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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
4301 Guillermo Dinares Cardenal 45.45 8 B Min BB: 42.89 (+2.56s | 5.6%) Vashon Seals Swim Team 04/26/2025 2025 PN UPAC Mark Olson Invitational
4302 Jonah VerMeer 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Aquajets Swim Team 02/07/2026 2026 MN AQJT February Invite
4303 William MacPhail 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Edina Swim Club 11/08/2025 2025 MN WOLF HOWL AT THE MOON INVITE
4304 Ricky Gunther 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Gsa 10/24/2025 2025 GCY Spooktacular
4305 Noah Johnson 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Long Island Aquatic Club 03/27/2026 2026 MR Bronze Championship South LIE
4306 Matthew DiRuzzo 45.46 9 B Min BB: 42.89 (+2.57s | 5.7%) SlipStream Aquatics 02/13/2026 2026 CO NJ Groundhog Invite
4307 Matthew Chen 45.46 9 B Min BB: 42.89 (+2.57s | 5.7%) Rockville Montgomery Swim Club 02/20/2026 2026 RMSC February Invitational
4308 Evan Hu 45.46 8 B Min BB: 42.89 (+2.57s | 5.7%) Pleasanton Seahawks 10/18/2025 PC SRVA SCY B BB+ Meet
4309 Jaroslav Rezac 45.46 9 B Min BB: 42.89 (+2.57s | 5.7%) Longmont Swim Club 03/06/2026 2026 CO NCS Winter District Championships
25 Back
23.07
23.07
50 Back
22.39
45.46
50 Back
45.46
4310 Aiden Pruitt 45.46 9 B Min BB: 42.89 (+2.57s | 5.7%) Southeast Tennessee Swimming 09/20/2025 2025 Fall Kickoff Classic Meet Copied
4311 William Marilla 45.47 9 B Min BB: 42.89 (+2.58s | 5.7%) Cca Marlins of Virginia 12/11/2025 2025 East Coast WinterFest
4312 Noah Oh 45.47 10 B Min BB: 42.89 (+2.58s | 5.7%) Cascade Swim Club 03/07/2026 2026 PDST Mar Pentathlon Last Chance Approved
4313 Chase Blankenhorn 45.47 9 B Min BB: 42.89 (+2.58s | 5.7%) Rima United 12/11/2025 2025 NE SHAWMUT Candy Cane Classic
4314 Luke Hammer 45.48 9 B Min BB: 42.89 (+2.59s | 5.7%) Morgan Family Sea Dragons 01/24/2026 2026 WA State Y Championship Meet
4315 Mattis Shneyder 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) Matchpoint Nyc 02/07/2026 2026 MR FREE Championships Meets Qualifier
4316 Nathan Nguyen 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) San Jose Goosemonkeys 10/25/2025 GGST Spooktacular 2025
4317 Bradlee Luxama 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) YMCA of Middletown Barracudas 03/27/2026 2026 MR Metro Bronze Championship North
4318 Davi Dressler 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) Asphalt Green Unified Aquatics 01/30/2026 2026 MR LIE Second Chance Invitational
4319 Evan Morehouse 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) Brookings Swim Club 11/08/2025 2025 SD Brookings Swim Club Medley Scramble
25 Back
21.94
21.94
50 Back
23.54
45.48
50 Back
45.48
4320 Liam Palm 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) Riptide Swim Team 02/27/2026 2026 MN MAN Minnesota Regional Championship
4321 Isaac Printup 45.49 9 B Min BB: 42.89 (+2.60s | 5.7%) Rockville Montgomery Swim Club 10/17/2025 2025 RMSC October Kick Off Classic
4322 Emerson Mallick 45.49 9 B Min BB: 42.89 (+2.60s | 5.7%) Rockville Montgomery Swim Club 10/17/2025 2025 RMSC October Kick Off Classic
4323 Michael Bruening 45.49 9 B Min BB: 42.89 (+2.60s | 5.7%) Parkway-Rockwood Gateway Swim 06/24/2026 GTWY Get Your Best Yard Times
4324 Micah Ryckaert 45.49 10 B Min BB: 42.89 (+2.60s | 5.7%) Oly Swimming 12/12/2025 OLY Swimming Holiday Bowl
