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 | |
|---|---|---|---|---|---|---|---|---|---|
| 651 | Xander Liu | 43.44 | 10 | BB Min | A: 43.09 (+0.35s | 0.8%) | Sailfish | 04/10/2026 | 2026 ST LSAC 6th Annual Atomic Fest | |
| 652 | Young Sun | 43.46 | 9 | BB Min | A: 43.09 (+0.37s | 0.9%) | Pro Swimming | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 653 | Aaron Yang | 43.46 | 10 | BB Min | A: 43.09 (+0.37s | 0.9%) | Tac Titans | 06/11/2026 | 2026 CMC Triangle Classic Meet | |
| 654 | Luke Battles | 43.46 | 10 | BB Min | A: 43.09 (+0.37s | 0.9%) | Southwest Aquatic Warriors | 05/15/2026 | 2026 ST NIST Salute To The Troops | |
| 655 | Owen Yuk | 43.47 | 10 | BB Min | A: 43.09 (+0.38s | 0.9%) | Nation\\\\\\'s Capital Swim Club | 06/05/2026 | HNVR Storm Surge 2026 | |
| 656 | Adam Lum | 43.48 | 10 | BB Min | A: 43.09 (+0.39s | 0.9%) | Lakewood Aquatics | 06/11/2026 | 2026 SCS June AG Invite | |
| 657 | Max Chao | 43.49 | 9 | BB Min | A: 43.09 (+0.40s | 0.9%) | Tac Titans | 06/11/2026 | 2026 CMC Triangle Classic Meet | |
| 658 | Preston Mueller | 43.49 | 10 | BB Min | A: 43.09 (+0.40s | 0.9%) | Seahawks Swim club | 05/01/2026 | John Traube Memorial 2026 | |
| 659 | Mike Semenov | 43.50 | 10 | BB Min | A: 43.09 (+0.41s | 0.9%) | Beach Cities Alpha | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 660 | Hunter Wilson | 43.50 | 9 | BB Min | A: 43.09 (+0.41s | 0.9%) | Kamehameha Swim Club | 05/02/2026 | Keiko Price Sprint Meet Aloha Mile | |
| 661 | Matthew Davie | 43.50 | 10 | BB Min | A: 43.09 (+0.41s | 0.9%) | Bend Swim Club | 06/19/2026 | Bend Swim Club Sun Country Invite 2026 | |
| 662 | Thomas Shackleton | 43.50 | 10 | BB Min | A: 43.09 (+0.41s | 0.9%) | North Coast Aquatics | 05/23/2026 | SI 2026 TAC CSTE All Ages NTS Meet | |
| 663 | Phillippe Choi | 43.52 | 10 | BB Min | A: 43.09 (+0.43s | 1.0%) | Klg Sports Swim Team | 06/12/2025 | 2025 SCS June AG Invite @ La Mirada Armada | |
| 664 | Adelynn Spurlin | 43.52 | 10 | BB Min | A: 43.09 (+0.43s | 1.0%) | North Jeffco Swim Team | 06/05/2026 | 2026 CO NJ Summer Solstice Invite | |
| 665 | Niccolo Pantana | 43.52 | 9 | BB Min | A: 43.09 (+0.43s | 1.0%) | Excel Aquatics | 06/04/2026 | 2026 Beaman Toyota Firecracker Invite | |
| 666 | Benjamin Krett | 43.52 | 9 | BB Min | A: 43.09 (+0.43s | 1.0%) | Denver Swim Academy | 06/26/2026 | 2026 CO Zone 2 District Meet DU | |
| 667 | Miguel Morales | 43.52 | 10 | BB Min | A: 43.09 (+0.43s | 1.0%) | Brownsville Aquatics | 05/16/2026 | 2026 ST LC BAS May Swim Meet | |
| 668 | Ely Erickson | 43.52 | 9 | BB Min | A: 43.09 (+0.43s | 1.0%) | Hill Country Aquatics | 06/26/2026 | 2026 NEAT Long Course STX Championship | |
| 669 | Ethan Liang | 43.53 | 8 | BB Min | A: 43.09 (+0.44s | 1.0%) | Xtreme Swim Club | 06/12/2026 | 2026 NE CS Summer Solstice | |
| 670 | 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 | |
| 671 | Flynn Sutton | 43.53 | 9 | BB Min | A: 43.09 (+0.44s | 1.0%) | T2 Aquatics | 04/17/2026 | 2026 GCST Spring Open | |
| 672 | Lucas Jiang | 43.53 | 9 | BB Min | A: 43.09 (+0.44s | 1.0%) | Santa Clara Swim Club | 05/22/2026 | 2026 Zone 1 South Firecracker 400 | |
