | Landon Fradua | 44.96 | 10 | BB Min | A: 42.09 (+2.87s | 6.4%) | Sachem Swim Club | 03/27/2026 | 2026 MR Bronze Championship South LIE | |
| 1412 | Ace Zhang | 44.96 | 8 | BB Min | A: 42.09 (+2.87s | 6.4%) | Twisters Swim Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 1413 | John Glenn | 44.97 | 9 | BB Min | A: 42.09 (+2.88s | 6.4%) | SlipStream Aquatics | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 1414 | Evan Willis | 44.97 | 10 | BB Min | A: 42.09 (+2.88s | 6.4%) | Madison Swimming Association | 01/16/2026 | 2026 HSA TYR Invitational | |
| 1415 | Adam Milgrom | 44.98 | 10 | BB Min | A: 42.09 (+2.89s | 6.4%) | Hurricanes Swim Team | 03/07/2026 | 2026 MN RSC 10 U State Championship | |
| 1416 | Jack Swanson | 44.98 | 10 | BB Min | A: 42.09 (+2.89s | 6.4%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 03/07/2026 | 2026 Lake Huron Regional Meet | |
| 1417 | Austin Zhou | 44.98 | 9 | BB Min | A: 42.09 (+2.89s | 6.4%) | Pacific Dragons Swim Team | 03/07/2026 | 2026 PDST Mar Pentathlon Last Chance Approved | |
| 1418 | Joseph Tomicic | 44.98 | 10 | BB Min | A: 42.09 (+2.89s | 6.4%) | Katy Aquatic Team For Youth | 01/18/2025 | 2025 LSST January Frosty Meet | |
| 1419 | Eli Mickelson | 44.98 | 9 | BB Min | A: 42.09 (+2.89s | 6.4%) | Carpet Capital Aquatics Club | 01/09/2026 | 2026 MCC January Invite | |
| 1420 | Victor Zhou | 44.99 | 10 | BB Min | A: 42.09 (+2.90s | 6.4%) | Machine Aquatics | 02/20/2026 | 2026 Machine Qualifier | |
| 1421 | Gabe Hansen | 44.99 | 10 | BB Min | A: 42.09 (+2.90s | 6.4%) | Dayton Raiders | 03/12/2026 | 2026 OH SC Junior Championships | |
| 1422 | E Bendoym | 44.99 | 10 | BB Min | A: 42.09 (+2.90s | 6.4%) | South Florida Aquatic Club | 02/20/2026 | 2026 FG SCY BB Championships SOUTH | |
| 1423 | Obinna Uzowulu | 44.99 | 10 | BB Min | A: 42.09 (+2.90s | 6.4%) | Alamo Area Aquatic Association | 12/12/2025 | 2025 ST AAAA NS Winter Wonderland | |
| 1424 | Enzo Lourenco | 44.99 | 8 | BB Min | A: 42.09 (+2.90s | 6.4%) | McCallie-GPS Aquatics | 02/13/2026 | 2026 SE BAY Region 2 Championships Copied | |
| 1425 | William Ouyang | 44.99 | 10 | BB Min | A: 42.09 (+2.90s | 6.4%) | San Ramon Valley Aquatics | 03/07/2026 | SRVA Last Chance Meet B BB+ | |
| 1426 | Conrad Postle | 45.00 | 9 | BB Min | A: 42.09 (+2.91s | 6.5%) | West Florida Lightning Aquatic | 01/10/2026 | 2026 WINTERFEST SWIM MEET | |
| 1427 | Vincent Grey | 45.00 | 9 | BB Min | A: 42.09 (+2.91s | 6.5%) | Sprc Stingrays | 11/14/2025 | GBSA 2025 Thanksgiving Swim Fest | |
| 1428 | Myer Tan | 45.00 | 9 | BB Min | A: 42.09 (+2.91s | 6.5%) | Three Village Swim Club | 03/27/2026 | 2026 MR Bronze Championship South LIE | |
| 1429 | Henry Jarchow | 45.01 | 9 | BB Min | A: 42.09 (+2.92s | 6.5%) | St Croix Swim Club | 02/27/2026 | 2026 MN MAN Minnesota Regional Championship | |
| 1430 | Maxwell Yao | 45.01 | 9 | BB Min | A: 42.09 (+2.92s | 6.5%) | Gilroy Gators Swim Team | 10/25/2025 | GGST Spooktacular 2025 | |
