Sioux Falls Swim Team Boys 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 | Gavin Mahrous | 41.03 | 9 | A Min | AA: 40.19 (+0.84s | 2.0%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | |
| 2 | Marcus Pass | 43.24 | 9 | BB Min | A: 42.09 (+1.15s | 2.7%) | Sioux Falls Swim Team | 10/25/2025 | SD SFST Swim Series Meet #2 | |
| 3 | Ashton VanKeulen | 46.52 | 9 | BB Min | A: 42.09 (+4.43s | 9.5%) | Sioux Falls Swim Team | 02/06/2026 | 2026 Qualifying Meet | |
| 4 | Isaac Sabers | 49.87 | 9 | B Min | BB: 47.69 (+2.18s | 4.4%) | Sioux Falls Swim Team | 02/21/2025 | 2025 12 U Short Course State A Championship | |
| 5 | Jackson Thum | 51.46 | 10 | B Min | BB: 47.69 (+3.77s | 7.3%) | Sioux Falls Swim Team | 01/02/2026 | SFST Intrasquad 1 2 26 | |
| 6 | Michael Callahan | 52.17 | 10 | B Min | BB: 47.69 (+4.48s | 8.6%) | Sioux Falls Swim Team | 01/02/2026 | SFST Intrasquad 1 2 26 | |
| 7 | Austin Headley | 53.15 | 9 | B Min | BB: 47.69 (+5.46s | 10.3%) | Sioux Falls Swim Team | 11/15/2025 | 2025 SD YST Charity Invite | |
| 8 | Evan Zuercher | 54.83 | 10 | B: 53.39 (+1.44s | 2.6%) | Sioux Falls Swim Team | 12/13/2025 | VAST Winter Invitational | ||
| 9 | Gabriel Ashton | 56.78 | 10 | B: 53.39 (+3.39s | 6.0%) | Sioux Falls Swim Team | 10/25/2025 | SD SFST Swim Series Meet #2 | ||
| 10 | Oliver Ollerton | 57.16 | 8 | B: 53.39 (+3.77s | 6.6%) | Sioux Falls Swim Team | 01/05/2024 | 2024 SD SFST January Jamboree 05Jan2024 Sioux Falls Swim Team | ||
| 11 | Jeremiah Manning | 58.14 | 10 | B: 53.39 (+4.75s | 8.2%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 12 | Greyson Schafer | 58.53 | 10 | B: 53.39 (+5.14s | 8.8%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 13 | Patrick Velgersdyk | 59.82 | 10 | B: 53.39 (+6.43s | 10.7%) | Sioux Falls Swim Team | 01/02/2026 | SFST Intrasquad 1 2 26 | ||
| 14 | Henry Whalen | 59.89 | 9 | B: 53.39 (+6.50s | 10.9%) | Sioux Falls Swim Team | 01/02/2026 | SFST Intrasquad 1 2 26 | ||
| 15 | Gunnar Syverson | 1:02.20 | 9 | B: 53.39 (+8.81s | 14.2%) | Sioux Falls Swim Team | 02/13/2026 | 2026 SD Short Course Rising Stars | ||
| 16 | Layton Boots | 1:02.23 | 8 | B: 53.39 (+8.84s | 14.2%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 17 | Owen Smith | 1:02.63 | 10 | B: 53.39 (+9.24s | 14.8%) | Sioux Falls Swim Team | 02/06/2026 | 2026 Qualifying Meet | ||
| 18 | Everett Ham | 1:08.03 | 8 | B: 53.39 (+14.64s | 21.5%) | Sioux Falls Swim Team | 01/24/2025 | SFST SD 2025 January Invite | ||
| 19 | Emmett Fredericksen | 1:09.68 | 9 | B: 53.39 (+16.29s | 23.4%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 20 | Theodore Hall | 1:10.32 | 8 | B: 53.39 (+16.93s | 24.1%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 21 | Rowan Otis | 1:11.69 | 9 | B: 53.39 (+18.30s | 25.5%) | Sioux Falls Swim Team | 11/15/2025 | 2025 SD YST Charity Invite | ||
| 22 | Lincoln VanKeulen | 1:17.83 | 7 | B: 53.39 (+24.44s | 31.4%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
| 23 | Clayton Ulrich | 1:20.83 | 7 | B: 53.39 (+27.44s | 33.9%) | Sioux Falls Swim Team | 01/23/2026 | SFST SD 2026 January Invite | ||
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.