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 | Riley Matta | 47.35 | 10 | BB Min | A: 42.79 (+4.56s | 9.6%) | Annapolis Swim Club | 11/07/2025 | 2025 CAC 5th Annual Zachary Spain Memorial Me | |
| 1952 | Andrea Santarriaga | 47.35 | 9 | BB Min | A: 42.79 (+4.56s | 9.6%) | Southwest Aquatic Team | 02/27/2026 | 2026 BD SCY Border Champs | |
| 1953 | Etta Barbaro | 47.36 | 9 | BB Min | A: 42.79 (+4.57s | 9.6%) | North Carolina Aquatic Club | 11/09/2025 | 2025 12 And Under Mini Meet V2 | |
| 1954 | Liana Ybanez | 47.36 | 10 | BB Min | A: 42.79 (+4.57s | 9.6%) | Brentwood Seawolves | 11/08/2025 | Brentwood Seawolves SCY C B BB+ | |
| 1955 | Lana Kristo | 47.36 | 10 | BB Min | A: 42.79 (+4.57s | 9.6%) | Triton Swimming of Louisville | 01/16/2026 | 2026 HSA TYR Invitational | |
| 1956 | Bailey Eklund | 47.36 | 9 | BB Min | A: 42.79 (+4.57s | 9.6%) | Egra Waves | 03/07/2026 | 2026 Lake Michigan Regional Meet | |
| 1957 | Brailey Adams | 47.37 | 9 | BB Min | A: 42.79 (+4.58s | 9.7%) | Razor Aquatics | 12/12/2025 | OLY Swimming Holiday Bowl | |
| 1958 | Katelyn Grisard | 47.37 | 10 | BB Min | A: 42.79 (+4.58s | 9.7%) | Herndon Aquatic Club | 11/21/2025 | 2025 Swim Rock | |
| 1959 | Jinnie Park | 47.38 | 8 | BB Min | A: 42.79 (+4.59s | 9.7%) | Twisters Swim Club | 12/13/2025 | 2025 MR TRI Winter SCY Invitational | |
| 1960 | Kora Lind | 47.39 | 10 | BB Min | A: 42.79 (+4.60s | 9.7%) | Vermillion Area Swim Team | 10/25/2025 | SD SFST Swim Series Meet #2 | |
| 1961 | Charlotte Goetz | 47.39 | 9 | BB Min | A: 42.79 (+4.60s | 9.7%) | Oly Swimming | 02/06/2026 | 2026 Michigan Open | |
| 1962 | Tatiana Diener | 47.39 | 8 | BB Min | A: 42.79 (+4.60s | 9.7%) | Rockville Montgomery Swim Club | 02/14/2026 | 2026 RMSC Gender Blender Mini Meet | |
| 1963 | Lucy Riley | 47.39 | 10 | BB Min | A: 42.79 (+4.60s | 9.7%) | Sarasota Sharks | 11/07/2025 | 2025 SYS Turkey Meet | |
| 1964 | Harper Walden | 47.40 | 9 | BB Min | A: 42.79 (+4.61s | 9.7%) | Mississippi Makos Swim Team | 12/05/2025 | 2025 SE Christmas In Auburn | |
| 1965 | Olivia Shieh | 47.40 | 10 | BB Min | A: 42.79 (+4.61s | 9.7%) | Lake Oswego Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 1966 | Callie Xu | 47.40 | 10 | BB Min | A: 42.79 (+4.61s | 9.7%) | Spokane Waves Aquatic Team | 02/13/2026 | (Pullman) 2026 IES Jr Champs | |
| 1967 | Helen Zhang | 47.40 | 10 | BB Min | A: 42.79 (+4.61s | 9.7%) | California Dolphins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 1968 | Anna Kudyakova | 47.41 | 10 | BB Min | A: 42.79 (+4.62s | 9.7%) | SwimFast | 02/06/2026 | Friendship Meet 2026 | |
| 1969 | Maeve Henderson | 47.41 | 9 | BB Min | A: 42.79 (+4.62s | 9.7%) | Bergen Barracudas Swim Team | 01/23/2026 | 2026 MR HAWKS AD Trials And Finals | |
| 1970 | Scout Arlich | 47.41 | 10 | BB Min | A: 42.79 (+4.62s | 9.7%) | St Croix Swim Club | 12/12/2025 | 2025 MN SCSC Winter Carnival | |
| 1971 | Presley Henderson | 47.41 | 10 | BB Min | A: 42.79 (+4.62s | 9.7%) | Arlington Aquatic Club | 03/21/2026 | 2026 MAKO SPRING FLING | |
| 1972 | Elizabeth Jiao | 47.41 | 10 | BB Min | A: 42.79 (+4.62s | 9.7%) | Seattle Metropolitan Aquatic C | 03/28/2026 | 2026 PN Spring Showdown, Div 2 Approved | |
| 1973 | McKinley Whitaker | 47.41 | 10 | BB Min | A: 42.79 (+4.62s | 9.7%) | Aspire Aquatics of Colorado | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 1974 | Theodora Streatfeild | 47.42 | 10 | BB Min | A: 42.79 (+4.63s | 9.8%) | Nation\\\\\\'s Capital Swim Club | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 1975 | Claire Todd | 47.42 | 9 | BB Min | A: 42.79 (+4.63s | 9.8%) | Herndon Aquatic Club | 11/21/2025 | 2025 Swim Rock | |
