Swimmer profile
Yuki Hayashi
MaleOpen / SeniorNeptune SwimmingPC · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2014–15
2015–16
2016–17
2017–18
2018–19
2021–22
2022–23
2023–24
2024–25
50 Free LCM
40.01
35.43
▲ 4.58
31.30
▲ 4.13
29.16
▲ 2.14
27.30
▲ 1.86
25.64
▲ 1.66
—
25.08
▲ 0.56
24.97
▲ 0.11
100 Free LCM
1:33.57
1:18.62
▲ 14.95
1:08.07
▲ 10.55
1:03.65
▲ 4.42
59.28
▲ 4.37
56.39
▲ 2.89
56.16
▲ 0.23
56.25
▼ 0.09
55.02
▲ 1.23
200 Free LCM
—
2:53.31
2:25.72
▲ 27.59
2:17.81
▲ 7.91
2:09.80
▲ 8.01
2:02.55
▲ 7.25
2:03.05
▼ 0.50
2:01.16
▲ 1.89
—
400 Free LCM
—
—
—
4:51.10
4:32.88
▲ 18.22
—
4:27.10
▲ 5.78
—
—
1500 Free LCM
—
—
—
—
—
—
17:48.04
—
—
50 Back LCM
50.85
45.34
▲ 5.51
38.96
▲ 6.38
35.07
▲ 3.89
33.58
▲ 1.49
—
—
28.81
▲ 4.77
28.09
▲ 0.72
100 Back LCM
1:49.48
—
1:25.30
▲ 24.18
1:13.84
▲ 11.46
1:06.87
▲ 6.97
1:03.75
▲ 3.12
1:01.76
▲ 1.99
59.38
▲ 2.38
59.07
▲ 0.31
200 Back LCM
—
—
—
2:32.56
2:23.71
▲ 8.85
2:17.30
▲ 6.41
2:13.82
▲ 3.48
2:09.35
▲ 4.47
2:08.68
▲ 0.67
50 Breast LCM
59.48
47.75
▲ 11.73
42.49
▲ 5.26
40.55
▲ 1.94
—
—
—
—
—
100 Breast LCM
2:10.80
1:43.49
▲ 27.31
1:31.48
▲ 12.01
1:27.63
▲ 3.85
—
1:18.53
▲ 9.10
—
—
—
200 Breast LCM
—
—
3:16.62
—
—
—
—
—
—
50 Fly LCM
—
39.80
37.36
▲ 2.44
35.30
▲ 2.06
32.86
▲ 2.44
—
—
—
—
100 Fly LCM
—
1:35.78
1:25.29
▲ 10.49
—
1:15.25
▲ 10.04
1:01.10
▲ 14.15
58.99
▲ 2.11
58.63
▲ 0.36
57.87
▲ 0.76
200 Fly LCM
—
—
—
—
—
—
2:12.97
2:13.08
▼ 0.11
2:07.74
▲ 5.34
200 IM LCM
—
3:10.89
2:50.38
▲ 20.51
2:42.25
▲ 8.13
—
2:16.97
▲ 25.28
2:13.63
▲ 3.34
2:16.19
▼ 2.56
2:10.17
▲ 6.02
400 IM LCM
—
—
—
5:43.80
—
5:10.20
▲ 33.60
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—
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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.