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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 Nathan Zhu 45.42 9 B Min BB: 42.89 (+2.53s | 5.6%) Y in Central Maryland Blue Cra 11/01/2025 2025 Bridget Vache Memorial MAC Fall Frenzy
4302 Colton Fisher 45.43 9 B Min BB: 42.89 (+2.54s | 5.6%) Quince Orchard Swim Academy 03/20/2026 2026 RMSC Spring Finale
4303 Abraham Sanchez 45.43 10 B Min BB: 42.89 (+2.54s | 5.6%) Apex Swim Club 10/25/2025 2025 MR QNS Can I Kick It Invitational
4304 Jeffrey Zhang 45.43 8 B Min BB: 42.89 (+2.54s | 5.6%) Tac Titans 05/02/2026 2026 TAC TITANS Oceanus Challenge Meet
4305 William Beaton 45.44 10 B Min BB: 42.89 (+2.55s | 5.6%) Commonwealth Swimming 03/13/2026 2026 NE INST NE Cup
4306 Matthew Sparacino 45.44 10 B Min BB: 42.89 (+2.55s | 5.6%) South Lyon Aquatics 01/31/2026 2026 Guppy Bowl
4307 Micah Brown 45.44 8 B Min BB: 42.89 (+2.55s | 5.6%) MN Flyers Swim Team 03/07/2026 2026 MN RSC 10 U State Championship
4308 Rufus Tang 45.44 10 B Min BB: 42.89 (+2.55s | 5.6%) Pacific Dragons Swim Team 03/07/2026 2026 PDST Mar Pentathlon Last Chance Approved
4309 Colin Hui 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Highlands Ranch Aquatics 11/15/2024 2024 CO TOPS Fall Invite
4310 Easton Keelan 45.45 8 B Min BB: 42.89 (+2.56s | 5.6%) Y in Central Maryland Blue Cra 12/05/2025 2025 Christmas Championships
4311 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
4312 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
4313 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
4314 Ricky Gunther 45.45 10 B Min BB: 42.89 (+2.56s | 5.6%) Gsa 10/24/2025 2025 GCY Spooktacular
4315 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
4316 Matthew DiRuzzo 45.46 9 B Min BB: 42.89 (+2.57s | 5.7%) SlipStream Aquatics 02/13/2026 2026 CO NJ Groundhog Invite
4317 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
4318 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
4319 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
4320 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
4321 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
4322 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
4323 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
4324 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
4325 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
4326 Nathan Nguyen 45.48 10 B Min BB: 42.89 (+2.59s | 5.7%) San Jose Goosemonkeys 10/25/2025 GGST Spooktacular 2025
4327 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
4328 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
4329 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
4330 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
4331 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
4332 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
4333 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
4334 Micah Ryckaert 45.49 10 B Min BB: 42.89 (+2.60s | 5.7%) Oly Swimming 12/12/2025 OLY Swimming Holiday Bowl
4335 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
4336 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
4337 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
4338 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
4339 William Halstead 45.50 10 B Min BB: 42.89 (+2.61s | 5.7%) Atlantis Aquatics 03/20/2026 2026 NE ORO TSSA Champs
4340 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
4341 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
4342 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
4343 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
4344 Arthur Cahoy 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Alto Swim Club 03/07/2026 DACA CBA Meet
4345 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
4346 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
4347 Maximiliano Botello 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Dearborn Dolphins 03/07/2026 2026 Lake Erie Regional Meet
4348 Jude Notter 45.51 9 B Min BB: 42.89 (+2.62s | 5.8%) Birmingham \\\\\\'y\\\\\\' Blue Dolphins 02/27/2026 2026 Junior Cup
4349 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
4350 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

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.