USA Boys 10 & under - 50 Y Breast
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 | Oliver Monroe | 42.57 | 10 | BB Min | A: 42.09 (+0.48s | 1.1%) | Royal Swimming | 01/31/2026 | 2026 Guppy Bowl | |
| 702 | Bill Curran | 42.58 | 9 | BB Min | A: 42.09 (+0.49s | 1.2%) | Revolution Swim Club | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 703 | Santiago Diaz | 42.59 | 9 | BB Min | A: 42.09 (+0.50s | 1.2%) | Rockville Montgomery Swim Club | 01/16/2026 | 2026 RMSC January Intrasquad Meet | |
| 704 | Jensen Huang | 42.59 | 10 | BB Min | A: 42.09 (+0.50s | 1.2%) | Arcadia Riptides Swim Club | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 705 | Owen Tan | 42.59 | 9 | BB Min | A: 42.09 (+0.50s | 1.2%) | Hawaii Swimming Club | 12/06/2025 | 45th Annual Ken Suenaga Invitational (SCY) | |
| 706 | Timur Kochmar | 42.60 | 8 | BB Min | A: 42.09 (+0.51s | 1.2%) | SwimRight Team | 10/10/2025 | 2025 Gulliver Fall Classic | |
| 707 | Collin Boyle | 42.60 | 10 | BB Min | A: 42.09 (+0.51s | 1.2%) | Herndon Aquatic Club | 11/21/2025 | 2025 Swim Rock | |
| 708 | Nuo Zha | 42.60 | 11 | BB Min | A: 42.09 (+0.51s | 1.2%) | Charles River Aquatics | 02/06/2026 | 2026 NE CRA Last Chance February Invite | |
| 709 | Jake McNair | 42.60 | 8 | BB Min | A: 42.09 (+0.51s | 1.2%) | Bellevue Club Swim Team | 12/12/2025 | 2025 PN 14 Under Short Course Champs APPROVED | |
| 710 | Winston Du | 42.60 | 10 | BB Min | A: 42.09 (+0.51s | 1.2%) | Aquajets Swim Team | 02/07/2026 | 2026 MN AQJT February Invite | |
| 711 | William Martzke | 42.61 | 10 | BB Min | A: 42.09 (+0.52s | 1.2%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 10/17/2025 | 2025 OLY Fall Classic | |
| 712 | Matthew Zhu | 42.61 | 10 | BB Min | A: 42.09 (+0.52s | 1.2%) | Rose Bowl Aquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 713 | Santiago Diaz | 42.61 | 9 | BB Min | A: 42.09 (+0.52s | 1.2%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 714 | Phinnaeus Johnson | 42.62 | 10 | BB Min | A: 42.09 (+0.53s | 1.2%) | Gilroy Gators Swim Team | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 715 | Max Matov | 42.62 | 10 | BB Min | A: 42.09 (+0.53s | 1.2%) | Commonwealth Swimming | 10/25/2025 | 2025 NE SHAWMUT Pumpkin Splash Copied | |
| 716 | Max Madera | 42.62 | 10 | BB Min | A: 42.09 (+0.53s | 1.2%) | Fast Falcons | 12/05/2025 | 2025 Speedo Gator Holiday Classic | |
| 717 | Mason Kim | 42.63 | 10 | BB Min | A: 42.09 (+0.54s | 1.3%) | Maywood Sparks Swim Team | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 718 | Pietro Bucci | 42.63 | 10 | BB Min | A: 42.09 (+0.54s | 1.3%) | United Swim Club | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 719 | Harrison Carr | 42.63 | 10 | BB Min | A: 42.09 (+0.54s | 1.3%) | Aquajets Swim Team | 11/08/2025 | 2025 MN WOLF HOWL AT THE MOON INVITE | |
| 720 | John Matook | 42.64 | 10 | BB Min | A: 42.09 (+0.55s | 1.3%) | YMCA of the North Shore Sharks | 09/27/2025 | 2025 NE YNS September Sprint Spectacular Co | |
| 721 | Matthew Ko | 42.64 | 10 | BB Min | A: 42.09 (+0.55s | 1.3%) | Aspire Aquatics of Colorado | 01/04/2026 | 2026 CO AAC Sprint Eliminator Invite | |
| 722 | Adrian Andrychowski | 42.64 | 10 | BB Min | A: 42.09 (+0.55s | 1.3%) | Westport Weston Family YMCA Wa | 12/11/2025 | 2025 NE SHAWMUT Candy Cane Classic | |
| 723 | Davis King | 42.65 | 9 | BB Min | A: 42.09 (+0.56s | 1.3%) | Tac Titans | 02/14/2026 | 2026 TAC TITANS February Qualifier Meet | |
| 724 | Thomas Ciarniello | 42.65 | 10 | BB Min | A: 42.09 (+0.56s | 1.3%) | Nation\\\\\\'s Capital Swim Club | 01/17/2026 | PVS January Open 2026 PWCS | |
| 725 | Lucas Pan | 42.66 | 8 | BB Min | A: 42.09 (+0.57s | 1.3%) | Santa Clara Swim Club | 11/08/2025 | Folsom Classic 2025 | |
