USA Girls 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 801 | Grace Mense | 42.70 | 10 | A Min | AA: 40.89 (+1.81s | 4.2%) | Rockville Montgomery Swim Club | 10/17/2025 | 2025 RMSC October Kick Off Classic | |
| 802 | Emmilyn Hamilton | 42.71 | 9 | A Min | AA: 40.89 (+1.82s | 4.3%) | Stingrays Swim Team | 12/04/2025 | 2025 RAYS Nutcracker Classic Copied | |
| 803 | Emily Lu | 42.72 | 10 | A Min | AA: 40.89 (+1.83s | 4.3%) | Long Island Aquatic Club | 01/09/2026 | 2026 MR TVSC TJ Kelly Memorial Joust | |
| 804 | Sienna Silas | 42.72 | 10 | A Min | AA: 40.89 (+1.83s | 4.3%) | Treasure Coast Aquatics | 12/13/2025 | Harry Meisel Championships East Copied | |
| 805 | Evelina Cheng | 42.72 | 9 | A Min | AA: 40.89 (+1.83s | 4.3%) | Mason Makos Swim Team | 01/16/2026 | GSA January Jump Start 2026 | |
| 806 | Ryann LeDuc | 42.74 | 10 | A Min | AA: 40.89 (+1.85s | 4.3%) | Kingfish Swimming Medfield | 01/30/2026 | 2026 NE GS Silver Championships | |
| 807 | Adelaide Watson | 42.74 | 9 | A Min | AA: 40.89 (+1.85s | 4.3%) | Palo Alto Stanford Aquatics | 02/13/2026 | 2026 Neptune Swimming Invitational | |
| 808 | Kayla Xu | 42.75 | 9 | A Min | AA: 40.89 (+1.86s | 4.4%) | Supernova Swim Team | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 809 | Maya Blackman | 42.75 | 10 | A Min | AA: 40.89 (+1.86s | 4.4%) | Columbia Aquatics Association | 01/03/2026 | 2026 ASTS Invitational | |
| 810 | Karlyn Yun | 42.75 | 9 | A Min | AA: 40.89 (+1.86s | 4.4%) | Webbs Tornadoes Swim Team | 01/16/2026 | 2026 NE CS Bronze Championships | |
| 811 | Stella Chen | 42.76 | 10 | A Min | AA: 40.89 (+1.87s | 4.4%) | South Shore YMCA Strypers | 02/13/2026 | 2026 NE SAC 10 Under Champs | |
| 812 | Natalie Williams | 42.76 | 9 | A Min | AA: 40.89 (+1.87s | 4.4%) | South Lake Aquatic Club | 01/16/2026 | 2026 SE Ralph Crocker Classic | |
| 813 | Emalin Diep | 42.76 | 10 | A Min | AA: 40.89 (+1.87s | 4.4%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 814 | Willow Herod | 42.77 | 9 | A Min | AA: 40.89 (+1.88s | 4.4%) | Patriot Aquatics | 12/04/2025 | RAFC Winter Classic | |
| 815 | Ella Jones | 42.77 | 10 | A Min | AA: 40.89 (+1.88s | 4.4%) | North Palm Beach Swim Club | 01/23/2026 | SPEEDO CUP CLOSED INVITE Copied | |
| 816 | Katherine Joyner | 42.77 | 10 | A Min | AA: 40.89 (+1.88s | 4.4%) | Poseidon Swimming Inc | 11/22/2025 | NOVA Cranberry Contender | |
| 817 | Olivia Posegay | 42.77 | 8 | A Min | AA: 40.89 (+1.88s | 4.4%) | Nitro Swimming | 01/31/2026 | 2026 ST NTRO Fiery Flames | |
| 818 | Ivy Acosta | 42.77 | 10 | A Min | AA: 40.89 (+1.88s | 4.4%) | South Florida Aquatic Club | 01/16/2026 | 2026 Speedo SoFlo Open | |
| 819 | Lily Clifford | 42.77 | 10 | A Min | AA: 40.89 (+1.88s | 4.4%) | Rockville Montgomery Swim Club | 12/11/2025 | 2025 Riley Eaton Holiday Invitational | |
| 820 | Emma Zhu | 42.78 | 10 | A Min | AA: 40.89 (+1.89s | 4.4%) | Burlingame Aquatics | 10/25/2025 | TYR BAC SPOOKY FALL CLASSIC | |
| 821 | Lillian Kozina | 42.78 | 9 | A Min | AA: 40.89 (+1.89s | 4.4%) | Front Range Barracudas | 02/28/2025 | 2025 CO CSI 14 U Age Group Championships | |
| 822 | Oriana Peterson | 42.80 | 10 | BB Min | A: 42.79 (+0.01s | 0.0%) | Island Aquatics | 01/10/2026 | NEW YEAR S MAGSA SCY Meet | |
| 823 | Katelyn Rasavongseuk | 42.80 | 9 | BB Min | A: 42.79 (+0.01s | 0.0%) | Sporting Jax Aquatic Club | 12/04/2025 | RAFC Winter Classic | |
| 824 | Mia Ren | 42.80 | 10 | BB Min | A: 42.79 (+0.01s | 0.0%) | Long Island Aquatic Club | 10/25/2025 | 2025 MR LIAC Chappy S Invitational | |
| 825 | Olivia Toothman | 42.80 | 9 | BB Min | A: 42.79 (+0.01s | 0.0%) | YMCA of Greenwich Marlims | 12/11/2025 | 35th Annual Winter Championships | |
