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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2301 | 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 | |
| 2302 | Greyson Bobev | 50.40 | 8 | B Min | BB: 49.29 (+1.11s | 2.2%) | The Berkeley Barracudas | 06/06/2025 | 2025 TAMPA BAY SWIM CLASSIC | |
| 2303 | 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 | |
| 2304 | 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 | |
| 2305 | Levi Velo | 50.42 | 9 | B Min | BB: 49.29 (+1.13s | 2.2%) | Rattlers Swim Club | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | |
| 2306 | 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 | |
| 2307 | 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 | |
| 2308 | Mihai Nicolaev | 50.42 | 10 | B Min | BB: 49.29 (+1.13s | 2.2%) | Front Range Barracudas | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 2309 | Alexander Carter | 50.43 | 8 | B Min | BB: 49.29 (+1.14s | 2.3%) | Ensworth Aquatics | 05/15/2026 | 2026 Officially Summer Invitational | |
| 2310 | 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 | |
| 2311 | Aleksander Rapoport | 50.44 | 7 | B Min | BB: 49.29 (+1.15s | 2.3%) | Swim Coral Springs | 06/26/2026 | 2026 Michael Lohberg Invitational | |
| 2312 | Brant Davis | 50.44 | 7 | B Min | BB: 49.29 (+1.15s | 2.3%) | Pueblo County Swim Team | 06/05/2026 | 2026 CO NJ Summer Solstice Invite | |
| 2313 | 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 | |
| 2314 | Lennox Thomas | 50.44 | 9 | B Min | BB: 49.29 (+1.15s | 2.3%) | United Swim Club | 06/26/2026 | ATAC Long Course Invitational | |
| 2315 | 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 | |
| 2316 | 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 | |
| 2317 | 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 | |
| 2318 | 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 | |
| 2319 | 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 | |
| 2320 | 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 | |
| 2321 | Jasper Yan | 50.49 | 7 | 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+ | |
| 2322 | Wesley Lotano | 50.49 | 8 | B Min | BB: 49.29 (+1.20s | 2.4%) | Jupiter Dragons Swim Team | 06/13/2026 | 2026 TCA Aaron Vaughn Memorial | |
| 2323 | 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 | |
| 2324 | 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 | |
| 2325 | Leo Labay | 50.50 | 10 | B Min | BB: 49.29 (+1.21s | 2.4%) | YMCA of Austin Swim Alliance | 04/19/2026 | 2026 ST TXLA 10 U Long Course Kick Off | |
| 2326 | 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 | |
| 2327 | 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 | |
| 2328 | 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 | |
| 2329 | Nathaniel Kunzi | 50.51 | 10 | B Min | BB: 49.29 (+1.22s | 2.4%) | Swim Melbourne | 06/13/2026 | 2026 TCA Aaron Vaughn Memorial | |
| 2330 | Alejandro Rigual Osorno | 50.52 | 10 | B Min | BB: 49.29 (+1.23s | 2.4%) | Fast Falcons | 06/25/2026 | 2026 FAST Independence Invitational | |
| 2331 | Mark Ilin | 50.52 | 10 | B Min | BB: 49.29 (+1.23s | 2.4%) | Apex | 06/05/2026 | 2026 CST Summer Invitational | |
| 2332 | 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+ | |
| 2333 | 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 | |
| 2334 | 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 | |
| 2335 | 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 | |
| 2336 | Edward Miles | 50.56 | 8 | B Min | BB: 49.29 (+1.27s | 2.5%) | Waterloo Swimming | 04/19/2026 | 2026 ST WLOO Classic | |
| 2337 | 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 | |
| 2338 | 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 | |
| 2339 | Lazar Bursac | 50.57 | 9 | B Min | BB: 49.29 (+1.28s | 2.5%) | Blue Wave Swimming | 05/15/2026 | 2026 SAINT PETE S 2nd LONG COURSE MEET | |
| 2340 | Cole Rowley | 50.57 | 8 | B Min | BB: 49.29 (+1.28s | 2.5%) | Mecklenburg Swim Association | 07/24/2026 | 2026 Sailfish Summer Splash | |
| 2341 | 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 | |
| 2342 | Brendan Stork | 50.58 | 10 | B Min | BB: 49.29 (+1.29s | 2.6%) | Clovis Swim Club | 06/27/2026 | 2026 Santa Clara LC Race To Age Group Champs | |
| 2343 | Crew Lockett | 50.58 | 7 | B Min | BB: 49.29 (+1.29s | 2.6%) | Nitro Swimming | 06/20/2026 | 2026 ST NTRO LC Summer Classic | |
| 2344 | Carter Busha | 50.58 | 10 | B Min | BB: 49.29 (+1.29s | 2.6%) | Fast Falcons | 06/25/2026 | 2026 FAST Independence Invitational | |
| 2345 | Aedan Wilson | 50.58 | 10 | B Min | BB: 49.29 (+1.29s | 2.6%) | Crimson Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 2346 | Frank Rodriguez | 50.58 | 10 | B Min | BB: 49.29 (+1.29s | 2.6%) | Memphis Tiger Swimming | 05/16/2026 | NAC LC May Classic | |
| 2347 | Jackson Jimenez-Grimes | 50.58 | 10 | B Min | BB: 49.29 (+1.29s | 2.6%) | Rattlers Swim Club | 07/23/2026 | 2026 BD Long Course Championship | |
| 2348 | Robert Gaines | 50.59 | 8 | B Min | BB: 49.29 (+1.30s | 2.6%) | Greensboro Community YMCA | 05/15/2026 | 2026 NCAC Meet On The Hill | |
| 2349 | Jasper Tian | 50.60 | 9 | B Min | BB: 49.29 (+1.31s | 2.6%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 2350 | Dominic D'Agostino | 50.60 | 10 | B Min | BB: 49.29 (+1.31s | 2.6%) | Monocacy Aquatic Club | 07/24/2026 | 2026 Maryland Long Course Junior Championship | |
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.