USA Boys 10 & under - 50 M 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 551 | Miguel Ramirez | 48.34 | 9 | BB Min | A: 43.09 (+5.25s | 10.9%) | Blue Wave Swimming | 06/06/2025 | 2025 TAMPA BAY SWIM CLASSIC | |
| 552 | Moss Fano | 48.36 | 9 | BB Min | A: 43.09 (+5.27s | 10.9%) | Team Greenville | 06/12/2025 | Holtrey Summer Classic | |
| 553 | Van Yetter | 48.37 | 10 | BB Min | A: 43.09 (+5.28s | 10.9%) | T2 Aquatics | 04/11/2025 | 2025 GCST Spring Invite | |
| 554 | Anton Todd | 48.37 | 10 | BB Min | A: 43.09 (+5.28s | 10.9%) | Pierre Swim Team | 07/18/2025 | 2025 SD State Long Course Meet | |
| 555 | Arjun Jois | 48.38 | 8 | BB Min | A: 43.09 (+5.29s | 10.9%) | Houston Bridge Bats | 06/14/2025 | CCLR CEM Summer Beach Bash LCM Unclassified | |
| 556 | Lucas Shamshurin | 48.41 | 10 | BB Min | A: 43.09 (+5.32s | 11.0%) | Bellevue Club Swim Team | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 557 | Neo Perera | 48.42 | 10 | BB Min | A: 43.09 (+5.33s | 11.0%) | Los Altos Mountain View Aquati | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 558 | Aidan Woods | 48.44 | 10 | BB Min | A: 43.09 (+5.35s | 11.0%) | Fort Collins Area Swim Team | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 559 | Rojan Kundey | 48.44 | 10 | BB Min | A: 43.09 (+5.35s | 11.0%) | Monocacy Aquatic Club | 06/14/2024 | 2024 Winchester Long Course Inviational | |
| 560 | Leo Gazzard | 48.44 | 9 | BB Min | A: 43.09 (+5.35s | 11.0%) | Bellevue Club Swim Team | 05/02/2025 | 2025 PN BC May Flowers | |
| 561 | Ian Chan | 48.45 | 10 | BB Min | A: 43.09 (+5.36s | 11.1%) | Trident Aquatic Club | 08/06/2025 | 2025 Summer Elite Showcase | |
| 562 | Hudson Nolan | 48.46 | 10 | BB Min | A: 43.09 (+5.37s | 11.1%) | San Antonio Wave | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 563 | Kyle Whitley | 48.46 | 10 | BB Min | A: 43.09 (+5.37s | 11.1%) | Fast Falcons | 06/20/2025 | 2025 FAST Independence Invitational | |
| 564 | Lawson Kroon | 48.47 | 9 | BB Min | A: 43.09 (+5.38s | 11.1%) | Pierre Swim Team | 06/28/2025 | 2025 SD Summer Starter | |
| 565 | Nicolas Bastida Gonzalez | 48.47 | 10 | BB Min | A: 43.09 (+5.38s | 11.1%) | Titanes de Tym | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 566 | Max Ong | 48.48 | 10 | BB Min | A: 43.09 (+5.39s | 11.1%) | Pacific Swim | 07/11/2025 | 2025 SI JBST All Ages NTS Meet | |
| 567 | Camden Kern | 48.48 | 10 | BB Min | A: 43.09 (+5.39s | 11.1%) | Cavalier Aquatics/Piedmont Fam | 07/12/2024 | 2024 CCA Summer Awards | |
| 568 | Silas Sebera | 48.49 | 9 | BB Min | A: 43.09 (+5.40s | 11.1%) | Nova of Virginia | 06/22/2024 | 2024 WAC Summer Sizzle Meet | |
| 569 | Brendan Moore | 48.50 | 10 | BB Min | A: 43.09 (+5.41s | 11.2%) | Perry Aquatic Club | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 570 | Arwin Safaee | 48.51 | 10 | BB Min | A: 43.09 (+5.42s | 11.2%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 571 | Kellan Yosay | 48.52 | 9 | BB Min | A: 43.09 (+5.43s | 11.2%) | SwimRVA | 05/31/2024 | 2024 SwimRVA Success Bell | |
| 572 | Asher Knapp | 48.52 | 10 | BB Min | A: 43.09 (+5.43s | 11.2%) | Tide Swimming | 06/07/2024 | 2024 TIDE Swimming Schools Out Classic | |
| 573 | Derek Nichols | 48.53 | 9 | BB Min | A: 43.09 (+5.44s | 11.2%) | Alamo Area Aquatic Association | 07/25/2025 | 2025 ST AAAA NE LC End Of Season Splash | |
| 574 | Quinn Cobb | 48.54 | 9 | BB Min | A: 43.09 (+5.45s | 11.2%) | Foxjets Swim Team | 07/18/2025 | 2025 MN STRM Minnesota Regional Championship | |
| 575 | James Ballard | 48.59 | 10 | BB Min | A: 43.09 (+5.50s | 11.3%) | Rochester Swim Club | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
