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 | |
|---|---|---|---|---|---|---|---|---|---|
| 601 | Conor Valdez | 48.84 | 9 | BB Min | A: 43.09 (+5.75s | 11.8%) | Spokane Waves Aquatic Team | 07/25/2025 | 2025 IES LC CHAMPIONSHIPS | |
| 602 | Quentyn Boerboom | 48.84 | 10 | BB Min | A: 43.09 (+5.75s | 11.8%) | Southwest Swim Club | 07/18/2025 | 2025 SD State Long Course Meet | |
| 603 | Niranjan Bharathan | 48.85 | 10 | BB Min | A: 43.09 (+5.76s | 11.8%) | Tualatin Hills Swim Club | 06/06/2025 | 2025 THSC June Invitational | |
| 604 | Leo Liao | 48.86 | 10 | BB Min | A: 43.09 (+5.77s | 11.8%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 605 | Cole King-thomas | 48.87 | 10 | BB Min | A: 43.09 (+5.78s | 11.8%) | Sonoma Sea Dragons | 06/22/2024 | NVST S LAST CHANCE JO SUMMER PLUNGE | |
| 606 | Declan Sederholm | 48.87 | 10 | BB Min | A: 43.09 (+5.78s | 11.8%) | Hilltop Aquatic Swim Team | 06/21/2025 | 2025 UT HAST RWB Invitational | |
| 607 | Chayton Zhou | 48.87 | 9 | BB Min | A: 43.09 (+5.78s | 11.8%) | Pleasanton Seahawks | 04/12/2025 | PC BSW LCM C B BB+ Meet | |
| 608 | Thomas Litton | 48.88 | 10 | BB Min | A: 43.09 (+5.79s | 11.8%) | Cavalier Aquatics/Piedmont Fam | 07/12/2024 | 2024 CCA Summer Awards | |
| 609 | Maximilian Smith | 48.88 | 9 | BB Min | A: 43.09 (+5.79s | 11.8%) | Lynchburg YMCA Swim Team | 07/12/2024 | 2024 CCA Summer Awards | |
| 610 | Nicholas Medina | 48.89 | 9 | BB Min | A: 43.09 (+5.80s | 11.9%) | Laker Swim | 06/12/2025 | 2025 RAFC Summer Solstice | |
| 611 | Micah Kusbel | 48.93 | 10 | BB Min | A: 43.09 (+5.84s | 11.9%) | Alamo Area Aquatic Association | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 612 | Bennett McKown | 48.93 | 8 | BB Min | A: 43.09 (+5.84s | 11.9%) | Patriot Aquatics | 05/16/2025 | 2025 PA Long Course Invite | |
| 613 | Gregory Rucker | 48.95 | 10 | BB Min | A: 43.09 (+5.86s | 12.0%) | Firestone Akron Swim Team | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 614 | Rain Liu | 48.96 | 10 | BB Min | A: 43.09 (+5.87s | 12.0%) | Rancho San Dieguito | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 615 | Charles Knigge | 48.96 | 10 | BB Min | A: 43.09 (+5.87s | 12.0%) | Spokane Waves Aquatic Team | 06/06/2025 | 2025 TRI CITY INVITATIONAL | |
| 616 | Bradley Royce | 48.98 | 9 | BB Min | A: 43.09 (+5.89s | 12.0%) | Highlands Ranch Aquatics | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 617 | Arick Yuan | 49.00 | 10 | BB Min | A: 43.09 (+5.91s | 12.1%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 618 | Liam Lawson | 49.02 | 10 | BB Min | A: 43.09 (+5.93s | 12.1%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 619 | Grant Zimmermann | 49.02 | 10 | BB Min | A: 43.09 (+5.93s | 12.1%) | YMCA of the Triangle Area Swim | 06/14/2024 | SwimRVA Summer Invitational | |
| 620 | Ryan Karapostoles | 49.03 | 9 | BB Min | A: 43.09 (+5.94s | 12.1%) | Swim Melbourne | 05/23/2025 | 2025 Dr Aspi Doctor Memorial Invitational | |
| 621 | Joshua Vitale | 49.04 | 10 | BB Min | A: 43.09 (+5.95s | 12.1%) | Lake Oswego Swim Club | 06/26/2025 | 2025 Howard Jones Open | |
| 622 | Abraham Carver | 49.07 | 9 | BB Min | A: 43.09 (+5.98s | 12.2%) | Saint Petersburg Aquatics | 05/16/2025 | 2025 SAINT PETE S 2nd LONG COURSE MEET | |
| 623 | Henry Fransen Weinberger | 49.07 | 8 | BB Min | A: 43.09 (+5.98s | 12.2%) | Minnetonka Swim Club | 06/26/2025 | 2025 MN AQJT Aquajets Summer Spectacular | |
| 624 | Conrad Postle | 49.08 | 9 | BB Min | A: 43.09 (+5.99s | 12.2%) | West Florida Lightning Aquatic | 05/16/2025 | 2025 SAINT PETE S 2nd LONG COURSE MEET | |
