New! ScoreMeUp is now available on the App Store. Download the iOS app →

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
3601 Nicholas Mumper 56.59 9 B: 55.39 (+1.20s | 2.1%) Fox Swim Club 05/29/2026 2026 FOX Speedo Summer Spectacular Meet
3602 Emmett Farmer 56.59 9 B: 55.39 (+1.20s | 2.1%) Tualatin Hills Swim Club 06/12/2026 2026 THSC June Open
3603 Carter Lohser 56.59 8 B: 55.39 (+1.20s | 2.1%) Unattached 05/23/2025 2025 T2 Aquatics Norris Foundation LC Meet
3604 Liam Cabaccang 56.59 9 B: 55.39 (+1.20s | 2.1%) Aloha Aquatics Association 05/02/2026 Keiko Price Sprint Meet Aloha Mile
3605 Wesley Hu 56.60 10 B: 55.39 (+1.21s | 2.1%) Santa Clara Swim Club 06/27/2025 Valley Splash
3606 Noah Amrouch 56.60 9 B: 55.39 (+1.21s | 2.1%) United Swim Club 06/06/2025 2025 MAKOS Summer Splash
3607 Canon Antonich 56.60 8 B: 55.39 (+1.21s | 2.1%) Lewis Clark Neptune Swim Team 05/15/2026 2026 Chris Engledow Memorial Meet
3608 Mateo Jimenez 56.61 9 B: 55.39 (+1.22s | 2.2%) Huntsville Swim Association 04/18/2026 HSA April LC Meet
3609 Guy McCurdy 56.61 9 B: 55.39 (+1.22s | 2.2%) Treasure Coast Aquatics 06/07/2025 2025 TCA Aaron Vaughn Memorial
3610 Ayden Peng 56.61 9 B: 55.39 (+1.22s | 2.2%) Raleigh Swimming Association 06/13/2026 2026 MOR Liberty Meet
3611 William Dillon 56.61 9 B: 55.39 (+1.22s | 2.2%) Raleigh Swimming Association 04/24/2026 2026 RSA Warm Up To LC Copied Copied
3612 Julian Franco Moya 56.62 9 B: 55.39 (+1.23s | 2.2%) Greater Pensacola Aquatic Club 06/05/2026 2026 GPAC Tom Lalor Invitational
3613 Mark Molochko 56.62 8 B: 55.39 (+1.23s | 2.2%) San Ramon Valley Aquatics 06/21/2025 NVST Last Chance AG Champs Summer Plunge 2025
3614 Leonardo Jimenez 56.63 10 B: 55.39 (+1.24s | 2.2%) SOL Swim Team 06/06/2026 2026 SI SOL Splash And Dash Max Jun 6 7
25 Back
1:00.89
1:00.89
50 Back
-4.-26
56.63
50 Back
56.63
3615 Mathias Salayandia 56.63 10 B: 55.39 (+1.24s | 2.2%) EL Paso Border Land Swim Team 05/16/2026 2026 BD SWAT School S Out Summer Bash
3616 Sebastian Marshall 56.64 9 B: 55.39 (+1.25s | 2.2%) Unattached 06/07/2025 Orinda Aquatics LC C B BB+ Meet
3617 Simon Hloben 56.64 10 B: 55.39 (+1.25s | 2.2%) Fast 05/01/2026 John Traube Memorial 2026
3618 Calvin Withrow 56.64 9 B: 55.39 (+1.25s | 2.2%) North Coast Aquatics 05/23/2026 SI 2026 TAC CSTE All Ages NTS Meet
3619 Calvin Littlejohn 56.64 8 B: 55.39 (+1.25s | 2.2%) Eugene City Swim Club 07/12/2025 2025 OSI Arena Summer LC 10 U Championships
3620 Oren Alfiero 56.64 7 B: 55.39 (+1.25s | 2.2%) Marlins Of Raleigh 06/26/2026 2026 MOR Long Course Qualifier
3621 Colin Chin 56.65 9 B: 55.39 (+1.26s | 2.2%) Highlander Aquatic Club 05/15/2026 2026 PA Long Course Invite
3622 Ram Satam 56.65 10 B: 55.39 (+1.26s | 2.2%) Rochester Swim Club 07/18/2025 2025 MN MTKA Minnesota Regional Championship
3623 Christopher Walker 56.65 8 B: 55.39 (+1.26s | 2.2%) Salem Swim Club 06/05/2026 2026 CST Summer Invitational
3624 Owen Deaton 56.65 8 B: 55.39 (+1.26s | 2.2%) Wtrc Sharks 05/15/2026 Kentucky Aquatics Derby Classic
3625 Julio Garza 56.66 8 B: 55.39 (+1.27s | 2.2%) Brownsville Aquatics 04/11/2026 2026 ST LC BAS April Swim Meet