| 576 | Jacob Chen | 48.60 | 9 | BB Min | A: 43.09 (+5.51s | 11.3%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 577 | Demian Jarmy | 48.60 | 10 | BB Min | A: 43.09 (+5.51s | 11.3%) | Pleasanton Seahawks | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 578 | Tang Zheng | 48.61 | 9 | BB Min | A: 43.09 (+5.52s | 11.4%) | Clearwater Aquatic Team | 07/04/2025 | 2025 SPA S SEMINOLE SUNRISE LANES SWIM MEET | |
| 579 | Cameron Day | 48.62 | 10 | BB Min | A: 43.09 (+5.53s | 11.4%) | Mission Viejo Nadadores | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 580 | Christopher Roeder | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Aspen Swim Club | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 581 | Anthony Ma | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Cottonwood Heights Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 582 | Alexander Rich | 48.64 | 10 | BB Min | A: 43.09 (+5.55s | 11.4%) | Maverick Aquatics | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 583 | Otto Seeber | 48.65 | 9 | BB Min | A: 43.09 (+5.56s | 11.4%) | Flatiron Athletic Club | 05/16/2025 | 2025 CO NJ Ken Kelley Invite | |
| 584 | Charles Jodrey | 48.69 | 10 | BB Min | A: 43.09 (+5.60s | 11.5%) | Mercy HealthPlex Sea Wolves | 08/06/2025 | 2025 Summer Elite Showcase | |
| 585 | Colin Paget | 48.69 | 10 | BB Min | A: 43.09 (+5.60s | 11.5%) | Nova of Virginia | 07/11/2024 | 2024 RAYS Summer Awards | |
| 586 | Brandon Son | 48.70 | 8 | BB Min | A: 43.09 (+5.61s | 11.5%) | Columbia River Swim Team | 06/07/2025 | 2025 OR CRST Summer Blast 2 | |
| 587 | Nolan Abel | 48.71 | 10 | BB Min | A: 43.09 (+5.62s | 11.5%) | Team Pittsburgh Elite Aquatics | 06/12/2025 | Holtrey Summer Classic | |
| 588 | Noah Olusanya | 48.71 | 9 | BB Min | A: 43.09 (+5.62s | 11.5%) | 07/10/2025 | 2025 FL Summer Age Group Championships | ||
| 589 | Jayan Naik | 48.72 | 10 | BB Min | A: 43.09 (+5.63s | 11.6%) | Capital of Texas Aquatics | 05/02/2025 | 2025 ST ASC Cinco De Mayo | |
| 590 | Mason Thaden | 48.72 | 9 | BB Min | A: 43.09 (+5.63s | 11.6%) | Rochester Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 591 | Ryan Hartmann | 48.73 | 9 | BB Min | A: 43.09 (+5.64s | 11.6%) | Lakewood Ranch Swim Associatio | 06/19/2025 | 2025 Shark Open | |
| 592 | Jack Rissman | 48.74 | 9 | BB Min | A: 43.09 (+5.65s | 11.6%) | Edina Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 593 | Easton Yu | 48.75 | 9 | BB Min | A: 43.09 (+5.66s | 11.6%) | Longhorn Aquatics | 05/04/2025 | 2025 ST TXLA 10 U End Of School Splash | |
| 594 | Owen Zhuang | 48.77 | 10 | BB Min | A: 43.09 (+5.68s | 11.6%) | Santa Clara Swim Club | 07/20/2024 | Alto Last Splash Invitational | |
| 595 | Adam Jiang | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Waterloo Swimming | 05/16/2025 | 2025 ST ASC Spring Showcase | |
| 596 | Vincent Kim | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Hydro Aquatics Club | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 597 | Jamie Pan | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 598 | Eddie Bi | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | California Dolphins Swim Team | 04/12/2025 | PC BSW LCM C B BB+ Meet | |
| 599 | Orion Blue-Smith | 48.82 | 10 | BB Min | A: 43.09 (+5.73s | 11.7%) | Palo Alto Stanford Aquatics | 06/06/2025 | BAC C B A Meet | |
| 600 | Blaze Garcia | 48.83 | 10 | BB Min | A: 43.09 (+5.74s | 11.8%) | Pueblo County Swim Team | 06/19/2025 | 2025 CO Grand Junction Invitational | |
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.