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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1951 | Bolden Rapuzzi | 49.45 | 9 | B Min | BB: 49.29 (+0.16s | 0.3%) | Highlands Ranch Aquatics | 06/26/2026 | 2026 CO Zone 2 District Meet DU | |
| 1952 | Adolfo Viloria Amundaray | 49.46 | 9 | B Min | BB: 49.29 (+0.17s | 0.3%) | Frederick Area Swim Team | 07/17/2026 | 2026 MD Long Course Last Chance Meet | |
| 1953 | Anderson Miller | 49.46 | 8 | B Min | BB: 49.29 (+0.17s | 0.3%) | YMCA of the Triangle Area Swim | 04/24/2026 | 2026 RSA Warm Up To LC Copied Copied | |
| 1954 | Jacob Lambert | 49.47 | 8 | B Min | BB: 49.29 (+0.18s | 0.4%) | Northern KY Clippers | 06/05/2026 | 25th Annual CLPR David Webb Meet | |
| 1955 | Jude Nystrom | 49.47 | 9 | B Min | BB: 49.29 (+0.18s | 0.4%) | T2 Aquatics | 05/22/2026 | 2026 T2 Aquatics Norris Foundation LC Meet | |
| 1956 | Mason Park | 49.47 | 9 | B Min | BB: 49.29 (+0.18s | 0.4%) | Olympic Cascade Aquatics | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 1957 | Henry Drotleff | 49.49 | 8 | B Min | BB: 49.29 (+0.20s | 0.4%) | Northern KY Clippers | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 1958 | Ratu Bukarau | 49.50 | 8 | B Min | BB: 49.29 (+0.21s | 0.4%) | Stingrays Swim Team | 06/05/2026 | HNVR Storm Surge 2026 | |
| 1959 | Jackson Hiser | 49.50 | 8 | B Min | BB: 49.29 (+0.21s | 0.4%) | Dolphin Club | 04/18/2026 | 2026 SwimRVA Carnation Clash | |
| 1960 | Brendan Gao | 49.50 | 10 | B Min | BB: 49.29 (+0.21s | 0.4%) | Bellevue Club Swim Team | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 1961 | Samuel Hoftiezer | 49.50 | 9 | B Min | BB: 49.29 (+0.21s | 0.4%) | Watertown Area Swim Club | 06/19/2026 | 2026 SD Aberdeen Summer High Point Swim Meet | |
| 1962 | Barrett Zubke | 49.51 | 9 | B Min | BB: 49.29 (+0.22s | 0.4%) | Sarasota Sharks | 06/19/2025 | 2025 Shark Open | |
| 1963 | Youcheng Yin | 49.51 | 9 | B Min | BB: 49.29 (+0.22s | 0.4%) | Arctic Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 1964 | Zachary DeLozier | 49.52 | 9 | B Min | BB: 49.29 (+0.23s | 0.5%) | Lake Oswego Swim Club | 04/25/2026 | GACC Spring Invitational | |
| 1965 | Marcelo Valdez Salda'a | 49.53 | 7 | B Min | BB: 49.29 (+0.24s | 0.5%) | Municipio DE San Pedro | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 1966 | Lane Markham | 49.54 | 10 | B Min | BB: 49.29 (+0.25s | 0.5%) | Minnetonka Swim Club | 05/15/2026 | 2026 MN HURR LC Spring Opener | |
| 1967 | Srii Bezawada | 49.54 | 10 | B Min | BB: 49.29 (+0.25s | 0.5%) | Front Range Barracudas | 05/29/2026 | 2026 CO Barracuda Summer Sizzler Invite | |
| 1968 | Asher Kim | 49.54 | 10 | B Min | BB: 49.29 (+0.25s | 0.5%) | Huntsville Swim Association | 05/16/2026 | NAC LC May Classic | |
| 1969 | Isaiah Fadillah | 49.54 | 10 | B Min | BB: 49.29 (+0.25s | 0.5%) | California Dolphins Swim Team | 05/02/2026 | Alto Spring Jam CBA | |
| 1970 | Ives Peredo | 49.55 | 9 | B Min | BB: 49.29 (+0.26s | 0.5%) | Nation\\\\\\'s Capital Swim Club | 06/05/2026 | HNVR Storm Surge 2026 | |
| 1971 | Shayan Sarkar | 49.55 | 10 | B Min | BB: 49.29 (+0.26s | 0.5%) | Diablo Aquatics | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 1972 | Jack Webber | 49.56 | 9 | B Min | BB: 49.29 (+0.27s | 0.5%) | Cincinnati Aquatic Club | 05/01/2026 | CLPR 3rd Annual Northern KY Derby | |
| 1973 | George Morris | 49.56 | 9 | B Min | BB: 49.29 (+0.27s | 0.5%) | The Atlantic Club | 05/02/2026 | 2026 STAC Thank You Mom | |
| 1974 | Lucas Li | 49.57 | 8 | B Min | BB: 49.29 (+0.28s | 0.6%) | Milpitas Aquatic Club | 04/19/2026 | MAC April 19 LCM Block Party | |
