Swimmer profile
Jeffrey Chang
Male17-18Evolution Racing ClubSCS · WESTERN
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
31.84
29.22
▲ 2.62
27.96
▲ 1.26
26.48
▲ 1.48
26.02
▲ 0.46
24.79
▲ 1.23
22.78
▲ 2.01
22.30
▲ 0.48
21.57
▲ 0.73
100 Free SCY
1:11.15
1:03.01
▲ 8.14
1:01.00
▲ 2.01
56.96
▲ 4.04
56.06
▲ 0.90
53.65
▲ 2.41
48.92
▲ 4.73
47.67
▲ 1.25
45.56
▲ 2.11
200 Free SCY
2:37.63
2:17.12
▲ 20.51
2:16.98
▲ 0.14
2:02.38
▲ 14.60
2:01.83
▲ 0.55
1:56.63
▲ 5.20
1:45.00
▲ 11.63
1:42.33
▲ 2.67
1:39.34
▲ 2.99
500 Free SCY
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6:56.46
5:59.40
▲ 57.06
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5:27.93
▲ 31.47
5:08.80
▲ 19.13
4:44.12
▲ 24.68
4:41.04
▲ 3.08
4:41.71
▼ 0.67
1000 Free SCY
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—
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10:04.77
50 Back SCY
38.34
38.00
▲ 0.34
34.28
▲ 3.72
31.06
▲ 3.22
29.88
▲ 1.18
29.09
▲ 0.79
26.52
▲ 2.57
27.31
▼ 0.79
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100 Back SCY
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1:19.61
1:11.76
▲ 7.85
1:05.30
▲ 6.46
1:02.77
▲ 2.53
1:01.21
▲ 1.56
57.05
▲ 4.16
55.87
▲ 1.18
55.43
▲ 0.44
200 Back SCY
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2:16.79
2:09.57
▲ 7.22
2:03.95
▲ 5.62
2:02.18
▲ 1.77
1:59.74
▲ 2.44
50 Breast SCY
43.03
40.26
▲ 2.77
37.73
▲ 2.53
34.42
▲ 3.31
33.62
▲ 0.80
—
31.37
▲ 2.25
30.74
▲ 0.63
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100 Breast SCY
1:35.58
1:28.28
▲ 7.30
1:20.76
▲ 7.52
1:15.23
▲ 5.53
1:10.18
▲ 5.05
1:09.01
▲ 1.17
1:04.16
▲ 4.85
1:04.21
▼ 0.05
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200 Breast SCY
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—
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2:31.21
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2:13.74
▲ 17.47
2:27.41
▼ 13.67
50 Fly SCY
36.02
33.42
▲ 2.60
30.49
▲ 2.93
29.93
▲ 0.56
29.08
▲ 0.85
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26.19
▲ 2.89
26.05
▲ 0.14
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100 Fly SCY
1:23.34
1:17.40
▲ 5.94
1:08.63
▲ 8.77
1:05.29
▲ 3.34
1:03.91
▲ 1.38
1:00.70
▲ 3.21
55.45
▲ 5.25
55.12
▲ 0.33
52.95
▲ 2.17
200 Fly SCY
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2:17.66
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2:03.67
▲ 13.99
100 IM SCY
1:19.03
1:14.28
▲ 4.75
1:09.80
▲ 4.48
1:05.97
▲ 3.83
1:03.50
▲ 2.47
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59.28
▲ 4.22
57.65
▲ 1.63
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200 IM SCY
2:52.92
2:34.68
▲ 18.24
2:28.51
▲ 6.17
2:18.34
▲ 10.17
2:14.61
▲ 3.73
2:08.92
▲ 5.69
1:59.12
▲ 9.80
1:58.13
▲ 0.99
1:55.44
▲ 2.69
400 IM SCY
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4:58.53
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4:33.08
▲ 25.45
4:19.82
▲ 13.26
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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.