COSA Swimming Boys 11-12 50 M Back
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 | Robert Marrufo | 37.83 | 12 | BB Min | A: 37.69 (+0.14s | 0.4%) | Unattached | 05/15/2026 | 2026 CO ACES Spring Invite | |
| 2 | Henry Brehm | 39.41 | 12 | BB Min | A: 37.69 (+1.72s | 4.4%) | COSA Swimming | 05/15/2026 | 2026 CO NJ Ken Kelley Invite | |
| 3 | William Bruce | 40.48 | 12 | BB Min | A: 37.69 (+2.79s | 6.9%) | COSA Swimming | 06/19/2025 | 2025 CO ACES Summer Invite | |
| 4 | Finn Liebers | 41.65 | 11 | B Min | BB: 41.09 (+0.56s | 1.3%) | COSA Swimming | 07/11/2026 | 2026 CO SOCO LC Championship Last Chance | |
| 5 | Nolan Endres | 44.21 | 11 | B Min | BB: 41.09 (+3.12s | 7.1%) | COSA Swimming | 06/19/2025 | 2025 CO ACES Summer Invite | |
| 6 | Noah Hussey | 46.26 | 11 | B: 44.49 (+1.77s | 3.8%) | COSA Swimming | 07/11/2026 | 2026 CO SOCO LC Championship Last Chance | ||
| 7 | Desmond Hardy | 48.21 | 11 | B: 44.49 (+3.72s | 7.7%) | Rocky Mountain Rapids | 07/25/2025 | 2025 CO CSI Age Group Championships | ||
| 8 | Preston Rutter | 49.39 | 11 | B: 44.49 (+4.90s | 9.9%) | COSA Swimming | 04/26/2025 | 2025 CO COSA Spring LC Kick Off | ||
| 9 | Merrick Decker | 50.28 | 12 | B: 44.49 (+5.79s | 11.5%) | COSA Swimming | 07/11/2026 | 2026 CO SOCO LC Championship Last Chance | ||
| 10 | Viaan Pervala | 56.61 | 11 | B: 44.49 (+12.12s | 21.4%) | COSA Swimming | 05/15/2026 | 2026 CO NJ Ken Kelley Invite | ||
| 11 | Aryan Robin | 1:01.01 | 11 | B: 44.49 (+16.52s | 27.1%) | COSA Swimming | 07/11/2026 | 2026 CO SOCO LC Championship Last Chance | ||
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.