Tollefson Swimming Girls 10 & under 50 Y Breast
These rankings show the swimmers' placement within their swim team.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Mackenzie O'Brien | 37.22 | 10 | AAA Min | AAAA: 36.89 (+0.33s | 0.9%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 2 | Isa Rubio | 38.36 | 11 | AAA Min | AAAA: 36.89 (+1.47s | 3.8%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 3 | Serena Shaukat | 43.14 | 11 | BB Min | A: 42.79 (+0.35s | 0.8%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 4 | Josephine Mitchell | 44.80 | 10 | BB Min | A: 42.79 (+2.01s | 4.5%) | Tollefson Swimming | 11/14/2025 | ISCA Fall Classic Championship 2025 | |
| 5 | Petra Gustafson | 46.31 | 10 | BB Min | A: 42.79 (+3.52s | 7.6%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 6 | Elizabeth Park | 46.97 | 9 | BB Min | A: 42.79 (+4.18s | 8.9%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | |
| 7 | Caroline Tucker | 47.10 | 10 | BB Min | A: 42.79 (+4.31s | 9.2%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | |
| 8 | Eden Neal | 47.17 | 9 | BB Min | A: 42.79 (+4.38s | 9.3%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 9 | Audrey Wade | 47.21 | 10 | BB Min | A: 42.79 (+4.42s | 9.4%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | |
| 10 | Chloe Conradi | 48.38 | 9 | BB Min | A: 42.79 (+5.59s | 11.6%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 11 | Isabella Bustios | 49.06 | 10 | B Min | BB: 48.69 (+0.37s | 0.8%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 12 | Emma Cronin | 49.70 | 9 | B Min | BB: 48.69 (+1.01s | 2.0%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 13 | Kaia Dasika | 50.57 | 10 | B Min | BB: 48.69 (+1.88s | 3.7%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | |
| 14 | Ruth Deininger | 51.47 | 10 | B Min | BB: 48.69 (+2.78s | 5.4%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 15 | Chloe Chiang | 51.82 | 9 | B Min | BB: 48.69 (+3.13s | 6.0%) | Tollefson Swimming | 12/04/2025 | 2025 PV Turkey Claus Showdown | |
| 16 | Isabella Benedetti | 51.93 | 9 | B Min | BB: 48.69 (+3.24s | 6.2%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 17 | Caroline Davis | 52.24 | 9 | B Min | BB: 48.69 (+3.55s | 6.8%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | |
| 18 | Lena Reiter | 52.64 | 9 | B Min | BB: 48.69 (+3.95s | 7.5%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | |
| 19 | Aadhya Karki | 53.77 | 9 | B Min | BB: 48.69 (+5.08s | 9.4%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | |
| 20 | Noor Seitz | 54.29 | 8 | B Min | BB: 48.69 (+5.60s | 10.3%) | Tollefson Swimming | 12/06/2025 | 2025 Reindeer Mini Meet | |
| 21 | Susan Alvarado | 54.46 | 9 | B Min | BB: 48.69 (+5.77s | 10.6%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | |
| 22 | Anusha Patel | 54.61 | 10 | B: 54.59 (+0.02s | 0.0%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | ||
| 23 | Khitiya Kuo | 55.33 | 9 | B: 54.59 (+0.74s | 1.3%) | Tollefson Swimming | 02/27/2026 | 2026 Cherry Blossom Champs | ||
| 24 | Mariana Sherwood | 56.02 | 10 | B: 54.59 (+1.43s | 2.6%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | ||
| 25 | Eloise Moon | 56.37 | 9 | B: 54.59 (+1.78s | 3.2%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | ||
| 26 | Caroline Smith | 57.74 | 9 | B: 54.59 (+3.15s | 5.5%) | Tollefson Swimming | 12/04/2025 | 2025 PV Turkey Claus Showdown | ||
| 27 | Sabrina Berdizoda | 58.62 | 9 | B: 54.59 (+4.03s | 6.9%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | ||
| 28 | Isabelle Demma | 58.73 | 9 | B: 54.59 (+4.14s | 7.0%) | Tollefson Swimming | 10/10/2025 | 2025 PV October Open Fairland | ||
| 29 | Leila Bannister | 1:00.29 | 9 | B: 54.59 (+5.70s | 9.5%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | ||
| 30 | Eleanor Segal | 1:01.00 | 9 | B: 54.59 (+6.41s | 10.5%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | ||
| 31 | Nora Cole | 1:01.51 | 9 | B: 54.59 (+6.92s | 11.3%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | ||
| 32 | Elizabeth Shanahan | 1:02.41 | 10 | B: 54.59 (+7.82s | 12.5%) | Tollefson Swimming | 11/14/2025 | 2025PV November Open Fairland | ||
| 33 | Angelina Yu | 1:02.41 | 8 | B: 54.59 (+7.82s | 12.5%) | Tollefson Swimming | 12/06/2025 | 2025 Reindeer Mini Meet | ||
| 34 | Louise Fleming | 1:03.42 | 9 | B: 54.59 (+8.83s | 13.9%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | ||
| 35 | Francesca Woodbury | 1:04.28 | 10 | B: 54.59 (+9.69s | 15.1%) | Tollefson Swimming | 02/01/2026 | 2026 Little Blue Penguin Pentathlon | ||
| 36 | Maya Sood | 1:07.44 | 9 | B: 54.59 (+12.85s | 19.1%) | Tollefson Swimming | 01/17/2026 | PVS January Open 2026 Fairland | ||
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.