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 | |
|---|---|---|---|---|---|---|---|---|---|
| 851 | 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 | |
| 852 | 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 | |
| 853 | Zachary Lynch | 48.48 | 10 | BB Min | A: 43.09 (+5.39s | 11.1%) | Hydro Swim Club | 05/02/2026 | SwimRise IMX IMR Challenge | |
| 854 | Robert Lalji | 48.48 | 9 | BB Min | A: 43.09 (+5.39s | 11.1%) | Swim Fort Lauderdale | 05/15/2026 | 2026 Gulliver LCM Summer Classic | |
| 855 | Lucas Ding | 48.48 | 8 | BB Min | A: 43.09 (+5.39s | 11.1%) | Waterloo Swimming | 05/10/2026 | 2026 ST TXLA 10 U End Of School Splash | |
| 856 | 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 | |
| 857 | Enzo Rodrigues | 48.49 | 9 | BB Min | A: 43.09 (+5.40s | 11.1%) | Longhorn Aquatics | 04/19/2026 | 2026 ST TXLA 10 U Long Course Kick Off | |
| 858 | 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 | |
| 859 | Mo Chen | 48.50 | 9 | BB Min | A: 43.09 (+5.41s | 11.2%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 860 | Benjamin Gonen | 48.50 | 9 | BB Min | A: 43.09 (+5.41s | 11.2%) | YMCA of Austin Swim Alliance | 04/25/2026 | 2026 ST CCSS LC Unclassified | |
| 861 | Arwin Safaee | 48.51 | 10 | BB Min | A: 43.09 (+5.42s | 11.2%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 862 | Kellan Yosay | 48.52 | 9 | BB Min | A: 43.09 (+5.43s | 11.2%) | SwimRVA | 05/31/2024 | 2024 SwimRVA Success Bell | |
| 863 | 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 | |
| 864 | 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 | |
| 865 | Levi Chong | 48.54 | 8 | BB Min | A: 43.09 (+5.45s | 11.2%) | Southwest Stars Swim Club | 05/15/2026 | 2026 PA Long Course Invite | |
| 866 | River Wilkinson | 48.54 | 9 | BB Min | A: 43.09 (+5.45s | 11.2%) | North Coast Aquatics | 05/23/2026 | SI 2026 TAC CSTE All Ages NTS Meet | |
| 867 | Boone Day | 48.56 | 7 | BB Min | A: 43.09 (+5.47s | 11.3%) | Bend Swim Club | 05/08/2026 | Bend Swim Club May Invitational 2026 | |
| 868 | Matthew Chen | 48.59 | 10 | BB Min | A: 43.09 (+5.50s | 11.3%) | California Dolphins Swim Team | 05/02/2026 | Alto Spring Jam CBA | |
| 869 | 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 | |
| 870 | Jacob Chen | 48.60 | 9 | BB Min | A: 43.09 (+5.51s | 11.3%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 871 | Jonathan Greaker | 48.61 | 9 | BB Min | A: 43.09 (+5.52s | 11.4%) | Bolles School Sharks | 04/10/2026 | 2026 April Classic | |
| 872 | 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 | |
| 873 | Denis Groza | 48.62 | 10 | BB Min | A: 43.09 (+5.53s | 11.4%) | Great Wolf Swim Team | 05/08/2026 | 2026 MN STRM Spring Startup | |
| 874 | 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 | |
| 875 | Anthony Ma | 48.63 | 10 | BB Min | A: 43.09 (+5.54s | 11.4%) | Cottonwood Heights Aquatics | 06/18/2025 | 2025 UT CHAT INVITATIONAL | |
| 876 | 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 | |
| 877 | Moses Wang | 48.64 | 10 | BB Min | A: 43.09 (+5.55s | 11.4%) | Bainbridge Island Swim Club | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 878 | Finn Swarts | 48.67 | 8 | BB Min | A: 43.09 (+5.58s | 11.5%) | North Jeffco Swim Team | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 879 | 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 | |
| 880 | Colin Paget | 48.69 | 10 | BB Min | A: 43.09 (+5.60s | 11.5%) | Nova of Virginia | 07/11/2024 | 2024 RAYS Summer Awards | |
| 881 | Calder Haberer-Yamini | 48.70 | 9 | BB Min | A: 43.09 (+5.61s | 11.5%) | Tampa Y Swimming | 05/15/2026 | 2026 SAINT PETE S 2nd LONG COURSE MEET | |
| 882 | Hogan Crow | 48.70 | 9 | BB Min | A: 43.09 (+5.61s | 11.5%) | Unattached | 04/17/2026 | 2026 Shark Attack Copied | |
| 883 | Rhys Mehta | 48.70 | 9 | BB Min | A: 43.09 (+5.61s | 11.5%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 884 | 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 | |
| 885 | Nolan Abel | 48.71 | 10 | BB Min | A: 43.09 (+5.62s | 11.5%) | Team Pittsburgh Elite Aquatics | 06/12/2025 | Holtrey Summer Classic | |
| 886 | Hendrix Eldridge | 48.71 | 9 | BB Min | A: 43.09 (+5.62s | 11.5%) | Northside Aquatics | 05/21/2026 | 2026 ST NIST End Of School Sprints | |
| 887 | Noah Olusanya | 48.71 | 9 | BB Min | A: 43.09 (+5.62s | 11.5%) | 07/10/2025 | 2025 FL Summer Age Group Championships | ||
| 888 | 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 | |
| 889 | Ethan Liu | 48.72 | 9 | BB Min | A: 43.09 (+5.63s | 11.6%) | Highlands Ranch Aquatics | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 890 | 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 | |
| 891 | Conrad Postle | 48.76 | 9 | BB Min | A: 43.09 (+5.67s | 11.6%) | West Florida Lightning Aquatic | 05/01/2026 | 2026 WFLA SPRING OPEN | |
| 892 | 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 | |
| 893 | Aiden Huang | 48.80 | 10 | BB Min | A: 43.09 (+5.71s | 11.7%) | DeAnza Cupertino Aquatics | 05/16/2026 | 2026 DACA LC CBA+ | |
| 894 | Evan Zhu | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | Nitro Swimming | 05/10/2026 | 2026 ST TXLA 10 U End Of School Splash | |
| 895 | 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 | |
| 896 | Benjamin Zhou | 48.81 | 9 | BB Min | A: 43.09 (+5.72s | 11.7%) | Life Time Swim Team - Central | 05/01/2026 | 2026 ST HCA Long Course Invitational | |
| 897 | Jamie Pan | 48.81 | 10 | BB Min | A: 43.09 (+5.72s | 11.7%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 898 | 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 | |
| 899 | Patrick Keene | 48.83 | 9 | BB Min | A: 43.09 (+5.74s | 11.8%) | Univ. of Denver Hilltoppers | 04/24/2026 | 2026 CO Arena Catch Me If You Can | |
| 900 | 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 | |
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.