Swimmer profile
Jack Ethan Kozlowski
Male17-18WSY SwimmingMA · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free SCY
27.77
25.21
▲ 2.56
25.31
▼ 0.10
24.55
▲ 0.76
100 Free SCY
1:02.61
58.41
▲ 4.20
54.26
▲ 4.15
54.55
▼ 0.29
200 Free SCY
2:18.49
2:13.63
▲ 4.86
2:03.64
▲ 9.99
2:01.53
▲ 2.11
500 Free SCY
6:11.97
6:01.18
▲ 10.79
5:39.68
▲ 21.50
5:24.62
▲ 15.06
1000 Free SCY
—
—
—
11:26.08
100 Back SCY
1:15.95
1:11.45
▲ 4.50
1:05.00
▲ 6.45
1:03.25
▲ 1.75
200 Back SCY
2:44.43
—
2:39.04
▲ 5.39
2:25.13
▲ 13.91
100 Breast SCY
1:19.26
1:07.91
▲ 11.35
1:06.34
▲ 1.57
1:04.30
▲ 2.04
200 Breast SCY
2:53.87
2:35.06
▲ 18.81
2:30.49
▲ 4.57
2:34.56
▼ 4.07
100 Fly SCY
1:16.25
58.41
▲ 17.84
57.87
▲ 0.54
56.96
▲ 0.91
200 Fly SCY
—
2:35.79
2:22.63
▲ 13.16
2:16.56
▲ 6.07
100 IM SCY
1:11.36
—
—
—
200 IM SCY
2:37.10
2:25.64
▲ 11.46
2:17.06
▲ 8.58
2:10.64
▲ 6.42
400 IM SCY
—
5:07.82
5:00.58
▲ 7.24
4:52.90
▲ 7.68
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.