Swimmer profile
Koki Yamamoto
Male15-16Dads Club Swim TeamGU · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
31.90
28.71
▲ 3.19
28.27
▲ 0.44
27.43
▲ 0.84
100 Free LCM
1:10.99
1:02.47
▲ 8.52
59.82
▲ 2.65
58.34
▲ 1.48
200 Free LCM
2:50.53
2:12.49
▲ 38.04
2:08.71
▲ 3.78
2:09.62
▼ 0.91
400 Free LCM
5:49.69
4:54.95
▲ 54.74
4:32.29
▲ 22.66
4:36.83
▼ 4.54
50 Back LCM
42.56
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100 Back LCM
1:28.46
1:15.20
▲ 13.26
—
1:14.61
▲ 0.59
200 Back LCM
3:12.95
2:40.36
▲ 32.59
2:28.94
▲ 11.42
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50 Breast LCM
43.21
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—
—
100 Breast LCM
1:34.06
1:14.25
▲ 19.81
1:07.42
▲ 6.83
1:09.85
▼ 2.43
200 Breast LCM
—
2:44.43
2:28.54
▲ 15.89
2:37.29
▼ 8.75
50 Fly LCM
37.08
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—
—
100 Fly LCM
1:24.16
1:05.10
▲ 19.06
1:02.63
▲ 2.47
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200 Fly LCM
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—
2:14.29
2:30.04
▼ 15.75
200 IM LCM
2:59.56
2:30.23
▲ 29.33
2:17.84
▲ 12.39
2:22.26
▼ 4.42
400 IM LCM
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4:52.84
5:09.09
▼ 16.25
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.