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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1951 | Ellis Gray | 45.89 | 9 | BB Min | A: 42.79 (+3.10s | 6.8%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 01/16/2026 | 2026 Odd Age Classic | |
| 1952 | Shaylin Avendano | 45.89 | 9 | BB Min | A: 42.79 (+3.10s | 6.8%) | SwimFast | 12/05/2025 | 2025 FG Holiday Champ | |
| 1953 | Hadley Willemin | 45.89 | 10 | BB Min | A: 42.79 (+3.10s | 6.8%) | Calvert Aquatics Club | 02/06/2026 | 2026 Last Chance Qualifying Meet | |
| 1954 | Ellis Hodshon | 45.89 | 9 | BB Min | A: 42.79 (+3.10s | 6.8%) | Bluefish Swim Club | 02/08/2026 | 2026 NE ABF ME February Frolic | |
| 1955 | Sloane Sturgill | 45.90 | 10 | BB Min | A: 42.79 (+3.11s | 6.8%) | Tullahoma Swim Club | 01/09/2026 | 2026 Winter Jam | |
| 1956 | Emaline Sardjito | 45.90 | 8 | BB Min | A: 42.79 (+3.11s | 6.8%) | Quince Orchard Swim Academy | 11/08/2025 | 2025 Autumn Mini Meet | |
| 1957 | Lilia Yamamoto | 45.90 | 10 | BB Min | A: 42.79 (+3.11s | 6.8%) | Splash Aquatics | 01/18/2026 | January A+ Meet | |
| 1958 | Prisha Pokharel | 45.90 | 10 | BB Min | A: 42.79 (+3.11s | 6.8%) | Waterloo Swimming | 02/06/2026 | 2026 ST AQTX STX Champs North | |
| 1959 | Stella Parker | 45.91 | 9 | BB Min | A: 42.79 (+3.12s | 6.8%) | Barracuda Swim Club of Northea | 02/13/2026 | 2026 SE BAY Region 2 Championships Copied | |
| 1960 | Marigold Yu | 45.91 | 9 | BB Min | A: 42.79 (+3.12s | 6.8%) | The Fish | 11/14/2025 | 2025 PV November Open Franconia | |
| 1961 | Chloe Kim | 45.91 | 10 | BB Min | A: 42.79 (+3.12s | 6.8%) | Phoenix Aquatic Club | 12/06/2025 | 2025 MR PAC 12 U Holiday Invitational | |
| 1962 | Mackenzie Franssen | 45.91 | 9 | BB Min | A: 42.79 (+3.12s | 6.8%) | Burlington YMCA Dynamo | 01/16/2026 | 2026 NE UVAC Bronze Championships | |
| 1963 | Jessica Zou | 45.91 | 8 | BB Min | A: 42.79 (+3.12s | 6.8%) | Suburban Aquatics | 12/05/2025 | 2025 Christmas Championships | |
| 1964 | Penelope Sablan | 45.92 | 9 | BB Min | A: 42.79 (+3.13s | 6.8%) | 757swim | 09/19/2025 | 2025 757 Swim Battle Of The Burg Intrasquad | |
| 1965 | Madison Gailliard | 45.92 | 10 | BB Min | A: 42.79 (+3.13s | 6.8%) | Razor Aquatics | 01/31/2026 | 2026 Guppy Bowl | |
| 1966 | Brooke Cavaselis | 45.92 | 10 | BB Min | A: 42.79 (+3.13s | 6.8%) | Annapolis Swim Club | 10/17/2025 | 2025 NBAC Fall Fastival Meet | |
| 1967 | Piper Minich | 45.92 | 10 | BB Min | A: 42.79 (+3.13s | 6.8%) | Annapolis Swim Club | 12/04/2025 | 2025 Sport Fair Winter Classic | |
| 1968 | Margot Howard | 45.92 | 10 | BB Min | A: 42.79 (+3.13s | 6.8%) | North Palm Beach Swim Club | 01/23/2026 | SPEEDO CUP CLOSED INVITE Copied | |
| 1969 | Brooklyn Versen | 45.92 | 9 | BB Min | A: 42.79 (+3.13s | 6.8%) | Mecklenburg Swim Association | 01/23/2026 | 2026 TEAM Arena Western Open Copied | |
| 1970 | Olivia Wise | 45.93 | 10 | BB Min | A: 42.79 (+3.14s | 6.8%) | SwimMAC Carolina | 09/27/2025 | 2025 NC SwimMac Blue Orange Intrasquad | |
| 1971 | Sofia Yefremashvili | 45.93 | 10 | BB Min | A: 42.79 (+3.14s | 6.8%) | Long Island Aquatic Club | 11/16/2025 | 2025 MR LIAC Fall Festival Invitational | |
| 1972 | Nora Keever | 45.93 | 10 | BB Min | A: 42.79 (+3.14s | 6.8%) | Seahawk Aquatics | 02/06/2026 | 2026 Last Chance Qualifying Meet | |
| 1973 | Victoria Ikeda | 45.93 | 10 | BB Min | A: 42.79 (+3.14s | 6.8%) | Hawaii Swimming Club | 12/06/2025 | 45th Annual Ken Suenaga Invitational (SCY) | |
| 1974 | Sierra Dunn | 45.94 | 9 | BB Min | A: 42.79 (+3.15s | 6.9%) | Potomac Marlins | 11/07/2025 | 2025 Marlins Invitational | |
| 1975 | Lillian Burner | 45.94 | 10 | BB Min | A: 42.79 (+3.15s | 6.9%) | Riptide Swim Team | 02/07/2026 | 2026 MN AQJT February Invite | |
