| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:06.04 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Butterfly | 1:02.25 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 100m Butterfly | 1:00.13 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m Freestyle | 54.05 | RHAC Fall Classic 2025 | 2025-10-24 |
| 100m IM | 59.77 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Backstroke | 2:15.99 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 200m Backstroke | 2:09.19 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 200m Breaststroke | 2:19.43 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 200m Butterfly | 2:20.17 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 200m Butterfly | 2:14.06 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m Freestyle | 2:03.14 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 200m Freestyle | 1:55.94 | 2025 RHAC Summer League | 2025-07-18 |
| 200m IM | 2:15.51 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 200m IM | 2:05.55 | 2025 MSSAC Open | 2025-12-19 |
| 400m Freestyle | 4:07.09 | 2025 MSSAC Open | 2025-12-19 |
| 400m IM | 4:53.45 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 400m IM | 4:32.53 | 2025 RHAC Summer League | 2025-07-18 |
| 50m Backstroke | 28.52 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Freestyle | 26.21 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 50m Freestyle | 24.97 | 2025 RHAC Summer League | 2025-07-18 |
| 800m Freestyle | 8:58.68 | RHAC Distance Duel 2025 | 2025-11-13 |
Diomin, Daniel's top personal bests include 100m Breaststroke (1:06.04), 100m Butterfly (1:02.25), 100m Butterfly (1:00.13), 100m Freestyle (54.05), 100m IM (59.77).
Diomin, Daniel swims for The Richmond Hill Aquatic Club.
Diomin, Daniel has competed in 9 meets.