| 673 | Aiden Moore | 43.53 | 10 | BB Min | A: 43.09 (+0.44s | 1.0%) | Capital Area Aqua Phoenix | 05/01/2026 | John Traube Memorial 2026 | |
| 674 | Landon Wang | 43.54 | 10 | BB Min | A: 43.09 (+0.45s | 1.0%) | Seattle Metropolitan Aquatic C | 05/28/2026 | 2026 IE VS Apple Capital | |
| 675 | Maxen Cao | 43.55 | 9 | BB Min | A: 43.09 (+0.46s | 1.1%) | Otter Swim Club | 06/12/2026 | 2026 DACA LC CBA Meet | |
| 676 | Emmett Olsen | 43.55 | 9 | BB Min | A: 43.09 (+0.46s | 1.1%) | Edina Swim Club | 06/05/2026 | 2026 MN NSAC Summer Invite | |
| 677 | 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 | |
| 678 | Ian An | 43.56 | 10 | BB Min | A: 43.09 (+0.47s | 1.1%) | Csp Tideriders | 05/01/2026 | John Traube Memorial 2026 | |
| 679 | 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 | |
| 680 | Levi Rose | 43.56 | 10 | BB Min | A: 43.09 (+0.47s | 1.1%) | Cavalier Aquatics/Piedmont Fam | 05/02/2026 | BASS Jim Frye Memorial Invitational May 2026 | |
| 681 | Luca DeTillio | 43.57 | 10 | BB Min | A: 43.09 (+0.48s | 1.1%) | Bolles School Sharks | 06/18/2026 | 2026 June Classic | |
| 682 | Alfie Mobbs | 43.57 | 9 | BB Min | A: 43.09 (+0.48s | 1.1%) | Lake Oswego Swim Club | 05/22/2026 | 2026 THSC Memorial Weekend Meet | |
| 683 | Finn Peters | 43.57 | 10 | BB Min | A: 43.09 (+0.48s | 1.1%) | Swim Florida | 06/19/2026 | 2026 GCST MARK MCCAW SUMMER INVITE | |
| 684 | Adam Ma | 43.58 | 10 | BB Min | A: 43.09 (+0.49s | 1.1%) | Unattached | 05/29/2026 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 685 | 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 | |
| 686 | Bryant Yang | 43.59 | 10 | BB Min | A: 43.09 (+0.50s | 1.1%) | Tac Titans | 06/11/2026 | 2026 CMC Triangle Classic Meet | |
| 687 | 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 | |
| 688 | Michael Han | 43.60 | 9 | 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 | |
| 689 | Callen Pressnall | 43.60 | 10 | BB Min | A: 43.09 (+0.51s | 1.2%) | Springfield YMCA Swim Team | 06/26/2026 | 88th CSP Summer Invitational | |
| 690 | 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 | |
| 691 | Demian Jarmy | 43.61 | 10 | BB Min | A: 43.09 (+0.52s | 1.2%) | Pleasanton Seahawks | 06/19/2026 | Reno Aquatic Club Gamble | |
| 692 | Vivaan Jithesh | 43.62 | 10 | BB Min | A: 43.09 (+0.53s | 1.2%) | Nation\\\\\\'s Capital Swim Club | 05/01/2026 | Speedo Spring Splash | |
| 693 | Dylan Myers | 43.63 | 10 | BB Min | A: 43.09 (+0.54s | 1.2%) | Black Hills Gold Swimming | 06/12/2026 | 2026 RST Coach Beth Rushmore Classic | |
| 694 | 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) | |
| 695 | Amir Toleubek | 43.63 | 10 | BB Min | A: 43.09 (+0.54s | 1.2%) | Gulliver Swim Club | 06/17/2026 | Swim Fort Lauderdale Speedo Summer Classic 26 | |
| 696 | 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 | |
| 697 | 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 | |
| 698 | Andres Velazquez | 43.64 | 9 | BB Min | A: 43.09 (+0.55s | 1.3%) | Pro Swimming | 06/06/2026 | 2026 PN VAST Summer Sprint Dist Approved | |
| 699 | 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 | |
| 700 | 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 | |
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.