Swimmer profile
Ann Tjeerdsma
Female15-16Pierre Swim TeamSD · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2016–17
2017–18
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
55.70
48.20
▲ 7.50
39.68
▲ 8.52
37.62
▲ 2.06
34.85
▲ 2.77
31.17
▲ 3.68
29.71
▲ 1.46
29.30
▲ 0.41
28.51
▲ 0.79
28.77
▼ 0.26
100 Free SCY
—
2:03.60
1:32.80
▲ 30.80
1:27.16
▲ 5.64
1:18.73
▲ 8.43
1:07.79
▲ 10.94
1:05.13
▲ 2.66
1:04.41
▲ 0.72
1:01.87
▲ 2.54
1:01.76
▲ 0.11
200 Free SCY
—
—
3:20.53
3:11.96
▲ 8.57
2:47.78
▲ 24.18
2:27.43
▲ 20.35
2:21.16
▲ 6.27
2:17.94
▲ 3.22
2:16.16
▲ 1.78
2:12.43
▲ 3.73
500 Free SCY
—
—
—
—
—
7:11.10
6:33.97
▲ 37.13
6:24.21
▲ 9.76
6:06.34
▲ 17.87
6:06.69
▼ 0.35
1000 Free SCY
—
—
—
—
—
—
—
—
13:30.90
12:54.21
▲ 36.69
1650 Free SCY
—
—
—
—
—
—
—
—
21:49.89
21:05.33
▲ 44.56
50 Back SCY
54.39
51.41
▲ 2.98
45.37
▲ 6.04
42.00
▲ 3.37
40.56
▲ 1.44
35.55
▲ 5.01
35.88
▼ 0.33
33.42
▲ 2.46
34.36
▼ 0.94
33.27
▲ 1.09
100 Back SCY
—
—
1:41.18
1:32.09
▲ 9.09
1:26.61
▲ 5.48
1:15.70
▲ 10.91
1:14.92
▲ 0.78
1:11.65
▲ 3.27
1:09.81
▲ 1.84
1:11.48
▼ 1.67
200 Back SCY
—
—
—
—
—
—
2:38.72
2:37.35
▲ 1.37
2:28.76
▲ 8.59
2:34.04
▼ 5.28
50 Breast SCY
—
1:23.73
54.78
▲ 28.95
50.35
▲ 4.43
45.91
▲ 4.44
—
—
—
—
39.14
▲ 6.77
100 Breast SCY
—
—
1:52.83
1:46.51
▲ 6.32
—
1:34.79
▲ 11.72
1:29.24
▲ 5.55
1:27.67
▲ 1.57
—
1:25.59
▲ 2.08
200 Breast SCY
—
—
—
—
—
—
—
—
3:08.38
—
50 Fly SCY
—
—
47.36
45.76
▲ 1.60
41.07
▲ 4.69
37.89
▲ 3.18
—
—
—
31.51
▲ 6.38
100 Fly SCY
—
—
—
—
—
1:30.62
1:24.29
▲ 6.33
1:22.07
▲ 2.22
1:18.72
▲ 3.35
1:16.98
▲ 1.74
100 IM SCY
—
—
1:37.78
1:33.46
▲ 4.32
1:23.75
▲ 9.71
1:17.60
▲ 6.15
1:16.67
▲ 0.93
1:14.65
▲ 2.02
1:13.35
▲ 1.30
1:12.82
▲ 0.53
200 IM SCY
—
—
—
—
—
2:46.35
2:40.61
▲ 5.74
2:40.94
▼ 0.33
2:38.97
▲ 1.97
2:37.99
▲ 0.98
400 IM SCY
—
—
—
—
—
—
—
5:53.00
5:43.22
▲ 9.78
5:49.83
▼ 6.61
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.