Swimmer profile
Jeffrey Chang
Male17-18Evolution Racing ClubSCS · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
35.15
31.94
▲ 3.21
30.19
▲ 1.75
29.33
▲ 0.86
27.89
▲ 1.44
26.01
▲ 1.88
24.80
▲ 1.21
24.61
▲ 0.19
100 Free LCM
1:22.74
1:09.38
▲ 13.36
1:06.02
▲ 3.36
1:02.10
▲ 3.92
58.53
▲ 3.57
54.86
▲ 3.67
53.98
▲ 0.88
53.15
▲ 0.83
200 Free LCM
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2:34.55
2:23.47
▲ 11.08
2:17.19
▲ 6.28
2:08.28
▲ 8.91
1:59.11
▲ 9.17
1:58.77
▲ 0.34
1:58.29
▲ 0.48
400 Free LCM
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5:39.09
—
—
4:34.64
▲ 64.45
4:15.87
▲ 18.77
4:19.91
▼ 4.04
4:17.31
▲ 2.60
800 Free LCM
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—
—
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9:21.08
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—
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50 Back LCM
43.98
39.81
▲ 4.17
35.76
▲ 4.05
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—
—
—
—
100 Back LCM
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1:26.00
1:16.50
▲ 9.50
1:11.66
▲ 4.84
1:08.77
▲ 2.89
—
1:03.20
▲ 5.57
1:03.19
▲ 0.01
200 Back LCM
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—
2:40.14
2:31.04
▲ 9.10
2:27.46
▲ 3.58
2:20.80
▲ 6.66
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50 Breast LCM
48.20
43.53
▲ 4.67
41.76
▲ 1.77
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—
—
—
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100 Breast LCM
1:42.81
1:34.70
▲ 8.11
1:28.78
▲ 5.92
1:23.97
▲ 4.81
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200 Breast LCM
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—
—
3:00.67
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—
—
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50 Fly LCM
40.61
37.28
▲ 3.33
34.06
▲ 3.22
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—
—
—
27.13
▲ 6.93
100 Fly LCM
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1:23.96
1:16.87
▲ 7.09
1:10.93
▲ 5.94
1:09.83
▲ 1.10
1:03.91
▲ 5.92
1:05.16
▼ 1.25
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200 IM LCM
3:13.35
2:49.79
▲ 23.56
2:41.13
▲ 8.66
2:31.92
▲ 9.21
2:26.63
▲ 5.29
2:17.53
▲ 9.10
2:16.58
▲ 0.95
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400 IM LCM
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—
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5:19.41
5:07.41
▲ 12.00
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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.