| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:35.58 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 100m Freestyle | 1:20.29 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 100m IM | 1:38.56 | 2025 DAL Sprint Meet | 2025-10-19 |
| 200m Breaststroke | 3:24.33 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 200m Freestyle | 2:48.92 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 200m IM | 3:15.61 | 2025 Candy Cane Invitational | 2025-12-12 |
| 400m Freestyle | 5:57.12 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 50m Backstroke | 46.28 | 2025 DAL Sprint Meet | 2025-10-19 |
| 50m Breaststroke | 47.46 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 50m Butterfly | 45.58 | 2025 DAL Sprint Meet | 2025-10-19 |
| 50m Freestyle | 37.53 | AA AGD & NT#4 NORTH | 2026-02-14 |
Velchev, Alexander's top personal bests include 100m Breaststroke (1:35.58), 100m Freestyle (1:20.29), 100m IM (1:38.56), 200m Breaststroke (3:24.33), 200m Freestyle (2:48.92).
Velchev, Alexander swims for Pictou County Mariners.
Velchev, Alexander has competed in 9 meets.