Swimmer profile
William Yu
Male15-16Crimson AquaticsNE · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2016–17
2017–18
2018–19
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
45.67
41.94
▲ 3.73
38.84
▲ 3.10
31.88
▲ 6.96
30.47
▲ 1.41
30.15
▲ 0.32
29.55
▲ 0.60
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100 Free LCM
1:48.54
1:41.02
▲ 7.52
1:27.92
▲ 13.10
1:11.20
▲ 16.72
1:08.86
▲ 2.34
1:07.30
▲ 1.56
1:03.96
▲ 3.34
1:05.61
▼ 1.65
200 Free LCM
—
—
—
—
—
2:33.01
2:31.21
▲ 1.80
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50 Back LCM
58.72
50.72
▲ 8.00
46.50
▲ 4.22
38.35
▲ 8.15
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—
—
—
100 Back LCM
2:10.81
1:54.57
▲ 16.24
1:40.14
▲ 14.43
—
1:17.09
▲ 23.05
—
1:13.72
▲ 3.37
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200 Back LCM
—
—
—
—
2:48.76
2:46.29
▲ 2.47
2:47.54
▼ 1.25
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50 Breast LCM
1:00.64
1:02.15
▼ 1.51
49.71
▲ 12.44
41.47
▲ 8.24
—
—
36.54
▲ 4.93
34.27
▲ 2.27
100 Breast LCM
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2:01.53
1:50.68
▲ 10.85
1:32.12
▲ 18.56
1:24.22
▲ 7.90
1:22.06
▲ 2.16
1:17.00
▲ 5.06
1:18.32
▼ 1.32
200 Breast LCM
—
—
—
3:24.04
3:08.13
▲ 15.91
—
2:56.80
▲ 11.33
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50 Fly LCM
—
—
51.15
—
—
—
—
—
100 Fly LCM
—
—
1:58.85
1:28.30
▲ 30.55
1:18.03
▲ 10.27
—
—
1:10.51
▲ 7.52
200 IM LCM
—
—
—
2:55.14
2:47.88
▲ 7.26
—
2:33.35
▲ 14.53
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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.