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 | |
|---|---|---|---|---|---|---|---|---|---|
| 701 | Lucas Jiang | 43.53 | 10 | BB Min | A: 43.09 (+0.44s | 1.0%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 702 | Mason Li | 43.53 | 9 | BB Min | A: 43.09 (+0.44s | 1.0%) | Brea Aquatics | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 703 | Hantian You | 43.54 | 10 | BB Min | A: 43.09 (+0.45s | 1.0%) | Lake Oswego Swim Club | 08/01/2026 | 2026 GACC End Of Season | |
| 704 | Grigorii Vasilenko | 43.54 | 9 | BB Min | A: 43.09 (+0.45s | 1.0%) | Legacy Aquatics | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 705 | George Gray | 43.54 | 10 | BB Min | A: 43.09 (+0.45s | 1.0%) | Portland Aquatic Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 706 | Maxen Cao | 43.55 | 10 | BB Min | A: 43.09 (+0.46s | 1.1%) | Otter Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 707 | Emmett Olsen | 43.55 | 10 | BB Min | A: 43.09 (+0.46s | 1.1%) | Edina Swim Club | 06/05/2026 | 2026 MN NSAC Summer Invite | |
| 708 | Austin Wang | 43.56 | 9 | BB Min | A: 43.09 (+0.47s | 1.1%) | Tac Titans | 06/19/2026 | 2026 TAC TITANS Summer Trident Meet | |
| 709 | Mark Kiselev | 43.56 | 9 | BB Min | A: 43.09 (+0.47s | 1.1%) | Royal Swim Team | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 710 | Isaac Marcuson | 43.56 | 10 | BB Min | A: 43.09 (+0.47s | 1.1%) | Aspire Aquatics of Colorado | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 711 | Luka Radchenko Avondo | 43.56 | 9 | BB Min | A: 43.09 (+0.47s | 1.1%) | Nitro Swimming | 07/09/2026 | 2026 ST NIST LC STAGS | |
| 712 | Alfie Mobbs | 43.57 | 10 | BB Min | A: 43.09 (+0.48s | 1.1%) | Lake Oswego Swim Club | 05/22/2026 | 2026 THSC Memorial Weekend Meet | |
| 713 | Christian Schafer | 43.57 | 10 | BB Min | A: 43.09 (+0.48s | 1.1%) | Lone Star Aquatic Club | 07/09/2026 | 2026 ST NIST LC STAGS | |
| 714 | Charlie Doran | 43.58 | 10 | BB Min | A: 43.09 (+0.49s | 1.1%) | Nova of Virginia | 07/16/2026 | 2026 Virginia Swimming LC Age Group Champions | |
| 715 | Henry Astry | 43.59 | 8 | BB Min | A: 43.09 (+0.50s | 1.1%) | West Express Swim Team | 05/08/2026 | 2026 MN STRM Spring Startup | |
| 716 | Nolan Chaffee | 43.60 | 10 | BB Min | A: 43.09 (+0.51s | 1.2%) | New Wave Swim Team | 07/05/2026 | 2026 TAC July Qualifier Meet | |
| 717 | Michael Han | 43.60 | 10 | BB Min | A: 43.09 (+0.51s | 1.2%) | Mei\\\\\\'s Typhoons Swimming Club | 06/26/2026 | 2026 NE NSSC June 26 28 MIT Invitational | |
| 718 | Mason Priebe | 43.61 | 10 | BB Min | A: 43.09 (+0.52s | 1.2%) | Sheridan Swim Team | 05/29/2026 | 2026 Meet Me In St Louis Invite | |
| 719 | Coryel Harger | 43.61 | 10 | BB Min | A: 43.09 (+0.52s | 1.2%) | Unattached | 07/30/2026 | 2026 CZ 14 U Championship Meet IN | |
| 720 | Watson She | 43.62 | 10 | BB Min | A: 43.09 (+0.53s | 1.2%) | Bellevue Club Swim Team | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 721 | Kais Esmail | 43.63 | 10 | BB Min | A: 43.09 (+0.54s | 1.2%) | Bellingham Bay Swim Team | 06/19/2026 | 2026 IE VS Starlight Open (USAS) | |
| 722 | Beckett Clasen | 43.64 | 10 | BB Min | A: 43.09 (+0.55s | 1.3%) | Cavalier Aquatics/Piedmont Fam | 06/11/2026 | NOVA 2026 Virginia Commonwealth Games | |
| 723 | Reed Nichols | 43.64 | 10 | BB Min | A: 43.09 (+0.55s | 1.3%) | Nova of Virginia | 06/11/2026 | NOVA 2026 Virginia Commonwealth Games | |
| 724 | Jay Kowren | 43.64 | 10 | BB Min | A: 43.09 (+0.55s | 1.3%) | Bainbridge Island Swim Club | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 725 | Tanner Langsdale | 43.65 | 10 | BB Min | A: 43.09 (+0.56s | 1.3%) | York Swim Club of Northern Vir | 05/01/2026 | Speedo Spring Splash | |
