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 | |
|---|---|---|---|---|---|---|---|---|---|
| 651 | Cameron Day | 48.62 | 9 | BB Min | A: 43.09 (+5.53s | 11.4%) | Mission Viejo Nadadores | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 652 | Christopher Roeder | 48.63 | 9 | BB Min | A: 43.09 (+5.54s | 11.4%) | Aspen Swim Club | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 653 | Anthony Ma | 48.63 | 9 | BB Min | A: 43.09 (+5.54s | 11.4%) | Cottonwood Heights Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 654 | Alexander Rich | 48.64 | 9 | BB Min | A: 43.09 (+5.55s | 11.4%) | Maverick Aquatics | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 655 | Dominic Allen | 48.64 | 8 | BB Min | A: 43.09 (+5.55s | 11.4%) | Crow Canyon Sharks | 05/25/2024 | 2024 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 656 | Otto Seeber | 48.65 | 8 | BB Min | A: 43.09 (+5.56s | 11.4%) | Flatiron Athletic Club | 05/16/2025 | 2025 CO NJ Ken Kelley Invite | |
| 657 | Weston Weishaar | 48.68 | 10 | BB Min | A: 43.09 (+5.59s | 11.5%) | Skagit Valley YMCA Tritons | 07/18/2025 | 2025 PN Chinook Age Group Seattle Open | |
| 658 | 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 | |
| 659 | Colin Paget | 48.69 | 8 | BB Min | A: 43.09 (+5.60s | 11.5%) | Nova of Virginia | 07/11/2024 | 2024 RAYS Summer Awards | |
| 660 | Brandon Son | 48.70 | 7 | BB Min | A: 43.09 (+5.61s | 11.5%) | Columbia River Swim Team | 06/07/2025 | 2025 OR CRST Summer Blast 2 | |
| 661 | Nolan Abel | 48.71 | 9 | BB Min | A: 43.09 (+5.62s | 11.5%) | Team Pittsburgh Elite Aquatics | 06/12/2025 | Holtrey Summer Classic | |
| 662 | Noah Olusanya | 48.71 | 8 | BB Min | A: 43.09 (+5.62s | 11.5%) | 07/10/2025 | 2025 FL Summer Age Group Championships | ||
| 663 | Jayan Naik | 48.72 | 9 | BB Min | A: 43.09 (+5.63s | 11.6%) | Capital of Texas Aquatics | 05/02/2025 | 2025 ST ASC Cinco De Mayo | |
| 664 | Mason Thaden | 48.72 | 8 | BB Min | A: 43.09 (+5.63s | 11.6%) | Rochester Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 665 | Ryan Hartmann | 48.73 | 8 | BB Min | A: 43.09 (+5.64s | 11.6%) | Lakewood Ranch Swim Associatio | 06/19/2025 | 2025 Shark Open | |
| 666 | Jack Rissman | 48.74 | 8 | BB Min | A: 43.09 (+5.65s | 11.6%) | Edina Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 667 | 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 | |
| 668 | Owen Zhuang | 48.77 | 8 | BB Min | A: 43.09 (+5.68s | 11.6%) | Santa Clara Swim Club | 07/20/2024 | Alto Last Splash Invitational | |
| 669 | Adam Jiang | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | Waterloo Swimming | 05/16/2025 | 2025 ST ASC Spring Showcase | |
| 670 | Vincent Kim | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | Hydro Aquatics Club | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 671 | Jamie Pan | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 672 | Eddie Bi | 48.81 | 8 | BB Min | A: 43.09 (+5.72s | 11.7%) | California Dolphins Swim Team | 04/12/2025 | PC BSW LCM C B BB+ Meet | |
| 673 | Orion Blue-Smith | 48.82 | 9 | BB Min | A: 43.09 (+5.73s | 11.7%) | Palo Alto Stanford Aquatics | 06/06/2025 | BAC C B A Meet | |
| 674 | Blaze Garcia | 48.83 | 9 | BB Min | A: 43.09 (+5.74s | 11.8%) | Pueblo County Swim Team | 06/19/2025 | 2025 CO Grand Junction Invitational | |
| 675 | Demian Jarmy | 48.84 | 9 | BB Min | A: 43.09 (+5.75s | 11.8%) | Pleasanton Seahawks | 05/24/2025 | 2025 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 676 | Conor Valdez | 48.84 | 8 | BB Min | A: 43.09 (+5.75s | 11.8%) | Spokane Waves Aquatic Team | 07/25/2025 | 2025 IES LC CHAMPIONSHIPS | |