| 1431 | John Murray | 45.01 | 10 | BB Min | A: 42.09 (+2.92s | 6.5%) | Greater Lowell Family YMCA | 03/21/2026 | 2026 NE YNS YMCA New England Championship | |
| 1432 | Nathan Plymale | 45.01 | 10 | BB Min | A: 42.09 (+2.92s | 6.5%) | Bowling Green Swim Club | 02/19/2026 | 2026 OH SOS SC Regional Championships | |
| 1433 | Leo Yang | 45.02 | 10 | BB Min | A: 42.09 (+2.93s | 6.5%) | YMCA Fairfax County Reston | 02/07/2026 | 2026 MAKO QUALIFIER | |
| 1434 | Thomas Balban | 45.02 | 9 | BB Min | A: 42.09 (+2.93s | 6.5%) | Phoenix Aquatic Club | 03/13/2026 | 2026 MR SC Junior Metropolitan Championships | |
| 1435 | George Howe | 45.03 | 9 | BB Min | A: 42.09 (+2.94s | 6.5%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 12/06/2025 | SLA Holiday Blast | |
| 1436 | Hei Chan | 45.03 | 10 | BB Min | A: 42.09 (+2.94s | 6.5%) | Alto Swim Club | 03/07/2026 | DACA CBA Meet | |
| 1437 | Ivan Smarshchok | 45.03 | 8 | BB Min | A: 42.09 (+2.94s | 6.5%) | King Aquatic Club | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
| 1438 | Austin Pham | 45.04 | 10 | BB Min | A: 42.09 (+2.95s | 6.5%) | Foothills Swim Team | 03/06/2026 | 2026 CO 14 U Silver State | |
| 1439 | Xander Liu | 45.04 | 10 | BB Min | A: 42.09 (+2.95s | 6.5%) | Sailfish | 03/28/2026 | 2026 ST SGA Spring Fling Meet | |
| 1440 | Ethan Zhong | 45.05 | 9 | BB Min | A: 42.09 (+2.96s | 6.6%) | Quicksilver Swimming | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 1441 | Carson Yin | 45.05 | 10 | BB Min | A: 42.09 (+2.96s | 6.6%) | Tualatin Hills Swim Club | 11/07/2025 | 2025 THSC November Open | |
| 1442 | William Mager | 45.05 | 9 | BB Min | A: 42.09 (+2.96s | 6.6%) | Green Bay Swim Club | 03/29/2025 | 2025 MN MYAS Midwest Regional Swim Meet | |
| 1443 | Robert Liu | 45.06 | 9 | BB Min | A: 42.09 (+2.97s | 6.6%) | Csp Tideriders | 02/27/2026 | Ozark Division I Championship | |
| 1444 | Anders Eklund | 45.07 | 10 | BB Min | A: 42.09 (+2.98s | 6.6%) | Great Wolf Swim Team | 02/13/2026 | 2026 MN RSC President S Day Meet | |
| 1445 | Jase Lowry | 45.07 | 10 | BB Min | A: 42.09 (+2.98s | 6.6%) | Heartland Swim Assoc | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 1446 | Benson Lao | 45.07 | 9 | BB Min | A: 42.09 (+2.98s | 6.6%) | Long Island Aquatic Club | 10/25/2025 | 2025 MR LIAC Chappy S Invitational | |
| 1447 | Theodore Janson | 45.08 | 10 | BB Min | A: 42.09 (+2.99s | 6.6%) | Central Minnesota Aquatics | 02/27/2026 | 2026 MN MTKA Minnesota Regional Championship | |
| 1448 | Wolf Smith | 45.08 | 10 | BB Min | A: 42.09 (+2.99s | 6.6%) | Atlantis Swimming | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 1449 | Declan Sederholm | 45.08 | 10 | BB Min | A: 42.09 (+2.99s | 6.6%) | Hilltop Aquatic Swim Team | 03/05/2025 | 2025 Short Course UTAGS Championships | |
| 1450 | Emrys Davenport | 45.08 | 10 | BB Min | A: 42.09 (+2.99s | 6.6%) | Denver Triton Swim Team | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
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.