| 1975 | Luke Atanasov | 49.57 | 9 | B Min | BB: 49.29 (+0.28s | 0.6%) | Tualatin Hills Swim Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 1976 | Lazar Mercado | 49.58 | 10 | B Min | BB: 49.29 (+0.29s | 0.6%) | Northern KY Clippers | 06/05/2026 | 25th Annual CLPR David Webb Meet | |
| 1977 | Eli Kerley | 49.58 | 10 | B Min | BB: 49.29 (+0.29s | 0.6%) | Treasure Coast Swimming | 05/02/2026 | TCSC Go For The Gold Invitational | |
| 1978 | Cosmo McGrath | 49.58 | 10 | B Min | BB: 49.29 (+0.29s | 0.6%) | Bellingham Bay Swim Team | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 1979 | Adhrit Dixit | 49.59 | 10 | B Min | BB: 49.29 (+0.30s | 0.6%) | Edina Swim Club | 07/17/2026 | 2026 MN TUNA LC MRC | |
| 1980 | Samuel Moyer | 49.59 | 10 | B Min | BB: 49.29 (+0.30s | 0.6%) | Smac | 04/18/2026 | 2026 SwimRVA Carnation Clash | |
| 1981 | Yogesh Kumar | 49.60 | 9 | B Min | BB: 49.29 (+0.31s | 0.6%) | YMCA of Central Massachusetts | 04/26/2026 | 2026 NE RIAC Quahog Cup | |
| 1982 | Jaden Feng | 49.60 | 8 | B Min | BB: 49.29 (+0.31s | 0.6%) | Olympic Cascade Aquatics | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 1983 | Jackson Ezell | 49.60 | 8 | B Min | BB: 49.29 (+0.31s | 0.6%) | Highbridge Aquatics | 06/26/2026 | 2026 Colonel Summer Classic Copied | |
| 1984 | Khalil Khadzhy Abdulkader | 49.61 | 10 | B Min | BB: 49.29 (+0.32s | 0.6%) | Planet Swim Aquatics | 07/24/2026 | 2026 Area 1 LCM Championships | |
| 1985 | Jack Griego | 49.62 | 9 | B Min | BB: 49.29 (+0.33s | 0.7%) | Waterloo Swimming | 06/22/2025 | 2025 ST WLOO LC Last Chance | |
| 1986 | August Speziale | 49.62 | 10 | B Min | BB: 49.29 (+0.33s | 0.7%) | Great Lakes Sailfish Swimming | 06/12/2025 | Holtrey Summer Classic | |
| 1987 | Nikshay Gupta | 49.62 | 10 | B Min | BB: 49.29 (+0.33s | 0.7%) | Mecklenburg Swim Association | 04/25/2026 | 2026 MSA April LC Meet | |
| 1988 | Jace Gordon | 49.62 | 9 | B Min | BB: 49.29 (+0.33s | 0.7%) | Los Gatos Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 1989 | Reid Siemens | 49.62 | 9 | B Min | BB: 49.29 (+0.33s | 0.7%) | Hurricanes Swim Team | 06/19/2026 | 2026 SD Aberdeen Summer High Point Swim Meet | |
| 1990 | Emmett Raj | 49.63 | 10 | B Min | BB: 49.29 (+0.34s | 0.7%) | York Swim Club of Northern Vir | 05/01/2026 | Speedo Spring Splash | |
| 1991 | Ishaan Talluri | 49.63 | 10 | B Min | BB: 49.29 (+0.34s | 0.7%) | Wave Aquatics | 07/09/2026 | 2026 PN Chinook Seattle Age Group Open Appro | |
| 1992 | Micah Parris | 49.63 | 9 | B Min | BB: 49.29 (+0.34s | 0.7%) | Sunnyvale Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 1993 | Emmett Kirsch | 49.63 | 9 | B Min | BB: 49.29 (+0.34s | 0.7%) | Rec-Plex Sharks | 05/29/2026 | 2026 Meet Me In St Louis Invite | |
| 1994 | Gunnar Torres | 49.64 | 10 | B Min | BB: 49.29 (+0.35s | 0.7%) | Gold\\\\\\'s Aquatics Club (Camas) | 08/01/2026 | 2026 GACC End Of Season | |
| 1995 | Edison Cois | 49.64 | 10 | B Min | BB: 49.29 (+0.35s | 0.7%) | Life Time Oregon Swim Team | 06/05/2026 | 2026 CST Summer Invitational | |
| 1996 | Edmund Lin | 49.64 | 10 | B Min | BB: 49.29 (+0.35s | 0.7%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 1997 | Alexander Linck | 49.64 | 10 | B Min | BB: 49.29 (+0.35s | 0.7%) | Parkway-Rockwood Gateway Swim | 05/01/2026 | John Traube Memorial 2026 | |
| 1998 | Knox Monsivais | 49.65 | 10 | B Min | BB: 49.29 (+0.36s | 0.7%) | Lehi Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 1999 | Jet Corrigan | 49.66 | 8 | B Min | BB: 49.29 (+0.37s | 0.7%) | Occoquan Swimming | 05/01/2026 | Speedo Spring Splash | |
| 2000 | Oscar Zheng | 49.66 | 10 | B Min | BB: 49.29 (+0.37s | 0.7%) | South Shore YMCA Strypers | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC 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.