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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2151 | Calvin Smith | 50.35 | 8 | B Min | BB: 49.29 (+1.06s | 2.1%) | Tac Titans | 07/24/2026 | 2026 TAC TITANS Closeout Meet | |
| 2152 | Tanner Roer | 50.35 | 10 | B Min | BB: 49.29 (+1.06s | 2.1%) | Rebel Aquatic Club | 06/20/2026 | 2026 Hot Summer Nights | |
| 2153 | Michael Liu | 50.35 | 9 | B Min | BB: 49.29 (+1.06s | 2.1%) | Mei\\\\\\'s Typhoons Swimming Club | 05/15/2026 | 2026 NE YNS May Specialty Meet | |
| 2154 | Peyton Willey | 50.37 | 9 | B Min | BB: 49.29 (+1.08s | 2.1%) | Seahawk Aquatics | 06/13/2026 | 2026 CAC Schools Out For Summer LCM Swim Meet | |
| 2155 | Cameron Watrous | 50.37 | 9 | B Min | BB: 49.29 (+1.08s | 2.1%) | Bellevue Club Swim Team | 05/28/2026 | 2026 IE VS Apple Capital | |
| 2156 | William Gilmer | 50.38 | 9 | B Min | BB: 49.29 (+1.09s | 2.2%) | Aquatic Team Of Mecklenburg | 04/17/2026 | April 17 ATOM Friday Night Lights | |
| 2157 | Gabriel Saldanha | 50.38 | 9 | B Min | BB: 49.29 (+1.09s | 2.2%) | Wasatch Front Fish Market | 08/01/2025 | 2025 LC Beehive Finale | |
| 2158 | Luka Haberle | 50.39 | 10 | B: 44.49 (+5.90s | 11.7%) | Mecklenburg Swim Association | 06/20/2026 | 2026 NCS QCD Long Course Invite | ||
| 2159 | David Peterson | 50.40 | 10 | B Min | BB: 49.29 (+1.11s | 2.2%) | Brookings Swim Club | 05/30/2026 | 2026 SD YST Summer Invite | |
| 2160 | Greyson Bobev | 50.40 | 9 | B Min | BB: 49.29 (+1.11s | 2.2%) | The Berkeley Barracudas | 06/06/2025 | 2025 TAMPA BAY SWIM CLASSIC | |
| 2161 | Fadil Halilovic | 50.41 | 7 | B Min | BB: 49.29 (+1.12s | 2.2%) | NJ Sea Dragons | 05/30/2026 | 2026 HACY Summer Solstice | |
| 2162 | Nathaniel Liparini | 50.42 | 9 | B Min | BB: 49.29 (+1.13s | 2.2%) | Swim Melbourne | 05/22/2026 | 2026 Dr Aspi Doctor Memorial Swim Invite | |
| 2163 | Daniel Rysdam | 50.42 | 10 | B Min | BB: 49.29 (+1.13s | 2.2%) | Atlantis Swimming Federation | 07/17/2026 | 2026 MN MTKA Minnesota Regional Championship | |
| 2164 | William Lewis | 50.42 | 9 | B Min | BB: 49.29 (+1.13s | 2.2%) | Sporting Jax Aquatic Club | 05/02/2026 | SwimRise IMX IMR Challenge | |
| 2165 | Ahaan Iragavarapu | 50.42 | 10 | B Min | BB: 49.29 (+1.13s | 2.2%) | Pro Swimming | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 2166 | Levi Velo | 50.42 | 10 | B Min | BB: 49.29 (+1.13s | 2.2%) | Rattlers Swim Club | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | |
| 2167 | Jack Fowler | 50.43 | 9 | B Min | BB: 49.29 (+1.14s | 2.3%) | Westerly-Pawcatuck Y Dolphins | 05/16/2026 | 2026 NE KCY Invitational | |
| 2168 | Alexander Carter | 50.43 | 8 | B Min | BB: 49.29 (+1.14s | 2.3%) | Ensworth Aquatics | 05/15/2026 | 2026 Officially Summer Invitational | |
| 2169 | Aleksander Rapoport | 50.44 | 8 | B Min | BB: 49.29 (+1.15s | 2.3%) | Swim Coral Springs | 06/26/2026 | 2026 Michael Lohberg Invitational | |
| 2170 | Lennox Thomas | 50.44 | 9 | B Min | BB: 49.29 (+1.15s | 2.3%) | United Swim Club | 06/26/2026 | ATAC Long Course Invitational | |
| 2171 | Gavin Liu | 50.44 | 9 | B Min | BB: 49.29 (+1.15s | 2.3%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 2172 | Brant Davis | 50.44 | 8 | B Min | BB: 49.29 (+1.15s | 2.3%) | Pueblo County Swim Team | 06/05/2026 | 2026 CO NJ Summer Solstice Invite | |
| 2173 | Coen Martin | 50.45 | 9 | B Min | BB: 49.29 (+1.16s | 2.3%) | SwimMAC Carolina | 07/24/2026 | 2026 NC SwimMAC LC Summer Sun Sational | |
| 2174 | Michael Du | 50.45 | 10 | B Min | BB: 49.29 (+1.16s | 2.3%) | Palo Alto Stanford Aquatics | 06/26/2026 | SUNN Silicon Valley CBA+ LCM | |
| 2175 | Reef Gal | 50.46 | 8 | B Min | BB: 49.29 (+1.17s | 2.3%) | Charles River Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 2176 | Tristan Hou | 50.46 | 10 | B Min | BB: 49.29 (+1.17s | 2.3%) | Scarlet Aquatics | 05/30/2026 | 2026 Scarlet Heat Madness | |
