Swimmer profile
Cj Koslin
Female15-16Excel AquaticsSE · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2019–20
2020–21
2021–22
2023–24
2024–25
2025–26
50 Free SCY
54.52
45.77
▲ 8.75
42.59
▲ 3.18
34.27
▲ 8.32
29.74
▲ 4.53
25.98
▲ 3.76
100 Free SCY
1:54.77
1:49.48
▲ 5.29
1:42.53
▲ 6.95
1:21.50
▲ 21.03
1:04.95
▲ 16.55
55.99
▲ 8.96
200 Free SCY
—
—
—
3:05.33
—
2:10.23
▲ 55.10
500 Free SCY
—
—
—
—
6:54.38
5:48.43
▲ 65.95
1000 Free SCY
—
—
—
—
—
12:03.61
50 Back SCY
58.41
49.63
▲ 8.78
47.75
▲ 1.88
42.08
▲ 5.67
—
31.33
▲ 10.75
100 Back SCY
2:02.61
2:01.45
▲ 1.16
1:46.90
▲ 14.55
1:37.29
▲ 9.61
1:18.65
▲ 18.64
1:10.92
▲ 7.73
200 Back SCY
—
—
—
—
—
2:33.70
50 Breast SCY
57.22
54.74
▲ 2.48
49.45
▲ 5.29
41.34
▲ 8.11
—
33.65
▲ 7.69
100 Breast SCY
—
1:55.90
1:42.11
▲ 13.79
1:27.71
▲ 14.40
1:17.10
▲ 10.61
1:13.50
▲ 3.60
200 Breast SCY
—
—
—
3:02.81
2:46.23
▲ 16.58
—
50 Fly SCY
1:05.05
—
—
—
—
—
100 Fly SCY
—
—
—
—
1:34.51
—
100 IM SCY
2:21.41
1:48.57
▲ 32.84
1:43.70
▲ 4.87
1:34.47
▲ 9.23
—
—
200 IM SCY
—
—
—
3:14.20
2:46.10
▲ 28.10
2:37.42
▲ 8.68
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.