| 726 | Zayn Hoffman | 43.65 | 10 | BB Min | A: 43.09 (+0.56s | 1.3%) | Carmel Swim Club | 06/04/2026 | 98th Ohio Valley Championships 2026 | |
| 727 | Jack Wallace | 43.66 | 10 | BB Min | A: 43.09 (+0.57s | 1.3%) | Streamline Aquatic Club | 05/15/2026 | 2026 Officially Summer Invitational | |
| 728 | Logan Krutsinger | 43.66 | 10 | BB Min | A: 43.09 (+0.57s | 1.3%) | Nitro Swimming | 05/10/2026 | 2026 ST TXLA 10 U End Of School Splash | |
| 729 | Eli Delman | 43.67 | 10 | BB Min | A: 43.09 (+0.58s | 1.3%) | Central Ohio Aquatics | 07/23/2026 | 2026 OH LC Junior Championships | |
| 730 | Jordan Kang | 43.67 | 9 | BB Min | A: 43.09 (+0.58s | 1.3%) | Scarlet Aquatics | 07/23/2026 | 2026 NJ Swim LC Gold Championships | |
| 731 | Nolan Vargason | 43.67 | 9 | BB Min | A: 43.09 (+0.58s | 1.3%) | Unattached | 08/06/2026 | 2026 CZ 14 U Championship Meet MN | |
| 732 | River Briscoe | 43.67 | 10 | BB Min | A: 43.09 (+0.58s | 1.3%) | Huntsville Swim Association | 07/17/2026 | 2026 SE Southeastern Summer LC Championships | |
| 733 | Hudson Fain | 43.68 | 10 | BB Min | A: 43.09 (+0.59s | 1.4%) | Team Charlotte Swimming | 06/25/2026 | ONSA Independence Invitational Copied | |
| 734 | Michael Hefner | 43.68 | 9 | BB Min | A: 43.09 (+0.59s | 1.4%) | Aspen Swim Club | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 735 | Braydon Li | 43.69 | 10 | BB Min | A: 43.09 (+0.60s | 1.4%) | Buckeye Swim Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 736 | Calvin Wollard | 43.69 | 8 | BB Min | A: 43.09 (+0.60s | 1.4%) | Columbia Swim Club | 06/26/2026 | 88th CSP Summer Invitational | |
| 737 | Elias Morgan | 43.69 | 10 | BB Min | A: 43.09 (+0.60s | 1.4%) | Huntsville Swim Association | 05/16/2026 | NAC LC May Classic | |
| 738 | Quentin Zhou | 43.70 | 10 | BB Min | A: 43.09 (+0.61s | 1.4%) | SwimMAC Carolina | 05/01/2026 | 2026 NC SwimMAC Spring Splash | |
| 739 | Asher Cariazo | 43.70 | 10 | BB Min | A: 43.09 (+0.61s | 1.4%) | Montrose Marlins Swim Club | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 740 | Luke Zhong | 43.70 | 9 | BB Min | A: 43.09 (+0.61s | 1.4%) | X-Cel Swimming | 07/23/2026 | 2026 NJ Swim LC Gold Championships | |
| 741 | Moses Xia | 43.71 | 10 | BB Min | A: 43.09 (+0.62s | 1.4%) | Wasc | 06/11/2026 | 2026 SCS June AG Invite | |
| 742 | Jameson Nelson | 43.71 | 10 | BB Min | A: 43.09 (+0.62s | 1.4%) | Scarlet Aquatics | 07/05/2026 | 2026 Scarlet Summer Luau | |
| 743 | JR Dorer | 43.72 | 9 | BB Min | A: 43.09 (+0.63s | 1.4%) | Columbus Aquatic Club | 05/16/2026 | 2026 Opelika Open | |
| 744 | Sterling Stewart | 43.72 | 10 | BB Min | A: 43.09 (+0.63s | 1.4%) | South Lake Aquatic Club | 05/22/2026 | 2026 Dr Aspi Doctor Memorial Swim Invite | |
| 745 | Hampton Reed | 43.72 | 10 | BB Min | A: 43.09 (+0.63s | 1.4%) | C.M. Gatton Beaumont YMCA | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 746 | Austin Xue | 43.73 | 10 | BB Min | A: 43.09 (+0.64s | 1.5%) | Waterloo Swimming | 07/16/2025 | 2025 Texas Age Group Championships | |
| 747 | Nathaniel Herman | 43.74 | 10 | BB Min | A: 43.09 (+0.65s | 1.5%) | Firefish Aquatics | 06/19/2026 | 2026 Firefish June Jam | |
| 748 | Adam Jiang | 43.76 | 10 | BB Min | A: 43.09 (+0.67s | 1.5%) | Waterloo Swimming | 06/26/2026 | 2026 NEAT Long Course STX Championship | |
| 749 | Matheus Jacqmin Abijaodi | 43.78 | 10 | BB Min | A: 43.09 (+0.69s | 1.6%) | Marlins Of Raleigh | 06/26/2026 | 2026 MOR Long Course Qualifier | |
| 750 | Cameron Cheng-Zhang | 43.78 | 10 | BB Min | A: 43.09 (+0.69s | 1.6%) | New Wave Swim Team | 07/05/2026 | 2026 TAC July Qualifier 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.