Rancho San Dieguito 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 | Leif Chang | 48.30 | 10 | B Min | BB: 47.69 (+0.61s | 1.3%) | Rancho San Dieguito | 07/10/2026 | 2026 SI JBST All Ages Last Chance Meet | |
| 2 | Mingzuo Cheng | 50.00 | 10 | B Min | BB: 47.69 (+2.31s | 4.6%) | Rancho San Dieguito | 01/10/2026 | 2026 SI BAY 14U Rising Stars 3 | |
| 3 | Baden Brown | 50.85 | 9 | B Min | BB: 47.69 (+3.16s | 6.2%) | Rancho San Dieguito | 04/11/2026 | SI 2026 RSD All Ages BC Meet | |
| 4 | Ian Cho | 51.03 | 9 | B Min | BB: 47.69 (+3.34s | 6.5%) | Rancho San Dieguito | 01/31/2026 | 2026 SBA All Ages NTS Meet | |
| 5 | Preston Bao | 51.76 | 10 | B Min | BB: 47.69 (+4.07s | 7.9%) | Rancho San Dieguito | 10/11/2025 | 2025 SI RSD All Ages B C Meet | |
| 6 | Sebastian Boda | 58.99 | 9 | B: 53.39 (+5.60s | 9.5%) | Rancho San Dieguito | 08/02/2025 | 2025 SI WIND All Ages NTS Wrap Up Meet | ||
| 7 | Gabriel Mas | 1:00.23 | 9 | B: 53.39 (+6.84s | 11.4%) | Rancho San Dieguito | 05/04/2025 | 2025 SI FAST 14U NTS | ||
| 8 | Oliver Cannon | 1:01.34 | 8 | B: 53.39 (+7.95s | 13.0%) | Rancho San Dieguito | 06/13/2026 | 2026 SI ICAC 14U RISING STARS 2 | ||
| 9 | James McCloskey | 1:02.07 | 9 | B: 53.39 (+8.68s | 14.0%) | Rancho San Dieguito | 05/03/2026 | 2026 SI BAY 14U Rising Stars 1 | ||
| 10 | Andy Han | 1:04.78 | 9 | B: 53.39 (+11.39s | 17.6%) | Rancho San Dieguito | 03/21/2026 | 2026 SI CAST All Ages NTS Meet South | ||
| 11 | Ryan Do | 1:08.94 | 9 | B: 53.39 (+15.55s | 22.6%) | Rancho San Dieguito | 06/13/2026 | 2026 SI ICAC 14U RISING STARS 2 | ||
| 12 | Theodore Ho | 1:11.83 | 10 | B: 53.39 (+18.44s | 25.7%) | Rancho San Dieguito | 01/31/2026 | 2026 SBA All Ages NTS Meet | ||
| 13 | Elliot French | 1:13.77 | 9 | B: 53.39 (+20.38s | 27.6%) | Rancho San Dieguito | 02/21/2026 | 2026 SI JBST Age Group Champs Max | ||
| 14 | Preston Lee | 1:15.71 | 9 | B: 53.39 (+22.32s | 29.5%) | Rancho San Dieguito | 06/07/2025 | 2025 SI JBST Splash Dash Max | ||
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.