3626 Adrian Real 56.67 9 B: 55.39 (+1.28s | 2.3%) Race Swami 06/06/2025 Speed Lake City 2025
25 Back
22.48
22.48
50 Back
34.19
56.67
50 Back
56.67
3627 Leif Chang 56.67 10 B: 55.39 (+1.28s | 2.3%) Rancho San Dieguito 06/06/2026 2026 SI JBST SPLASH DASH MAX
3628 Nate Smith 56.67 10 B: 55.39 (+1.28s | 2.3%) Sparks Piranhas Swim Team 07/10/2026 2026 NNA Silver State Championships
3629 Fuad Sansour 56.68 10 B: 55.39 (+1.29s | 2.3%) Auburn Aquatics 04/25/2026 2026 SE Jimi Flowers Spring Splash Copied
3630 Cameron Moye 56.68 8 B: 55.39 (+1.29s | 2.3%) North Palm Beach Swim Club 06/06/2026 18th Annual LC NPB Summer Kickoff
3631 Desmond Kobek 56.68 10 B: 55.39 (+1.29s | 2.3%) Great Illinois Swimmers 08/06/2025 2025 Summer Elite Showcase
25 Back
56.73
56.73
50 Back
0.-5
56.68
50 Back
56.68
3632 Maxwell Pennington 56.68 8 B: 55.39 (+1.29s | 2.3%) Firefish Aquatics 06/19/2026 2026 Firefish June Jam
3633 Ngawang Sherpa 56.69 8 B: 55.39 (+1.30s | 2.3%) Swim South Bay 06/27/2026 2026 Santa Clara LC Race To Age Group Champs
3634 Phoenix Brice 56.70 10 B: 55.39 (+1.31s | 2.3%) Star Aquatics 05/15/2026 2026 EAC Memorial Invite
3635 Henry Cutlip 56.70 9 B: 55.39 (+1.31s | 2.3%) YMCA of Kanawha Valley Kraken 05/15/2026 Kentucky Aquatics Derby Classic
3636 Owen Deis 56.70 10 B: 55.39 (+1.31s | 2.3%) Clovis Swim Club 06/22/2024 2024 FDST June A B Modified LC Invitational
3637 Liam Skinner 56.71 8 B: 55.39 (+1.32s | 2.3%) Cache Valley Marlins 06/06/2025 Speed Lake City 2025
3638 Maverick Brown 56.71 8 B: 55.39 (+1.32s | 2.3%) Streamline Aquatics 04/17/2026 2026 STAR April Friday Night At The Races
3639 Brian Xie 56.71 9 B: 55.39 (+1.32s | 2.3%) Wave Aquatics 05/01/2026 2026 PN BC May Flowers Approved
3640 Lincoln Reding 56.72 10 B: 55.39 (+1.33s | 2.3%) Apex 06/05/2026 2026 CST Summer Invitational
3641 Jason Kang 56.72 10 B: 55.39 (+1.33s | 2.3%) SwimMAC Carolina 05/01/2026 2026 NC SwimMAC Spring Splash
3642 Noah Portnoy 56.72 9 B: 55.39 (+1.33s | 2.3%) Dedham Health Hydra 04/24/2026 2026 NE NSSC 4 24 26 Specialty Meet
3643 Emerson Bruton 56.72 8 B: 55.39 (+1.33s | 2.3%) Schertz YMCA Swim Team 05/01/2026 2026 ST AAAA 23rd Annual Cinco De Mayo
3644 Colin Beauregard 56.73 10 B: 55.39 (+1.34s | 2.4%) Great Lakes Tritons 07/09/2026 46th Annual Seahawk Invitational
3645 Alonzo Rodriguez 56.74 8 B: 55.39 (+1.35s | 2.4%) Fast Falcons 06/25/2026 2026 FAST Independence Invitational
3646 Shaoquan Wang 56.74 10 B: 55.39 (+1.35s | 2.4%) Chinook Aquatic Club 05/29/2025 2025 IE VS Apple Capital
3647 Colin Anderson 56.74 10 B: 55.39 (+1.35s | 2.4%) West Express Swim Team 06/27/2025 2025 SD SFST Sanford Invite
3648 Nathaniel Min 56.75 9 B: 55.39 (+1.36s | 2.4%) Milpitas Aquatic Club 05/23/2025 Zone 1 South May Firecracker 500
3649 Luca Guglielmo 56.75 10 B: 55.39 (+1.36s | 2.4%) Tide Swimming 06/05/2026 2026 TIDE Schools Out Classic
3650 Aiden Moballegh 56.75 10 B: 55.39 (+1.36s | 2.4%) Life Time Oregon Swim Team 06/12/2026 2026 THSC June Open

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.