| 826 | Finley Bloomstine | 42.80 | 10 | BB Min | A: 42.79 (+0.01s | 0.0%) | Swim Melbourne | 01/24/2026 | 2026 TCA Winter Open | |
| 827 | Grayson Darcey | 42.81 | 9 | BB Min | A: 42.79 (+0.02s | 0.0%) | Hydro-sonic Tiburones | 01/17/2026 | PVS January Open 2026 Fairland | |
| 828 | Adelaide Celentano | 42.81 | 10 | BB Min | A: 42.79 (+0.02s | 0.0%) | Arlington Aquatic Club | 10/25/2025 | 2025 PV MAKO PUMPKIN CLASSIC | |
| 829 | Chloe Leibhan | 42.81 | 9 | BB Min | A: 42.79 (+0.02s | 0.0%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 02/01/2026 | February Closed Invite | |
| 830 | Liliana Larson | 42.83 | 9 | BB Min | A: 42.79 (+0.04s | 0.1%) | Mesa Aquatics Club | 02/14/2025 | 33rd Annual Lost Dutchman Invitational | |
| 831 | Amelia Erwin | 42.83 | 9 | BB Min | A: 42.79 (+0.04s | 0.1%) | Cypress Fairbanks Swim Club | 01/31/2025 | 2025 Fleet Mardi Gras | |
| 832 | Hannah Linowska | 42.83 | 9 | BB Min | A: 42.79 (+0.04s | 0.1%) | Olympic Cascade Aquatics | 11/09/2025 | 2025 PN C Pentathlon | |
| 833 | Aashi Kanyal | 42.83 | 9 | BB Min | A: 42.79 (+0.04s | 0.1%) | San Ramon Valley Aquatics | 01/31/2026 | Zone 2 Winter Championship Meet | |
| 834 | Caroline Deykin | 42.84 | 9 | BB Min | A: 42.79 (+0.05s | 0.1%) | Unattached | 02/13/2026 | 2026 ST HPAC STX Champs South | |
| 835 | Sharon Teng | 42.84 | 9 | BB Min | A: 42.79 (+0.05s | 0.1%) | Rockville Montgomery Swim Club | 12/04/2025 | 2025 PV Turkey Claus Showdown | |
| 836 | Madison Lee | 42.85 | 8 | BB Min | A: 42.79 (+0.06s | 0.1%) | Olympus Aquatics | 03/05/2025 | 2025 Short Course UTAGS Championships | |
| 837 | Grace McShane | 42.86 | 10 | BB Min | A: 42.79 (+0.07s | 0.2%) | York Swim Club of Northern Vir | 01/17/2026 | PVS January Open 2026 PWCS | |
| 838 | Hailey Ng | 42.86 | 10 | BB Min | A: 42.79 (+0.07s | 0.2%) | 92ny Flying Dolphins | 02/06/2026 | 2026 MR YMID February Classic Copied | |
| 839 | Melania Pawlus | 42.88 | 10 | BB Min | A: 42.79 (+0.09s | 0.2%) | Motor City Aquatics | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 840 | Sophie Healy | 42.88 | 10 | BB Min | A: 42.79 (+0.09s | 0.2%) | Life Time Fitness New York Swi | 01/16/2026 | 2026 MR NFS 43rd Annual Dr MLK Jr Invite | |
| 841 | Mabel Johnston | 42.88 | 10 | BB Min | A: 42.79 (+0.09s | 0.2%) | Meadowbrook Swim Team | 11/14/2025 | Harvest Festival 2025 | |
| 842 | Evangeline Yeykal | 42.89 | 10 | BB Min | A: 42.79 (+0.10s | 0.2%) | Sporting Jax Aquatic Club | 01/17/2026 | 2026 GOAT TYR Team Challenge And SYOA | |
| 843 | Daphne Economopoulos | 42.89 | 9 | BB Min | A: 42.79 (+0.10s | 0.2%) | All Star Aquatics | 12/05/2025 | 2025 Christmas Championships | |
| 844 | McKenzie Ryan | 42.89 | 10 | BB Min | A: 42.79 (+0.10s | 0.2%) | Commonwealth Swimming | 12/11/2025 | 2025 NE SHAWMUT Candy Cane Classic | |
| 845 | Liv Pontailler | 42.89 | 10 | BB Min | A: 42.79 (+0.10s | 0.2%) | Piedmont Swim Team | 11/08/2025 | Albany Armada Aquatics C B BB+ Meet | |
| 846 | Dakota Shiao | 42.89 | 9 | BB Min | A: 42.79 (+0.10s | 0.2%) | Avon Swim Club | 02/28/2025 | 2025 CO CSI 14 U Age Group Championships | |
| 847 | Serena Tang | 42.89 | 10 | BB Min | A: 42.79 (+0.10s | 0.2%) | Long Island Express | 01/30/2026 | 2026 MR LIE Second Chance Invitational | |
| 848 | Francesca Porrino | 42.89 | 10 | BB Min | A: 42.79 (+0.10s | 0.2%) | Rio Del Oro Rapids | 11/08/2025 | Folsom Classic 2025 | |
| 849 | Vivienne Hope | 42.90 | 11 | BB Min | A: 42.79 (+0.11s | 0.3%) | YMCA of Metro North Tritons | 01/10/2026 | 2026 NE YNS YMCA Eastern MA Districts | |
| 850 | Victoria Grabowski | 42.90 | 10 | BB Min | A: 42.79 (+0.11s | 0.3%) | Stingrays Swim Team | 12/04/2025 | 2025 RAYS Nutcracker Classic Copied | |
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.