| 726 | Isaac Kalsbeek | 42.67 | 10 | BB Min | A: 42.09 (+0.58s | 1.4%) | New Wave Swim Team | 12/13/2025 | 2025 Ugly Sweater Meet | |
| 727 | William Massie | 42.67 | 10 | BB Min | A: 42.09 (+0.58s | 1.4%) | O\\\\\\'Neal Aquatics | 02/14/2026 | 2026 TAC TITANS February Qualifier Meet | |
| 728 | Arian Gavriljuk | 42.67 | 10 | BB Min | A: 42.09 (+0.58s | 1.4%) | Pro Swimming | 12/12/2025 | 2025 PN 14 Under Short Course Champs APPROVED | |
| 729 | Hengyu Cao | 42.68 | 9 | BB Min | A: 42.09 (+0.59s | 1.4%) | Saline Swim Team | 12/13/2025 | 2025 DRD Winter Solstice Meet | |
| 730 | Hudson Rowlands | 42.68 | 10 | BB Min | A: 42.09 (+0.59s | 1.4%) | Mecklenburg Swim Association | 12/05/2025 | ATOM Winter Invite 2025 | |
| 731 | Davis Chappell | 42.68 | 9 | BB Min | A: 42.09 (+0.59s | 1.4%) | Hampton Virginia Current | 11/14/2025 | ISCA Fall Classic Championship 2025 | |
| 732 | Jack Broadbent | 42.69 | 10 | BB Min | A: 42.09 (+0.60s | 1.4%) | Mystic Hammerheads | 02/01/2026 | 2026 NE NCYW 36th Annual YMCA Pentathlon | |
| 733 | Matthew Frankovic | 42.70 | 9 | BB Min | A: 42.09 (+0.61s | 1.4%) | Twisters Swim Club | 01/24/2026 | 2026 MR FLY Fran Schnarr Sprint Pentathlon Me | |
| 734 | Beckett Roth | 42.70 | 10 | BB Min | A: 42.09 (+0.61s | 1.4%) | Nation\\\\\\'s Capital Swim Club | 12/11/2025 | 2025 Katie Ledecky Invitational | |
| 735 | Jake Brown | 42.70 | 10 | BB Min | A: 42.09 (+0.61s | 1.4%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 02/13/2026 | 2026 Showdown In Motown | |
| 736 | Reagan Wilsey | 42.70 | 10 | BB Min | A: 42.09 (+0.61s | 1.4%) | Palo Alto Stanford Aquatics | 01/24/2026 | 2026 Zone 1 North Championships | |
| 737 | Yuning Huang | 42.70 | 9 | BB Min | A: 42.09 (+0.61s | 1.4%) | Rose Bowl Aquatics | 12/12/2025 | 2025 CA SCS SCAT WAG | |
| 738 | Adrian Tu | 42.71 | 10 | BB Min | A: 42.09 (+0.62s | 1.5%) | Walnut Creek Aquabears | 12/12/2025 | Winter SC Age Group Championships | |
| 739 | Crosby Coleman | 42.71 | 10 | BB Min | A: 42.09 (+0.62s | 1.5%) | Rochester Swim Club | 11/08/2025 | 2025 MN WOLF HOWL AT THE MOON INVITE | |
| 740 | Orion Blue-Smith | 42.71 | 9 | BB Min | A: 42.09 (+0.62s | 1.5%) | Palo Alto Stanford Aquatics | 12/20/2025 | 2025 PASA Winter Frolic Meet @ PALY HS | |
| 741 | Beau Burgess | 42.72 | 10 | BB Min | A: 42.09 (+0.63s | 1.5%) | Nova of Virginia | 10/24/2025 | NOVA Halloween Haunt | |
| 742 | Oliver Shalvey | 42.72 | 10 | BB Min | A: 42.09 (+0.63s | 1.5%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 743 | Konnor Pham-Nguyen | 42.73 | 10 | BB Min | A: 42.09 (+0.64s | 1.5%) | Alameda Gators | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 744 | Nathan Hsu | 42.73 | 10 | BB Min | A: 42.09 (+0.64s | 1.5%) | Nitro Swimming | 02/06/2026 | 2026 ST AQTX STX Champs North | |
| 745 | Andrew Zdrada | 42.74 | 9 | BB Min | A: 42.09 (+0.65s | 1.5%) | Saline Swim Team | 11/21/2025 | 2025 SST Fall Classic | |
| 746 | James Wright | 42.74 | 10 | BB Min | A: 42.09 (+0.65s | 1.5%) | Club Talon | 02/13/2026 | 2026 SE BAY Region 2 Championships Copied | |
| 747 | Jackson Staples | 42.75 | 10 | BB Min | A: 42.09 (+0.66s | 1.5%) | Las Cruces Aquatic Team | 02/13/2026 | 2026 BD Arctic BLAST Swim Meet | |
| 748 | Bennett Upton | 42.75 | 9 | BB Min | A: 42.09 (+0.66s | 1.5%) | Greensboro Community YMCA | 01/23/2026 | GCY Winter Meet 2026 | |
| 749 | Jonathan Kerekes | 42.75 | 10 | BB Min | A: 42.09 (+0.66s | 1.5%) | Raleigh Swimming Association | 02/12/2026 | 2026 RSA Cupid Cuts | |
| 750 | Henry Goddard | 42.75 | 9 | BB Min | A: 42.09 (+0.66s | 1.5%) | Cascadia Swimming | 08/01/2025 | Big Kahuna 2025 | |
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.