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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2351 | Alex Wu | 51.21 | 8 | B Min | BB: 49.29 (+1.92s | 3.7%) | Santa Clara Swim Club | 06/20/2026 | Zone 1 South Swim Under The Stars | |
| 2352 | Matthew Parish | 51.22 | 9 | B Min | BB: 49.29 (+1.93s | 3.8%) | Riptide Swim Team | 06/27/2026 | 2026 STAR Summer Splash Invite | |
| 2353 | Enzo Farnik | 51.22 | 10 | B Min | BB: 49.29 (+1.93s | 3.8%) | Sarasota Tsunami Swim Team | 05/02/2026 | 2026 Sea Dragon May Open | |
| 2354 | Jack Dokus | 51.23 | 8 | B Min | BB: 49.29 (+1.94s | 3.8%) | Stingrays Swim Team | 06/26/2026 | 2026 VSI LC Northern District Champs | |
| 2355 | Leo Yu | 51.23 | 9 | B Min | BB: 49.29 (+1.94s | 3.8%) | Commonwealth Swimming | 04/11/2026 | 2026 NE CS Season Opener | |
| 2356 | Easton Greger | 51.23 | 8 | B Min | BB: 49.29 (+1.94s | 3.8%) | Central Coast Swim Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 2357 | Angel Cordero | 51.24 | 10 | B Min | BB: 49.29 (+1.95s | 3.8%) | Equipo Natacion Encantada | 05/01/2026 | Jesse Vasallo Swimming Invitational | |
| 2358 | Oliver Tornatore | 51.24 | 10 | B Min | BB: 49.29 (+1.95s | 3.8%) | Central Minnesota Aquatics | 05/10/2025 | 2025 MN HURR LC Spring Opener | |
| 2359 | Gairen Bean | 51.25 | 10 | B Min | BB: 49.29 (+1.96s | 3.8%) | South Bay Aquatics | 07/11/2025 | 2025 SI SDSA All Ages NTS Meet | |
| 2360 | Nolan Sun | 51.26 | 10 | B Min | BB: 49.29 (+1.97s | 3.8%) | Pleasanton Seahawks | 05/23/2026 | 2026 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 2361 | Benjamin Foster | 51.26 | 9 | B Min | BB: 49.29 (+1.97s | 3.8%) | Neptune Swimming | 06/12/2026 | Neptune Swimming June LC Meet | |
| 2362 | Grayson Ahles | 51.26 | 10 | B Min | BB: 49.29 (+1.97s | 3.8%) | Saint Petersburg Aquatics | 06/26/2026 | 2026 SPA S SEMINOLE SUNRISE LANES SWIM MEET | |
| 2363 | Arihaan Goswami | 51.27 | 7 | B Min | BB: 49.29 (+1.98s | 3.9%) | Lifetime | 06/26/2026 | 2026 NE NSSC June 26 28 MIT Invitational | |
| 2364 | Wyatt Hellickson | 51.28 | 10 | B Min | BB: 49.29 (+1.99s | 3.9%) | Life Time Oregon Swim Team | 06/05/2026 | 2026 CST Summer Invitational | |
| 2365 | Max Gu | 51.28 | 9 | B Min | BB: 49.29 (+1.99s | 3.9%) | Nitro Swimming | 05/10/2026 | 2026 ST TXLA 10 U End Of School Splash | |
| 2366 | Samuel Ellsworth | 51.28 | 10 | B Min | BB: 49.29 (+1.99s | 3.9%) | Boise Swim Club | 05/16/2025 | 2025 Spring Fling LC Invitational | |
| 2367 | Skylar Tran | 51.28 | 10 | B Min | BB: 49.29 (+1.99s | 3.9%) | Lakeside Swim Team | 07/09/2026 | 46th Annual Seahawk Invitational | |
| 2368 | Robert Miles | 51.28 | 8 | B Min | BB: 49.29 (+1.99s | 3.9%) | Waterloo Swimming | 04/19/2026 | 2026 ST WLOO Classic | |
| 2369 | Luke Voeller | 51.29 | 9 | B Min | BB: 49.29 (+2.00s | 3.9%) | Apex | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 2370 | Mason Love | 51.29 | 7 | B Min | BB: 49.29 (+2.00s | 3.9%) | Denver Swim Academy | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 2371 | Kai Duarte | 51.30 | 8 | B Min | BB: 49.29 (+2.01s | 3.9%) | Gator Swim Club | 06/05/2026 | 2026 Sunshine State Games | |
| 2372 | Alroy Conry | 51.30 | 8 | B Min | BB: 49.29 (+2.01s | 3.9%) | Aces Swim Club | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 2373 | Alexander Krapp | 51.31 | 10 | B Min | BB: 49.29 (+2.02s | 3.9%) | Thurston Olympians Swim Club | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 2374 | Henry Haddad | 51.31 | 7 | B Min | BB: 49.29 (+2.02s | 3.9%) | Black Team | 04/11/2026 | Spring Showdown 2026 | |
| 2375 | Michael Sohn | 51.32 | 10 | B Min | BB: 49.29 (+2.03s | 4.0%) | Front Range Barracudas | 05/29/2026 | 2026 CO Barracuda Summer Sizzler Invite | |