| 1976 | Abigail Luna | 45.94 | 10 | BB Min | A: 42.79 (+3.15s | 6.9%) | Metro Surge Aquatic Club | 01/17/2026 | PVS January Open 2026 Fairland | |
| 1977 | Eve Kahle | 45.95 | 10 | BB Min | A: 42.79 (+3.16s | 6.9%) | Arlington Aquatic Club | 12/12/2025 | 2025 MAKO HOLIDAY INVITATIONAL | |
| 1978 | Willa Banashak | 45.95 | 9 | BB Min | A: 42.79 (+3.16s | 6.9%) | Rockville Montgomery Swim Club | 12/05/2025 | 2025 Christmas Championships | |
| 1979 | Julia Ramos | 45.95 | 10 | BB Min | A: 42.79 (+3.16s | 6.9%) | Southeast Tennessee Swimming | 01/16/2026 | 2026 TNAQ JANUARY INVITATIONAL | |
| 1980 | Kateryna Molochko | 45.95 | 10 | BB Min | A: 42.79 (+3.16s | 6.9%) | San Ramon Valley Aquatics | 09/27/2025 | Orinda Aquatics SC C B BB+ Meet | |
| 1981 | Olivia Oum | 45.96 | 9 | BB Min | A: 42.79 (+3.17s | 6.9%) | Machine Aquatics | 12/04/2025 | 2025 PV Turkey Claus Showdown | |
| 1982 | Vera Gojkovich | 45.96 | 9 | BB Min | A: 42.79 (+3.17s | 6.9%) | Terrapins Swim Team | 12/05/2025 | Pacific Swim SC C B BB+ Hosted By TERA | |
| 1983 | Bella Chen | 45.96 | 8 | BB Min | A: 42.79 (+3.17s | 6.9%) | Bellevue Club Swim Team | 11/22/2025 | 2025 PN November AGI, Div 3 (UPAC) | |
| 1984 | Izabell Kish | 45.96 | 10 | BB Min | A: 42.79 (+3.17s | 6.9%) | Tualatin Hills Swim Club | 11/07/2025 | 2025 THSC November Open | |
| 1985 | Nikki Henderson | 45.97 | 10 | BB Min | A: 42.79 (+3.18s | 6.9%) | Maverick Aquatics | 01/24/2026 | 2026 CO Montrose Marlins Polar Plunge | |
| 1986 | Chooch Branich | 45.97 | 8 | BB Min | A: 42.79 (+3.18s | 6.9%) | Unattached | 09/20/2025 | WANV CBA+ Endless Summer Meet | |
| 1987 | Ariya Ajay | 45.97 | 9 | BB Min | A: 42.79 (+3.18s | 6.9%) | California Dolphins Swim Team | 11/08/2025 | Albany Armada Aquatics C B BB+ Meet | |
| 1988 | Marlow Reynolds | 45.97 | 10 | BB Min | A: 42.79 (+3.18s | 6.9%) | Condors Swim Club | 11/07/2025 | 2025 MR LIE Fall Classic Invitational | |
| 1989 | Reagan Little | 45.97 | 9 | BB Min | A: 42.79 (+3.18s | 6.9%) | Livermore AquaCowboys | 09/27/2025 | PC LAC C B BB | |
| 1990 | Aria Kumar | 45.97 | 9 | BB Min | A: 42.79 (+3.18s | 6.9%) | Beaverton Area Aquatics Club | 11/07/2025 | 2025 McSwimville Invitational | |
| 1991 | Nicolette Adair | 45.98 | 9 | BB Min | A: 42.79 (+3.19s | 6.9%) | York Swim Club of Northern Vir | 11/07/2025 | 2025 HOKI November Invitational Copied | |
| 1992 | Caroline Deykin | 45.98 | 9 | BB Min | A: 42.79 (+3.19s | 6.9%) | Unattached | 09/12/2025 | 2025 ST SASA Sombrero Series Uno | |
| 1993 | Nora Waldenmayer | 45.98 | 9 | BB Min | A: 42.79 (+3.19s | 6.9%) | Sporting Jax Aquatic Club | 11/15/2025 | EAJ Fall Harvest 2025 | |
| 1994 | Muyan Hu | 45.98 | 10 | BB Min | A: 42.79 (+3.19s | 6.9%) | Quince Orchard Swim Academy | 11/14/2025 | 2025PV November Open Fairland | |
| 1995 | Aadithri Rao | 45.98 | 10 | BB Min | A: 42.79 (+3.19s | 6.9%) | Santa Clara Swim Club | 02/07/2026 | Valley Splash Short Course C B A Meet | |
| 1996 | Poppy Mitchell | 45.98 | 9 | BB Min | A: 42.79 (+3.19s | 6.9%) | Zeus Swim Team | 12/05/2025 | 2025 MR NYS Holiday Classic Trials Finals | |
| 1997 | Miao Yang | 45.99 | 10 | BB Min | A: 42.79 (+3.20s | 7.0%) | Palo Alto Stanford Aquatics | 04/26/2025 | Pacific Swimming 10 Under SC Championships | |
| 1998 | Ava Sysum | 45.99 | 10 | BB Min | A: 42.79 (+3.20s | 7.0%) | San Ramon Valley Aquatics | 12/12/2025 | Winter SC Age Group Championships | |
| 1999 | Rose Hiser | 45.99 | 10 | BB Min | A: 42.79 (+3.20s | 7.0%) | Egra Waves | 01/10/2026 | 2026 Zeeland Winter Classic | |
| 2000 | Alivia Lee | 46.00 | 9 | BB Min | A: 42.79 (+3.21s | 7.0%) | Pro Swimming | 09/26/2025 | 2025 Pro Season Kick Off Intrasquad | |
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.