Swimmer profile
William Ma
Male17-18King Aquatic ClubPNW · WESTERNCollege athlete · Nazareth UniversityD3
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
46.15
41.82
▲ 4.33
37.41
▲ 4.41
34.28
▲ 3.13
32.08
▲ 2.20
28.97
▲ 3.11
27.69
▲ 1.28
27.31
▲ 0.38
26.50
▲ 0.81
27.69
▼ 1.19
100 Free LCM
1:47.52
1:31.54
▲ 15.98
1:30.28
▲ 1.26
1:16.00
▲ 14.28
1:09.13
▲ 6.87
1:02.16
▲ 6.97
59.33
▲ 2.83
—
58.60
▲ 0.73
58.56
▲ 0.04
200 Free LCM
3:53.52
—
3:09.73
▲ 43.79
2:45.51
▲ 24.22
2:27.43
▲ 18.08
2:16.71
▲ 10.72
2:06.42
▲ 10.29
2:05.78
▲ 0.64
2:06.21
▼ 0.43
—
400 Free LCM
—
—
—
5:50.25
5:08.57
▲ 41.68
4:40.96
▲ 27.61
4:24.79
▲ 16.17
4:18.90
▲ 5.89
4:22.22
▼ 3.32
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800 Free LCM
—
—
—
—
—
9:28.43
9:11.62
▲ 16.81
—
—
—
1500 Free LCM
—
—
—
—
—
18:12.43
17:50.60
▲ 21.83
17:18.00
▲ 32.60
17:12.85
▲ 5.15
—
50 Back LCM
58.10
50.50
▲ 7.60
45.68
▲ 4.82
39.60
▲ 6.08
—
—
—
—
—
30.61
▲ 8.99
100 Back LCM
2:18.87
1:56.57
▲ 22.30
1:43.41
▲ 13.16
1:26.12
▲ 17.29
1:24.19
▲ 1.93
1:15.46
▲ 8.73
1:08.29
▲ 7.17
1:06.65
▲ 1.64
—
1:07.35
▼ 0.70
200 Back LCM
—
—
—
3:04.59
2:54.71
▲ 9.88
2:33.90
▲ 20.81
2:26.65
▲ 7.25
2:21.30
▲ 5.35
—
—
50 Breast LCM
1:05.68
56.69
▲ 8.99
51.02
▲ 5.67
42.58
▲ 8.44
—
35.91
▲ 6.67
—
—
31.28
▲ 4.63
31.68
▼ 0.40
100 Breast LCM
2:23.85
2:01.37
▲ 22.48
1:48.83
▲ 12.54
1:32.24
▲ 16.59
1:22.84
▲ 9.40
1:16.31
▲ 6.53
1:11.26
▲ 5.05
1:10.66
▲ 0.60
1:09.45
▲ 1.21
1:10.75
▼ 1.30
200 Breast LCM
—
—
—
3:22.85
2:53.84
▲ 29.01
2:39.69
▲ 14.15
2:32.27
▲ 7.42
2:33.81
▼ 1.54
2:31.77
▲ 2.04
2:35.23
▼ 3.46
50 Fly LCM
1:16.95
—
52.63
▲ 24.32
38.05
▲ 14.58
—
30.08
▲ 7.97
27.44
▲ 2.64
26.88
▲ 0.56
26.31
▲ 0.57
26.65
▼ 0.34
100 Fly LCM
—
—
—
—
1:13.34
1:04.99
▲ 8.35
1:00.20
▲ 4.79
58.33
▲ 1.87
57.78
▲ 0.55
59.06
▼ 1.28
200 Fly LCM
—
—
—
—
2:41.38
2:19.77
▲ 21.61
2:11.06
▲ 8.71
2:08.38
▲ 2.68
2:08.99
▼ 0.61
2:11.84
▼ 2.85
200 IM LCM
—
—
3:37.85
3:00.18
▲ 37.67
2:42.83
▲ 17.35
2:27.89
▲ 14.94
2:17.08
▲ 10.81
2:18.24
▼ 1.16
2:16.72
▲ 1.52
—
400 IM LCM
—
—
—
—
5:38.47
5:07.91
▲ 30.56
4:47.72
▲ 20.19
4:45.49
▲ 2.23
4:48.21
▼ 2.72
4:51.68
▼ 3.47
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.