| 2376 | Timothy Huang | 51.32 | 10 | B Min | BB: 49.29 (+2.03s | 4.0%) | Wave Aquatics | 07/09/2026 | 2026 PN Chinook Seattle Age Group Open Appro | |
| 2377 | Timur Shafigulin | 51.33 | 10 | B Min | BB: 49.29 (+2.04s | 4.0%) | Wave Aquatics | 05/02/2025 | 2025 PN BC May Flowers | |
| 2378 | Beckett Rossi | 51.33 | 9 | B Min | BB: 49.29 (+2.04s | 4.0%) | Bishop Swim Team | 07/10/2026 | 2026 NNA Silver State Championships | |
| 2379 | Rufus Nagygyorgy | 51.33 | 10 | B Min | BB: 49.29 (+2.04s | 4.0%) | Swim Fort Lauderdale | 06/17/2026 | Swim Fort Lauderdale Speedo Summer Classic 26 | |
| 2380 | Nickolas Diaz Zepeda | 51.34 | 9 | B Min | BB: 49.29 (+2.05s | 4.0%) | Tampa Y Swimming | 05/01/2026 | 2026 Stingrays Cinco De Mayo LCM Meet | |
| 2381 | Noah Brantigan | 51.34 | 10 | B Min | BB: 49.29 (+2.05s | 4.0%) | Mecklenburg Swim Association | 06/05/2026 | 2026 TEAM School S Out Summer Invite | |
| 2382 | Nasir Gifford-Philip | 51.34 | 9 | B Min | BB: 49.29 (+2.05s | 4.0%) | Rochester Swim Club | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 2383 | Dylan Kossack | 51.34 | 10 | B Min | BB: 49.29 (+2.05s | 4.0%) | Nova of Virginia | 06/25/2026 | LC Central District Champs | |
| 2384 | Seth Nareedokmai | 51.34 | 8 | B Min | BB: 49.29 (+2.05s | 4.0%) | Jcc Sailfish | 06/12/2025 | Holtrey Summer Classic | |
| 2385 | Leif Osborne | 51.35 | 9 | B Min | BB: 49.29 (+2.06s | 4.0%) | Bay Club Aquatics | 06/06/2026 | 2026 SI JBST SPLASH DASH MAX | |
| 2386 | Elias Smith | 51.35 | 10 | B Min | BB: 49.29 (+2.06s | 4.0%) | Unattached | 06/19/2026 | 2026 MultiCultural Zones | |
| 2387 | Warren Ulm | 51.35 | 8 | B Min | BB: 49.29 (+2.06s | 4.0%) | NJ Sea Dragons | 05/30/2026 | 2026 HACY Summer Solstice | |
| 2388 | Jordan Abouelazm | 51.35 | 10 | B Min | BB: 49.29 (+2.06s | 4.0%) | Fenix Swim Club | 05/22/2026 | 2026 Doral Swim Club LCM Spring Invite | |
| 2389 | Dylan Tran | 51.36 | 8 | B Min | BB: 49.29 (+2.07s | 4.0%) | Lakeside Swim Team | 07/09/2026 | 46th Annual Seahawk Invitational | |
| 2390 | Geonho Lee | 51.38 | 9 | B Min | BB: 49.29 (+2.09s | 4.1%) | Life Time Michigan Swim Team | 02/11/2026 | February 2026 Life Time Michigan Intersquad | |
| 2391 | Harrison Krzenski | 51.40 | 10 | B Min | BB: 49.29 (+2.11s | 4.1%) | South Metro Storm | 05/03/2026 | 2026 MN SEMS LC Invite | |
| 2392 | Matthew Xu | 51.41 | 10 | B Min | BB: 49.29 (+2.12s | 4.1%) | Scarlet Aquatics | 04/26/2026 | 2026 Scarlet April LC Invitational | |
| 2393 | Eric Kim | 51.41 | 10 | B Min | BB: 49.29 (+2.12s | 4.1%) | Auburn Aquatics | 05/16/2026 | 2026 Opelika Open | |
| 2394 | Mohammad El Diasty | 51.41 | 10 | B Min | BB: 49.29 (+2.12s | 4.1%) | Lakewood Rangers Swim Team | 07/10/2026 | 2026 OH NE LC Regional Champs | |
| 2395 | Graham Rosen | 51.41 | 9 | B Min | BB: 49.29 (+2.12s | 4.1%) | Csp Tideriders | 05/01/2026 | John Traube Memorial 2026 | |
| 2396 | Camden Sparenborg | 51.42 | 8 | B Min | BB: 49.29 (+2.13s | 4.1%) | Utah Valley Aquatics | 06/21/2025 | 2025 UT HAST RWB BC Medals Meet | |
| 2397 | Ryan Guo | 51.42 | 7 | B Min | BB: 49.29 (+2.13s | 4.1%) | Columbia Aquatics Association | 06/13/2026 | 2026 CAC Schools Out For Summer LCM Swim Meet | |
| 2398 | Ethan Palsky | 51.42 | 10 | B Min | BB: 49.29 (+2.13s | 4.1%) | Mansfield Aquatic Club | 05/15/2026 | 2026 ST SRG LCM Bud Dallmann Memorial | |
| 2399 | Vincent Falasco | 51.43 | 9 | B Min | BB: 49.29 (+2.14s | 4.2%) | Martin County Swimming | 05/23/2025 | 2025 Dr Aspi Doctor Memorial Invitational | |
| 2400 | Roko Perak | 51.43 | 9 | B Min | BB: 49.29 (+2.14s | 4.2%) | Univ. of Denver Hilltoppers | 07/11/2026 | 2026 CO SBL Summer Sizzler | |
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.