| 625 | Isaac Marcuson | 49.08 | 10 | BB Min | A: 43.09 (+5.99s | 12.2%) | Aspire Aquatics of Colorado | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 626 | Michel Opp | 49.08 | 10 | BB Min | A: 43.09 (+5.99s | 12.2%) | Sporting Jax Aquatic Club | 05/03/2025 | SwimRise IMX IMR Challenge | |
| 627 | Mateo Sison | 49.10 | 10 | BB Min | A: 43.09 (+6.01s | 12.2%) | San Ramon Valley Aquatics | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | |
| 628 | Levi Mccloy | 49.15 | 10 | BB Min | A: 43.09 (+6.06s | 12.3%) | High Performance Aquatic Club | 04/26/2025 | 2025 HPAC Banana Slug Beach Bash | |
| 629 | Chezeq Morgos | 49.15 | 10 | BB Min | A: 43.09 (+6.06s | 12.3%) | Sea Dragon Aquatics | 05/03/2025 | 2025 Sea Dragon May Open | |
| 630 | Yunus Mukhamadieva | 49.16 | 10 | BB Min | A: 43.09 (+6.07s | 12.3%) | Brentwood Seawolves | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | |
| 631 | Roman Tsikalov | 49.17 | 10 | BB Min | A: 43.09 (+6.08s | 12.4%) | Otter Swim Club | 06/06/2025 | 2025 DACA LC CBA+ Meet | |
| 632 | Maximus Wan | 49.18 | 10 | BB Min | A: 43.09 (+6.09s | 12.4%) | Highlander Aquatic Club | 05/16/2025 | 2025 PA Long Course Invite | |
| 633 | Alonso Andrade | 49.19 | 10 | BB Min | A: 43.09 (+6.10s | 12.4%) | EL Paso Border Land Swim Team | 06/28/2024 | 2024 EPAP Jack White Classic | |
| 634 | Alexander Escalona | 49.21 | 10 | BB Min | A: 43.09 (+6.12s | 12.4%) | Great Illinois Swimmers | 08/06/2025 | 2025 Summer Elite Showcase | |
| 635 | Caleb McGovern | 49.23 | 10 | BB Min | A: 43.09 (+6.14s | 12.5%) | Portland Aquatic Club | 11/14/2025 | GACC PAC 12 U Sprint Dual | |
| 636 | Jose Perez | 49.24 | 10 | BB Min | A: 43.09 (+6.15s | 12.5%) | Lincoln City Swim Club | 03/07/2026 | Valley Coast Swim League 2026 | |
| 637 | Everett Philipps | 49.25 | 10 | BB Min | A: 43.09 (+6.16s | 12.5%) | Issaquah Swim Team | 07/18/2025 | 2025 PN Chinook Age Group Seattle Open | |
| 638 | Emmett Curry | 49.26 | 10 | BB Min | A: 43.09 (+6.17s | 12.5%) | Seattle Metropolitan Aquatic C | 05/16/2025 | 2025 PN IST Sockeye Springtime Madness | |
| 639 | Thomas Cooke | 49.27 | 9 | BB Min | A: 43.09 (+6.18s | 12.5%) | Aptos Cabrillo Swim Club | 06/27/2025 | Valley Splash | |
| 640 | Ryker Mahowald | 49.27 | 10 | BB Min | A: 43.09 (+6.18s | 12.5%) | Vermillion Area Swim Team | 06/20/2025 | VAST SPLASH | |
| 641 | Sebastian Hartline | 49.28 | 10 | BB Min | A: 43.09 (+6.19s | 12.6%) | Multnomah Athletic Club | 05/02/2025 | 2025 THSC Spring Invitational | |
| 642 | William Johnson | 49.31 | 9 | B Min | BB: 49.29 (+0.02s | 0.0%) | Swim Florida | 06/21/2025 | 2025 T2 June Saturday Showcase | |
| 643 | Wilder Toohey | 49.33 | 10 | B Min | BB: 49.29 (+0.04s | 0.1%) | La Grande Swim Club | 07/05/2025 | Pendleton Open 2025 | |
| 644 | Blake Davis | 49.42 | 8 | B Min | BB: 49.29 (+0.13s | 0.3%) | Bolles School Sharks | 07/25/2025 | 2025 Area 1 LCM Championships | |
| 645 | Jacob Gamio | 49.42 | 9 | B Min | BB: 49.29 (+0.13s | 0.3%) | Alamo Area Aquatic Association | 05/16/2025 | 2025 ST AAAA NS Salute To The Troops | |
| 646 | Theodore Gerber | 49.42 | 10 | B Min | BB: 49.29 (+0.13s | 0.3%) | Wave Aquatics | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 647 | Shane Kirk | 49.45 | 8 | B Min | BB: 49.29 (+0.16s | 0.3%) | Bolles School Sharks | 07/25/2025 | 2025 Area 1 LCM Championships | |
| 648 | Luke Cheng | 49.45 | 10 | B Min | BB: 49.29 (+0.16s | 0.3%) | Otter Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 649 | Milo Gordon | 49.45 | 8 | B Min | BB: 49.29 (+0.16s | 0.3%) | Flatiron Athletic Club | 06/06/2025 | 2025 CO NJ Summer Solstice Invitational | |
| 650 | Benjamin Gonen | 49.46 | 9 | B Min | BB: 49.29 (+0.17s | 0.3%) | YMCA of Austin Swim Alliance | 05/16/2025 | 2025 ST ASC Spring Showcase | |
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.