4325 Luke Silva 45.49 10 B Min BB: 42.89 (+2.60s | 5.7%) Long Island Aquatic Club 03/27/2026 2026 MR Bronze Championship South LIE
4326 Micah Adams 45.49 10 B Min BB: 42.89 (+2.60s | 5.7%) Hood River Valley Swim Team 02/22/2025 2025 Arena Short Course 10 U Championships
4327 Diego Maulini 45.49 10 B Min BB: 42.89 (+2.60s | 5.7%) Atlantis Swimming Club 12/06/2025 2025 NMST December Holiday Invite
4328 Samuel Kinsman 45.50 9 B Min BB: 42.89 (+2.61s | 5.7%) North Whidbey Aquatic Club 06/19/2026 2026 PN SRST Summer Invitational Approved
4329 William Halstead 45.50 10 B Min BB: 42.89 (+2.61s | 5.7%) Atlantis Aquatics 03/20/2026 2026 NE ORO TSSA Champs
4330 Karson Tate 45.50 10 B Min BB: 42.89 (+2.61s | 5.7%) Cypress Fairbanks Swim Club 02/21/2025 MAC Hosted 2025 Gulf 12 Under Champs
4331 Maxwell Alred 45.50 9 B Min BB: 42.89 (+2.61s | 5.7%) Marshall County Swim Club 12/05/2025 2025 SE Christmas In Auburn
4332 Mark Batrakoff 45.51 8 B Min BB: 42.89 (+2.62s | 5.8%) Freedom Aquatics 01/10/2026 2026 MR FREE Freedom Winter Magic
4333 Henry Jian 45.51 10 B Min BB: 42.89 (+2.62s | 5.8%) Pacific Dragons Swim Team 12/06/2025 2025 PN Fall Divisionals, Division 1 OCA
4334 Arthur Cahoy 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Alto Swim Club 03/07/2026 DACA CBA Meet
4335 Oleksandr Sydorchuk 45.51 10 B Min BB: 42.89 (+2.62s | 5.8%) Bure-Aqua Academy 01/23/2026 2026 CO TOPS Colorado Open
25 Back
22.16
22.16
50 Back
23.35
45.51
50 Back
45.51
4336 Charlie Wang 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) DeAnza Cupertino Aquatics 11/15/2025 De Anza Cupertino Aquatics CBA+ Meet
4337 Maximiliano Botello 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Dearborn Dolphins 03/07/2026 2026 Lake Erie Regional Meet
4338 Jude Notter 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Birmingham \\\\\\'y\\\\\\' Blue Dolphins 02/27/2026 2026 Junior Cup
4339 Maddox Fink 45.51 10 B Min BB: 42.89 (+2.62s | 5.8%) Madison Swimming Association 02/27/2026 2026 SE Southeastern Winter SC Championships
4340 Imran Diyashev 45.52 10 B Min BB: 42.89 (+2.63s | 5.8%) Tuan Elite Swim Team Club 10/19/2024 2024 LSST October Open Meet
4341 Micah Greer 45.52 10 B Min BB: 42.89 (+2.63s | 5.8%) Manchester Makos Swim Team 04/11/2026 2026 Sprint Medal Meet
4342 Abai Zhumagaliyev 45.52 9 B Min BB: 42.89 (+2.63s | 5.8%) Tuan Elite Swim Team Club 12/20/2024 2024 Gulf Fall Champs (ESCA AMBU)
4343 Matthew Grimes 45.52 10 B Min BB: 42.89 (+2.63s | 5.8%) Club Wolverine 01/16/2026 SLA Arctic Blast 2026
4344 Jackson Lorentz 45.53 10 B Min BB: 42.89 (+2.64s | 5.8%) La Crosse Area Family YMCA Swi 10/10/2025 2025 MN RSC Fall Frenzy
4345 George Howe 45.53 9 B Min BB: 42.89 (+2.64s | 5.8%) Birmingham \\\\\\'y\\\\\\' Blue Dolphins 10/26/2025 Lisa Ferris Fall Festival Time Trial 2025
4346 Tyler Lu 45.53 10 B Min BB: 42.89 (+2.64s | 5.8%) Tac Titans 12/19/2025 2025 TAC TITANS Jingle Bells Meet
4347 Oliver Mirczak 45.53 10 B Min BB: 42.89 (+2.64s | 5.8%) The Woodlands Swim Team 01/17/2025 2025 TWST Speedo Winter Classic Invitational
4348 Luca Pisculli 45.53 9 B Min BB: 42.89 (+2.64s | 5.8%) Asphalt Green Unified Aquatics 03/07/2026 2026 MR AGUA Last Chance Invitational
4349 Brooks Dechaine 45.53 10 B Min BB: 42.89 (+2.64s | 5.8%) Swim Florida 02/07/2026 2026 GCST WINTER OPEN
4350 Grant Coburn 45.54 10 B Min BB: 42.89 (+2.65s | 5.8%) Barracuda Aquatic Club 11/14/2025 November Meet 2025

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.