Swimmer profile
Jack Ethan Kozlowski
Male17-18WSY SwimmingMA · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2023–24
2024–25
2025–26
50 Free LCM
30.38
29.53
▲ 0.85
30.70
▼ 1.17
100 Free LCM
—
1:05.06
1:07.46
▼ 2.40
200 Free LCM
—
—
2:25.97
400 Free LCM
6:02.67
5:30.16
▲ 32.51
5:13.99
▲ 16.17
100 Back LCM
—
—
1:19.33
200 Back LCM
—
—
3:07.31
50 Breast LCM
43.03
39.54
▲ 3.49
—
100 Breast LCM
—
1:25.68
—
200 Breast LCM
—
3:12.24
—
50 Fly LCM
33.96
31.79
▲ 2.17
—
100 Fly LCM
—
1:15.09
1:13.65
▲ 1.44
Improvement<0.5s0.5–2s2–5s5s+Slower
📊 All Attempts by Event
Chronological history of every recorded swim. Click an event to expand its attempt list.