Swimmer profile
William Siebrandt
MaleOpen / SeniorPitchfork AquaticsAZ · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2015–16
2016–17
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
36.59
31.15
▲ 5.44
28.63
▲ 2.52
28.39
▲ 0.24
26.38
▲ 2.01
26.72
▼ 0.34
26.36
▲ 0.36
26.37
▼ 0.01
26.63
▼ 0.26
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100 Free LCM
1:20.87
1:09.67
▲ 11.20
1:01.76
▲ 7.91
58.71
▲ 3.05
58.64
▲ 0.07
56.41
▲ 2.23
55.99
▲ 0.42
56.08
▼ 0.09
56.96
▼ 0.88
56.95
▲ 0.01
200 Free LCM
2:47.78
2:40.40
▲ 7.38
2:16.08
▲ 24.32
2:11.81
▲ 4.27
2:10.08
▲ 1.73
2:07.85
▲ 2.23
2:01.42
▲ 6.43
2:02.29
▼ 0.87
2:04.14
▼ 1.85
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400 Free LCM
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5:37.00
4:47.79
▲ 49.21
4:36.79
▲ 11.00
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4:22.41
▲ 14.38
4:24.54
▼ 2.13
4:21.83
▲ 2.71
4:22.12
▼ 0.29
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800 Free LCM
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—
9:59.00
9:45.30
▲ 13.70
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—
—
—
—
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50 Back LCM
49.72
—
38.69
▲ 11.03
36.66
▲ 2.03
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—
—
—
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100 Back LCM
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1:26.50
1:19.31
▲ 7.19
1:21.53
▼ 2.22
1:17.91
▲ 3.62
1:16.53
▲ 1.38
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—
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200 Back LCM
—
—
—
2:48.19
2:46.70
▲ 1.49
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—
—
—
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50 Breast LCM
45.85
—
38.93
▲ 6.92
40.14
▼ 1.21
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—
—
—
—
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100 Breast LCM
1:33.42
1:28.98
▲ 4.44
1:24.57
▲ 4.41
1:21.77
▲ 2.80
1:19.75
▲ 2.02
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1:23.12
▼ 3.37
1:21.04
▲ 2.08
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200 Breast LCM
3:17.03
3:12.91
▲ 4.12
2:55.72
▲ 17.19
3:00.28
▼ 4.56
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—
2:56.37
▲ 3.91
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50 Fly LCM
40.68
—
32.52
▲ 8.16
30.62
▲ 1.90
29.23
▲ 1.39
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27.18
▲ 2.05
27.40
▼ 0.22
27.83
▼ 0.43
26.80
▲ 1.03
100 Fly LCM
1:33.31
1:15.76
▲ 17.55
1:06.91
▲ 8.85
1:04.21
▲ 2.70
1:02.78
▲ 1.43
58.66
▲ 4.12
58.91
▼ 0.25
57.84
▲ 1.07
59.15
▼ 1.31
59.06
▲ 0.09
200 Fly LCM
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2:24.70
2:18.58
▲ 6.12
2:20.48
▼ 1.90
2:10.59
▲ 9.89
2:08.75
▲ 1.84
2:06.13
▲ 2.62
2:09.04
▼ 2.91
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200 IM LCM
3:06.91
2:47.00
▲ 19.91
2:32.29
▲ 14.71
2:27.82
▲ 4.47
2:28.99
▼ 1.17
2:24.43
▲ 4.56
2:25.82
▼ 1.39
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400 IM LCM
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6:02.36
5:29.42
▲ 32.94
5:23.07
▲ 6.35
5:14.10
▲ 8.97
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5:14.89
▼ 0.79
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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.