| 1976 | Genevieve Bakis | 47.42 | 10 | BB Min | A: 42.79 (+4.63s | 9.8%) | Bluefish Swim Club | 10/24/2025 | Boofish Halloween Meet | |
| 1977 | Nora Pei | 47.42 | 10 | BB Min | A: 42.79 (+4.63s | 9.8%) | Albany Armada Aquatics | 07/10/2026 | Redwood Empire Swim League Championship | |
| 1978 | Grace Lindsay | 47.43 | 10 | BB Min | A: 42.79 (+4.64s | 9.8%) | Club Wolverine | 11/21/2025 | 2025 SST Fall Classic | |
| 1979 | Victoria Wishart | 47.43 | 10 | BB Min | A: 42.79 (+4.64s | 9.8%) | Rockville Montgomery Swim Club | 02/20/2026 | 2026 RMSC February Invitational | |
| 1980 | Ella Stiefel | 47.43 | 10 | BB Min | A: 42.79 (+4.64s | 9.8%) | Mecklenburg Swim Association | 03/07/2026 | 2026 MSA March Madness Invitational | |
| 1981 | Alexa Copa-Brzozowski | 47.43 | 8 | BB Min | A: 42.79 (+4.64s | 9.8%) | Excel Aquatics | 02/21/2026 | 2026 SES Region 1 8 And Under Championships | |
| 1982 | Maddy Walker | 47.44 | 10 | BB Min | A: 42.79 (+4.65s | 9.8%) | Spokane Sea Serpents | 11/21/2025 | 2025 Adam England Memorial Fall Splash | |
| 1983 | Emma Germe | 47.44 | 8 | BB Min | A: 42.79 (+4.65s | 9.8%) | Meadow | 11/01/2025 | Kati McDermott Memorial Fall Jamboree Invite | |
| 1984 | Whitney Agan | 47.44 | 11 | BB Min | A: 42.79 (+4.65s | 9.8%) | Arena Club Aquatics | 09/26/2025 | RAC First Splash 2025 | |
| 1985 | Alice Cahill | 47.44 | 9 | BB Min | A: 42.79 (+4.65s | 9.8%) | Hydra Aquatics | 11/14/2025 | ISCA Fall Classic Championship 2025 | |
| 1986 | Vida Reuscher | 47.44 | 10 | BB Min | A: 42.79 (+4.65s | 9.8%) | Lone Star Aquatic Club | 11/16/2025 | 2025 ST TXLA 10 U November Unclassified | |
| 1987 | Kaitlyn Mitchell | 47.44 | 8 | BB Min | A: 42.79 (+4.65s | 9.8%) | Fast Falcons | 02/28/2026 | 2026 Area 4 Spring Champs | |
| 1988 | Brooklyn Chatterton | 47.44 | 10 | BB Min | A: 42.79 (+4.65s | 9.8%) | Raleigh Swimming Association | 03/26/2026 | 2026 NCAC Spring Tar Heel States Copied | |
| 1989 | Liliya Strunk | 47.44 | 9 | BB Min | A: 42.79 (+4.65s | 9.8%) | Poseidon Swimming Inc | 03/21/2026 | NOVA Short Course Send Off 2026 | |
| 1990 | Lillyana Basil | 47.44 | 10 | BB Min | A: 42.79 (+4.65s | 9.8%) | Unattached | 04/15/2026 | 2026 ST NIST April Race Night | |
| 1991 | Arielle Zur | 47.44 | 9 | BB Min | A: 42.79 (+4.65s | 9.8%) | Long Island Express | 02/20/2026 | 2026 MR Metro Silver Central Champs WEST | |
| 1992 | Madison Kuhn | 47.45 | 10 | BB Min | A: 42.79 (+4.66s | 9.8%) | Ensworth Aquatics | 02/21/2026 | 2026 SES Region 1 8 And Under Championships | |
| 1993 | Evelyn Boucher | 47.45 | 10 | BB Min | A: 42.79 (+4.66s | 9.8%) | Cane Bay Family YMCA Krakens | 03/19/2026 | 2026 USRY Short Course Champs | |
| 1994 | Aimee Hamblett | 47.45 | 10 | BB Min | A: 42.79 (+4.66s | 9.8%) | Commonwealth Swimming | 06/26/2026 | 2026 NE CS Summer Classic | |
| 1995 | Norah Tarr | 47.45 | 9 | BB Min | A: 42.79 (+4.66s | 9.8%) | Rockville Montgomery Swim Club | 11/14/2025 | 2025 RMSC November Dual Meet | |
| 1996 | Layla Pratt | 47.46 | 10 | BB Min | A: 42.79 (+4.67s | 9.8%) | South Lyon Aquatics | 02/27/2026 | 2026 Junior Cup | |
| 1997 | Mary Brede | 47.46 | 10 | BB Min | A: 42.79 (+4.67s | 9.8%) | Egra Waves | 12/05/2025 | EGRA 2025 Winter Washout | |
| 1998 | Adelynn Zaker | 47.46 | 9 | BB Min | A: 42.79 (+4.67s | 9.8%) | Millard Aquatic Club | 02/20/2026 | 2026 MW Midwestern Age Group Short Course | |
| 1999 | Hadlie Heale | 47.46 | 9 | BB Min | A: 42.79 (+4.67s | 9.8%) | Atlantic Coast Athletic Club | 02/07/2026 | SW District 8 Under Championship | |
| 2000 | Molly Nightingale | 47.46 | 9 | BB Min | A: 42.79 (+4.67s | 9.8%) | Black Marlins Swim Team | 01/16/2026 | 2026 NE SAC Bronze Championships | |
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.