Swimmer profile
Alex Koo
Male17-18FASTIN · 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
42.27
33.93
▲ 8.34
30.71
▲ 3.22
28.08
▲ 2.63
25.53
▲ 2.55
25.32
▲ 0.21
22.41
▲ 2.91
21.10
▲ 1.31
20.82
▲ 0.28
20.16
▲ 0.66
100 Free SCY
1:40.92
1:15.87
▲ 25.05
1:07.50
▲ 8.37
1:01.02
▲ 6.48
55.50
▲ 5.52
55.00
▲ 0.50
48.44
▲ 6.56
46.13
▲ 2.31
45.41
▲ 0.72
45.05
▲ 0.36
200 Free SCY
—
2:50.58
2:29.78
▲ 20.80
2:18.23
▲ 11.55
2:01.94
▲ 16.29
2:00.89
▲ 1.05
1:48.37
▲ 12.52
1:46.10
▲ 2.27
1:41.23
▲ 4.87
1:39.04
▲ 2.19
500 Free SCY
—
—
—
6:13.18
5:34.34
▲ 38.84
5:41.06
▼ 6.72
4:56.67
▲ 44.39
4:47.32
▲ 9.35
4:41.86
▲ 5.46
4:38.47
▲ 3.39
1000 Free SCY
—
—
—
—
11:50.86
11:16.02
▲ 34.84
—
10:36.90
▲ 39.12
—
—
1650 Free SCY
—
—
—
22:41.47
19:38.00
▲ 183.47
18:35.31
▲ 62.69
—
17:23.39
▲ 71.92
—
—
50 Back SCY
50.52
44.49
▲ 6.03
35.26
▲ 9.23
31.92
▲ 3.34
30.74
▲ 1.18
30.24
▲ 0.50
25.75
▲ 4.49
26.30
▼ 0.55
25.48
▲ 0.82
—
100 Back SCY
—
1:33.23
1:24.42
▲ 8.81
1:07.72
▲ 16.70
1:03.41
▲ 4.31
1:04.42
▼ 1.01
56.04
▲ 8.38
52.91
▲ 3.13
51.34
▲ 1.57
51.46
▼ 0.12
200 Back SCY
—
—
—
—
—
2:26.24
2:03.35
▲ 22.89
1:56.38
▲ 6.97
—
1:54.53
▲ 1.85
50 Breast SCY
1:09.87
1:05.00
▲ 4.87
50.37
▲ 14.63
42.87
▲ 7.50
36.47
▲ 6.40
34.53
▲ 1.94
—
—
30.05
▲ 4.48
—
100 Breast SCY
—
2:28.68
1:46.11
▲ 42.57
1:31.73
▲ 14.38
1:20.61
▲ 11.12
1:18.09
▲ 2.52
1:08.59
▲ 9.50
1:03.15
▲ 5.44
1:04.38
▼ 1.23
1:00.77
▲ 3.61
200 Breast SCY
—
—
—
—
—
—
2:28.50
2:17.08
▲ 11.42
2:21.81
▼ 4.73
—
50 Fly SCY
—
41.19
35.98
▲ 5.21
31.86
▲ 4.12
28.27
▲ 3.59
27.67
▲ 0.60
—
24.95
▲ 2.72
23.89
▲ 1.06
—
100 Fly SCY
—
1:40.24
1:22.86
▲ 17.38
1:07.65
▲ 15.21
1:02.31
▲ 5.34
1:00.80
▲ 1.51
57.91
▲ 2.89
51.77
▲ 6.14
49.18
▲ 2.59
48.15
▲ 1.03
200 Fly SCY
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—
—
—
—
2:22.33
2:12.03
▲ 10.30
1:58.93
▲ 13.10
1:49.37
▲ 9.56
1:50.43
▼ 1.06
100 IM SCY
2:00.94
1:41.80
▲ 19.14
—
—
1:07.39
▲ 34.41
1:05.04
▲ 2.35
—
—
—
—
200 IM SCY
—
3:37.04
2:49.71
▲ 47.33
2:32.25
▲ 17.46
2:16.83
▲ 15.42
2:14.97
▲ 1.86
2:10.92
▲ 4.05
2:00.99
▲ 9.93
1:57.80
▲ 3.19
1:52.75
▲ 5.05
400 IM SCY
—
—
—
5:51.85
5:01.44
▲ 50.41
4:50.97
▲ 10.47
4:39.76
▲ 11.21
4:18.30
▲ 21.46
4:04.92
▲ 13.38
4:02.97
▲ 1.95
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.