| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:27.59 | MAC Rising Star #2 | 2025-05-30 |
| 100m Breaststroke | 1:24.32 | 2025 Age Group International SC | 2025-11-27 |
| 100m Butterfly | 1:21.24 | MAC Rising Star #2 | 2025-05-30 |
| 100m Butterfly | 1:18.12 | 2025 Age Group International SC | 2025-11-27 |
| 100m Freestyle | 1:04.15 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 100m Freestyle | 1:02.80 | MAC Jingle Bell | 2025-12-12 |
| 100m IM | 1:13.82 | MAC Jingle Bell | 2025-12-12 |
| 200m Backstroke | 2:47.33 | Hall of Fame | 2025-10-18 |
| 200m Breaststroke | 3:18.42 | MAC Rising Star #2 | 2025-05-30 |
| 200m Breaststroke | 3:13.85 | MAC Jingle Bell | 2025-12-12 |
| 200m Freestyle | 2:27.96 | MAC Rising Star #2 | 2025-05-30 |
| 200m Freestyle | 2:17.61 | Wilmot Aces Spring Classic 2026 | 2026-03-13 |
| 200m IM | 2:54.59 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 200m IM | 2:47.84 | Hall of Fame | 2025-10-18 |
| 400m Freestyle | 5:01.98 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 400m Freestyle | 4:52.12 | MAC Jingle Bell | 2025-12-12 |
| 400m IM | 6:01.60 | MAC Jingle Bell | 2025-12-12 |
| 50m Backstroke | 37.68 | ESWIM New Year's Cup 2026 | 2026-01-09 |
| 50m Breaststroke | 37.45 | MAC Jingle Bell | 2025-12-12 |
| 50m Butterfly | 32.93 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Butterfly | 32.27 | Wilmot Aces Spring Classic 2026 | 2026-03-13 |
| 50m Freestyle | 30.07 | ESWIM New Year's Cup 2026 | 2026-01-09 |
| 50m Freestyle | 28.33 | MAC Jingle Bell | 2025-12-12 |
| 800m Freestyle | 10:30.87 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
Berezenskyi, Mark's top personal bests include 100m Breaststroke (1:27.59), 100m Breaststroke (1:24.32), 100m Butterfly (1:21.24), 100m Butterfly (1:18.12), 100m Freestyle (1:04.15).
Berezenskyi, Mark swims for RocketSwim.
Berezenskyi, Mark has competed in 7 meets.