| 2177 | Haolin Chen | 50.46 | 10 | B Min | BB: 49.29 (+1.17s | 2.3%) | Pacific Dragons Swim Team | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 2178 | Lucas Heine | 50.47 | 9 | B Min | BB: 49.29 (+1.18s | 2.3%) | Foxjets Swim Team | 07/17/2026 | 2026 MN MAN Minnesota Regional Championship | |
| 2179 | Felix Lising | 50.47 | 9 | B Min | BB: 49.29 (+1.18s | 2.3%) | Princeton Piranhas Swim Team | 05/15/2026 | 2026 PTAC Tiger Challenge | |
| 2180 | Demid Vorobev | 50.48 | 10 | B Min | BB: 49.29 (+1.19s | 2.4%) | California Dolphins Swim Team | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 2181 | James Xiao | 50.49 | 9 | B Min | BB: 49.29 (+1.20s | 2.4%) | Otter Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 2182 | Wesley Lotano | 50.49 | 9 | B Min | BB: 49.29 (+1.20s | 2.4%) | Jupiter Dragons Swim Team | 06/13/2026 | 2026 TCA Aaron Vaughn Memorial | |
| 2183 | Jasper Yan | 50.49 | 8 | B Min | BB: 49.29 (+1.20s | 2.4%) | California Dolphins Swim Team | 04/25/2026 | San Ramon Valley Aquatics Long Course C B BB+ | |
| 2184 | Xavier Anderson | 50.50 | 9 | B Min | BB: 49.29 (+1.21s | 2.4%) | Albany Aquatic Association | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 2185 | Liam Chen | 50.50 | 10 | B Min | BB: 49.29 (+1.21s | 2.4%) | Flying Fish Swim Club | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | |
| 2186 | Elliott Segerson | 50.51 | 9 | B Min | BB: 49.29 (+1.22s | 2.4%) | Columbia Aquatics Association | 04/17/2026 | 2026 CAC Spring Swimming To The 80's LCM Sw | |
| 2187 | Dhyan Deepak | 50.51 | 8 | B Min | BB: 49.29 (+1.22s | 2.4%) | Unattached | 06/19/2026 | 2026 MultiCultural Zones | |
| 2188 | Blake Beaver | 50.51 | 9 | B Min | BB: 49.29 (+1.22s | 2.4%) | Rutherford County Swim Team | 06/26/2026 | Sharks Aquatic Club Last Chance Qualifier | |
| 2189 | Nathaniel Kunzi | 50.51 | 10 | B Min | BB: 49.29 (+1.22s | 2.4%) | Swim Melbourne | 06/13/2026 | 2026 TCA Aaron Vaughn Memorial | |
| 2190 | Mark Ilin | 50.52 | 10 | B Min | BB: 49.29 (+1.23s | 2.4%) | Apex | 06/05/2026 | 2026 CST Summer Invitational | |
| 2191 | Alejandro Rigual Osorno | 50.52 | 10 | B Min | BB: 49.29 (+1.23s | 2.4%) | Fast Falcons | 06/25/2026 | 2026 FAST Independence Invitational | |
| 2192 | Ethan Schiffman | 50.53 | 8 | B Min | BB: 49.29 (+1.24s | 2.5%) | Monocacy Aquatic Club | 07/24/2026 | 2026 Maryland Long Course Junior Championship | |
| 2193 | William MacPhail | 50.53 | 10 | B Min | BB: 49.29 (+1.24s | 2.5%) | Edina Swim Club | 05/03/2026 | 2026 MN SEMS LC Invite | |
| 2194 | Owen Hayes | 50.53 | 10 | B Min | BB: 49.29 (+1.24s | 2.5%) | Hills Hurricane Swimming | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 2195 | Bohdan Tereshchenko | 50.54 | 10 | B Min | BB: 49.29 (+1.25s | 2.5%) | South Florida Aquatic Club | 06/26/2026 | June Central Park Series | |
| 2196 | Edward Miles | 50.56 | 9 | B Min | BB: 49.29 (+1.27s | 2.5%) | Waterloo Swimming | 04/19/2026 | 2026 ST WLOO Classic | |
| 2197 | Romeo DelFoss | 50.57 | 8 | B Min | BB: 49.29 (+1.28s | 2.5%) | Swim Gators Str | 03/07/2026 | 2026 Lake Huron Regional Meet | |
| 2198 | Cole Rowley | 50.57 | 8 | B Min | BB: 49.29 (+1.28s | 2.5%) | Mecklenburg Swim Association | 07/24/2026 | 2026 Sailfish Summer Splash | |
| 2199 | Tomas Barrios Vivas | 50.57 | 10 | B Min | BB: 49.29 (+1.28s | 2.5%) | YMCA of Central Florida | 06/11/2026 | 2026 RAFC Summer Solstice Invitational | |
| 2200 | Zachary Tan | 50.57 | 9 | B Min | BB: 49.29 (+1.28s | 2.5%) | Rochester Swim Club | 05/30/2026 | 2026 MN RSC Summer Jam | |
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.