Swimmer profile
Preston Chang
Male15-16Empire KC Swim ClubMV · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
47.82
39.58
▲ 8.24
30.46
▲ 9.12
33.34
▼ 2.88
30.09
▲ 3.25
27.83
▲ 2.26
26.46
▲ 1.37
25.08
▲ 1.38
23.92
▲ 1.16
100 Free SCY
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1:28.53
1:17.69
▲ 10.84
1:12.73
▲ 4.96
1:10.01
▲ 2.72
1:00.67
▲ 9.34
57.80
▲ 2.87
54.16
▲ 3.64
51.70
▲ 2.46
200 Free SCY
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3:14.84
3:02.66
▲ 12.18
2:46.52
▲ 16.14
2:23.40
▲ 23.12
2:09.64
▲ 13.76
2:01.55
▲ 8.09
1:56.54
▲ 5.01
1:53.15
▲ 3.39
500 Free SCY
—
—
—
—
6:19.53
5:52.96
▲ 26.57
5:29.91
▲ 23.05
5:17.65
▲ 12.26
4:56.02
▲ 21.63
1000 Free SCY
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—
—
—
—
—
10:57.87
10:47.87
▲ 10.00
10:24.25
▲ 23.62
1650 Free SCY
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—
—
—
—
—
18:43.09
18:41.36
▲ 1.73
17:49.55
▲ 51.81
50 Back SCY
46.72
45.24
▲ 1.48
39.34
▲ 5.90
38.51
▲ 0.83
36.30
▲ 2.21
33.56
▲ 2.74
—
—
—
100 Back SCY
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1:34.50
1:25.23
▲ 9.27
1:22.93
▲ 2.30
1:17.65
▲ 5.28
1:11.69
▲ 5.96
1:06.29
▲ 5.40
1:03.33
▲ 2.96
1:01.79
▲ 1.54
200 Back SCY
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—
—
—
2:40.70
2:37.36
▲ 3.34
2:22.01
▲ 15.35
2:18.57
▲ 3.44
2:13.02
▲ 5.55
50 Breast SCY
56.88
51.34
▲ 5.54
44.66
▲ 6.68
43.48
▲ 1.18
39.53
▲ 3.95
35.39
▲ 4.14
—
—
31.41
▲ 3.98
100 Breast SCY
2:04.16
1:51.96
▲ 12.20
1:36.67
▲ 15.29
1:35.82
▲ 0.85
1:24.32
▲ 11.50
1:18.00
▲ 6.32
1:10.15
▲ 7.85
1:06.11
▲ 4.04
1:04.09
▲ 2.02
200 Breast SCY
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—
—
—
3:07.25
2:45.50
▲ 21.75
2:28.93
▲ 16.57
2:22.74
▲ 6.19
2:17.80
▲ 4.94
50 Fly SCY
1:00.38
47.87
▲ 12.51
44.41
▲ 3.46
41.09
▲ 3.32
39.20
▲ 1.89
32.15
▲ 7.05
—
27.05
▲ 5.10
27.73
▼ 0.68
100 Fly SCY
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—
1:38.42
1:29.95
▲ 8.47
1:26.51
▲ 3.44
1:11.20
▲ 15.31
1:04.35
▲ 6.85
1:01.69
▲ 2.66
58.08
▲ 3.61
200 Fly SCY
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—
—
—
—
2:34.75
2:18.34
▲ 16.41
2:17.12
▲ 1.22
2:08.40
▲ 8.72
100 IM SCY
1:47.76
1:37.18
▲ 10.58
1:26.62
▲ 10.56
1:23.77
▲ 2.85
1:16.66
▲ 7.11
1:11.28
▲ 5.38
—
1:01.85
▲ 9.43
1:01.83
▲ 0.02
200 IM SCY
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—
3:08.50
3:04.85
▲ 3.65
2:39.47
▲ 25.38
2:28.10
▲ 11.37
2:15.20
▲ 12.90
2:10.71
▲ 4.49
2:03.44
▲ 7.27
400 IM SCY
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—
—
—
—
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4:45.70
4:42.22
▲ 3.48
4:25.30
▲ 16.92
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.