| 677 | Quentyn Boerboom | 48.84 | 9 | BB Min | A: 43.09 (+5.75s | 11.8%) | Southwest Swim Club | 07/18/2025 | 2025 SD State Long Course Meet | |
| 678 | Niranjan Bharathan | 48.85 | 9 | BB Min | A: 43.09 (+5.76s | 11.8%) | Tualatin Hills Swim Club | 06/06/2025 | 2025 THSC June Invitational | |
| 679 | Leo Liao | 48.86 | 9 | BB Min | A: 43.09 (+5.77s | 11.8%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 680 | Cole King-thomas | 48.87 | 9 | BB Min | A: 43.09 (+5.78s | 11.8%) | Sonoma Sea Dragons | 06/22/2024 | NVST S LAST CHANCE JO SUMMER PLUNGE | |
| 681 | Declan Sederholm | 48.87 | 9 | BB Min | A: 43.09 (+5.78s | 11.8%) | Hilltop Aquatic Swim Team | 06/21/2025 | 2025 UT HAST RWB Invitational | |
| 682 | Chayton Zhou | 48.87 | 8 | BB Min | A: 43.09 (+5.78s | 11.8%) | Pleasanton Seahawks | 04/12/2025 | PC BSW LCM C B BB+ Meet | |
| 683 | Thomas Litton | 48.88 | 9 | BB Min | A: 43.09 (+5.79s | 11.8%) | Cavalier Aquatics/Piedmont Fam | 07/12/2024 | 2024 CCA Summer Awards | |
| 684 | Maximilian Smith | 48.88 | 7 | BB Min | A: 43.09 (+5.79s | 11.8%) | Lynchburg YMCA Swim Team | 07/12/2024 | 2024 CCA Summer Awards | |
| 685 | Nicholas Medina | 48.89 | 8 | BB Min | A: 43.09 (+5.80s | 11.9%) | Laker Swim | 06/12/2025 | 2025 RAFC Summer Solstice | |
| 686 | Zachary Everett | 48.89 | 10 | BB Min | A: 43.09 (+5.80s | 11.9%) | Seals Aquatics | 05/30/2025 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 687 | Bennett McKown | 48.93 | 7 | BB Min | A: 43.09 (+5.84s | 11.9%) | Patriot Aquatics | 05/16/2025 | 2025 PA Long Course Invite | |
| 688 | Micah Kusbel | 48.93 | 9 | BB Min | A: 43.09 (+5.84s | 11.9%) | Alamo Area Aquatic Association | 06/27/2025 | 2025 ST HPAC Long Course STX Championship | |
| 689 | Ryan Sun | 48.93 | 10 | BB Min | A: 43.09 (+5.84s | 11.9%) | Sarasota Sharks | 05/16/2025 | 2025 SYS Memorial Meet | |
| 690 | Augustus Pape | 48.94 | 10 | BB Min | A: 43.09 (+5.85s | 12.0%) | Sparks Piranhas Swim Team | 06/20/2025 | Reno Aquatic Club Gamble | |
| 691 | Gregory Rucker | 48.95 | 9 | BB Min | A: 43.09 (+5.86s | 12.0%) | Firestone Akron Swim Team | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 692 | Rain Liu | 48.96 | 9 | BB Min | A: 43.09 (+5.87s | 12.0%) | Rancho San Dieguito | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 693 | Charles Knigge | 48.96 | 9 | BB Min | A: 43.09 (+5.87s | 12.0%) | Spokane Waves Aquatic Team | 06/06/2025 | 2025 TRI CITY INVITATIONAL | |
| 694 | 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 | |
| 695 | Arick Yuan | 49.00 | 9 | BB Min | A: 43.09 (+5.91s | 12.1%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 696 | Liam Lawson | 49.02 | 9 | BB Min | A: 43.09 (+5.93s | 12.1%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 697 | Grant Zimmermann | 49.02 | 8 | BB Min | A: 43.09 (+5.93s | 12.1%) | YMCA of the Triangle Area Swim | 06/14/2024 | SwimRVA Summer Invitational | |
| 698 | Ryan Karapostoles | 49.03 | 8 | BB Min | A: 43.09 (+5.94s | 12.1%) | Swim Melbourne | 05/23/2025 | 2025 Dr Aspi Doctor Memorial Invitational | |
| 699 | Joshua Vitale | 49.04 | 9 | BB Min | A: 43.09 (+5.95s | 12.1%) | Lake Oswego Swim Club | 06/26/2025 | 2025 Howard Jones Open | |
| 700 | Abraham Carver | 49.07 | 8 | BB Min | A: 43.09 (+5.98s | 12.2%) | Saint Petersburg Aquatics | 05/16/2025 | 2025 SAINT PETE S 2nd LONG COURSE 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.