USA Boys 10 & under - 50 Y Back
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 4401 | Calvin Kummer | 44.72 | 8 | B Min | BB: 42.89 (+1.83s | 4.1%) | Aquatic Team Of Mecklenburg | 03/20/2026 | 2026 BRSL Championships | |
| 4402 | Luke Atanasov | 44.72 | 8 | B Min | BB: 42.89 (+1.83s | 4.1%) | Tualatin Hills Swim Club | 01/16/2026 | 2026 THSC 14 U Winter Showcase | |
| 4403 | Ethan Xu | 44.72 | 8 | B Min | BB: 42.89 (+1.83s | 4.1%) | Riptide Swim Team | 12/12/2025 | 2025 MN SCSC Winter Carnival | |
| 4404 | Rocky Killingsworth | 44.72 | 10 | B Min | BB: 42.89 (+1.83s | 4.1%) | Lakeridge Swim Team | 01/17/2025 | 2025 Blizzard Blast Swim Meet | |
| 4405 | Tanner Kerby | 44.72 | 9 | B Min | BB: 42.89 (+1.83s | 4.1%) | Enfinity Aquatic Club | 12/19/2025 | EAC Winter Invitational | |
| 4406 | William Fatt | 44.72 | 8 | B Min | BB: 42.89 (+1.83s | 4.1%) | Nova of Virginia | 11/22/2025 | NOVA Cranberry Contender | |
| 4407 | Colton Ohnstad | 44.73 | 10 | B Min | BB: 42.89 (+1.84s | 4.1%) | West Express Swim Team | 02/07/2026 | 2026 MN WEST EXPRESS LAST CHANCE MEET | |
| 4408 | Benson Maughan | 44.73 | 9 | B Min | BB: 42.89 (+1.84s | 4.1%) | Piranhas YMCA of the Suncoast | 01/23/2026 | BLOOMIN FAST SWIM MEET | |
| 4409 | Constantine Balduyeu | 44.73 | 10 | B Min | BB: 42.89 (+1.84s | 4.1%) | Bolles School Sharks | 01/16/2026 | 2026 Pentathlon | |
| 4410 | Mick Resnick | 44.73 | 10 | B Min | BB: 42.89 (+1.84s | 4.1%) | The St. James Swim Club | 03/21/2026 | 2026 MAKO SPRING FLING | |
| 4411 | Ronin Bennett | 44.73 | 10 | B Min | BB: 42.89 (+1.84s | 4.1%) | Prince William Swim Club | 01/10/2026 | 2026 RAYS Jeff Rouse Invitational | |
| 4412 | David Reggio | 44.73 | 9 | B Min | BB: 42.89 (+1.84s | 4.1%) | Kissimmee Swim Association | 02/28/2026 | 2026 Spring Area 2 Championships | |
| 4413 | Finley Roscoe | 44.73 | 9 | B Min | BB: 42.89 (+1.84s | 4.1%) | Wallingford YMCA Dolphins | 03/21/2026 | 2026 NE YNS YMCA New England Championship | |
| 4414 | Caleb Reyes | 44.74 | 10 | B Min | BB: 42.89 (+1.85s | 4.1%) | Winning Waters Aquatics Club | 01/10/2026 | 2026 ST AHAC B Champs South Copied | |
| 4415 | Jordan Lam | 44.74 | 10 | B Min | BB: 42.89 (+1.85s | 4.1%) | Parkway-Rockwood Gateway Swim | 03/07/2026 | 2026 GTWY 8 Under Champs | |
| 4416 | Alejandro Romero | 44.74 | 8 | B Min | BB: 42.89 (+1.85s | 4.1%) | Phoenix Aquatic Club | 11/08/2025 | 2025 MR PAC Maria Parmanan Invitational | |
| 4417 | Andrew Nifong | 44.75 | 10 | B Min | BB: 42.89 (+1.86s | 4.2%) | Crimson Tide Aquatics | 02/06/2026 | 2026 SES Region 3 Champions | |
| 4418 | Isaac Eyo | 44.75 | 9 | B Min | BB: 42.89 (+1.86s | 4.2%) | Cavalier Aquatics/Piedmont Fam | 01/31/2026 | LY Vs CA Y January Dual | |
| 4419 | Lionell Hristov | 44.75 | 10 | B Min | BB: 42.89 (+1.86s | 4.2%) | YMCA of Greater Nashua Storm | 03/20/2026 | 2026 NE ORO TSSA Champs | |
| 4420 | Lochlan Farley | 44.75 | 10 | B Min | BB: 42.89 (+1.86s | 4.2%) | Long Island Aquatic Club | 02/06/2026 | 2026 MR YMID February Classic Copied | |
| 4421 | George Peters | 44.76 | 10 | B Min | BB: 42.89 (+1.87s | 4.2%) | Rochester Swim Club | 02/14/2025 | 2025 MN RSC President S Day Meet | |
| 4422 | Nikshay Chandrasekar | 44.76 | 9 | B Min | BB: 42.89 (+1.87s | 4.2%) | Pro Swimming | 03/06/2026 | 2026 PN PRO March Last Chance Intra Apprived | |
| 4423 | Phillip Adams | 44.76 | 9 | B Min | BB: 42.89 (+1.87s | 4.2%) | Swim Team of Placentia | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 4424 | Philip Yordanov | 44.76 | 9 | B Min | BB: 42.89 (+1.87s | 4.2%) | Weymouth Club Waves | 01/16/2026 | 2026 NE CS Bronze Championships | |
| 4425 | Balazs Williams | 44.76 | 10 | B Min | BB: 42.89 (+1.87s | 4.2%) | Piranhas YMCA of the Suncoast | 01/30/2026 | 2026 FAST February Helping Hands Invite | |
| 4426 | Parker Jimenez | 44.77 | 8 | B Min | BB: 42.89 (+1.88s | 4.2%) | Ensworth Aquatics | 12/13/2025 | 2025 Marshmallow Mini | |
| 4427 | Sebastien Oum | 44.77 | 7 | B Min | BB: 42.89 (+1.88s | 4.2%) | Machine Aquatics | 02/20/2026 | 2026 Machine Qualifier | |
| 4428 | Gerard LaFalce | 44.77 | 9 | B Min | BB: 42.89 (+1.88s | 4.2%) | Hydra Aquatics | 12/05/2025 | 2025 Christmas Championships | |
| 4429 | Ahaan Iragavarapu | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | Pro Swimming | 01/17/2026 | 2026 PN SMAC Winter Invitational Approved | |
| 4430 | Dmitry Klyukin | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | Tide Swimming | 09/20/2025 | 2025 TIDE King Neptune Meet | |
| 4431 | Leon Aksenov | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | North Shore Swim Club | 03/07/2026 | 2026 NE NSSC March 7 SJP | |
| 4432 | Gabriel Martinez | 44.77 | 9 | B Min | BB: 42.89 (+1.88s | 4.2%) | Aces Swim Club | 12/12/2025 | 2025 CO NJ Blizzard Invite | |
| 4433 | Landon Marshall | 44.77 | 9 | B Min | BB: 42.89 (+1.88s | 4.2%) | Lake Erie Silver Dolphins | 02/19/2026 | 2026 OH Cleveland SC Regional Championships | |
| 4434 | Miles Shuboy | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | Grosse Pointe Gators | 03/07/2026 | 2026 Lake Erie Regional Meet | |
| 4435 | Taylor Cabana | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | Westerville Aquatic Club | 02/19/2026 | 2026 OH WOR SC Regional Championships | |
| 4436 | Lucas Zhu | 44.77 | 9 | B Min | BB: 42.89 (+1.88s | 4.2%) | Tac Titans | 03/25/2026 | 2026 TAC TITANS Tarheel States Meet | |
| 4437 | Theodore Cook | 44.77 | 9 | B Min | BB: 42.89 (+1.88s | 4.2%) | SlipStream Aquatics | 03/13/2026 | Mile High Championship Invitational | |
| 4438 | Basil Erickson | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | Excel Aquatics | 11/22/2025 | 2025 PN November AGI Div 1 (PDST) | |
| 4439 | Clark Galyen | 44.77 | 10 | B Min | BB: 42.89 (+1.88s | 4.2%) | YMCA of Virginia\\\\\\'s Blue Ridge | 03/07/2026 | PYSA Champs 2026 | |
| 4440 | Caleb McGovern | 44.78 | 10 | B Min | BB: 42.89 (+1.89s | 4.2%) | Portland Aquatic Club | 09/27/2025 | FGSC 2025 Season Opener Pentathlon | |
| 4441 | Hawkins Blackstone | 44.78 | 9 | B Min | BB: 42.89 (+1.89s | 4.2%) | Nitro Swimming | 12/12/2025 | 2025 ST AAAA NS Winter Wonderland | |
| 4442 | James Mosier | 44.78 | 10 | B Min | BB: 42.89 (+1.89s | 4.2%) | Tsunami Swimming | 02/13/2026 | 2026 Northern District 12 Under Championship | |
| 4443 | Sven Kelley | 44.78 | 9 | B Min | BB: 42.89 (+1.89s | 4.2%) | North Jeffco Swim Team | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 4444 | Carter Page | 44.78 | 9 | B Min | BB: 42.89 (+1.89s | 4.2%) | Tac Titans | 12/19/2025 | 2025 TAC TITANS Jingle Bells Meet | |
| 4445 | Micah Brown | 44.79 | 8 | B Min | BB: 42.89 (+1.90s | 4.2%) | MN Flyers Swim Team | 02/21/2026 | 2026 MN FOXJ MN Bronze Championship | |
| 4446 | Bryan Yu | 44.79 | 8 | B Min | BB: 42.89 (+1.90s | 4.2%) | Life Time Fitness New York Swi | 02/28/2026 | 2026 MR QNS I Know I Can Invitational | |
| 4447 | Noah Paulson | 44.79 | 10 | B Min | BB: 42.89 (+1.90s | 4.2%) | Mecklenburg Swim Association | 02/07/2026 | MSA IM Tough Meet 2026 | |
| 4448 | Kai Vo | 44.79 | 9 | B Min | BB: 42.89 (+1.90s | 4.2%) | Splash Aquatics | 02/26/2026 | 2026 HI Hawaiian Swimming SCY AGChamps | |
| 4449 | Daman Somal | 44.79 | 10 | B Min | BB: 42.89 (+1.90s | 4.2%) | Unattached | 03/07/2026 | 2026 Lake Michigan Regional Meet | |
| 4450 | Roch Robinson | 44.79 | 8 | B Min | BB: 42.89 (+1.90s | 4.2%) | Nation\\\\\\'s Capital Swim Club | 10/18/2025 | 2025 AAC Fall Gator Mini Meet | |
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.