Swimmer profile
Johan Ko
Male13-14Ace Swim TeamNJ · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2019–20
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
41.21
—
30.07
▲ 11.14
25.66
▲ 4.41
24.94
▲ 0.72
24.65
▲ 0.29
100 Free SCY
1:31.33
1:22.42
▲ 8.91
—
56.74
▲ 25.68
56.10
▲ 0.64
57.34
▼ 1.24
50 Back SCY
50.55
—
38.98
▲ 11.57
32.72
▲ 6.26
—
—
100 Back SCY
—
—
—
1:10.03
1:06.45
▲ 3.58
—
50 Breast SCY
—
44.19
—
33.60
▲ 10.59
32.33
▲ 1.27
31.62
▲ 0.71
100 Breast SCY
—
—
1:26.32
1:13.39
▲ 12.93
1:10.25
▲ 3.14
1:11.16
▼ 0.91
50 Fly SCY
—
—
—
30.64
—
28.15
▲ 2.49
100 Fly SCY
—
—
—
1:15.34
1:06.53
▲ 8.81
1:05.97
▲ 0.56
100 IM SCY
—
—
1:20.38
1:06.84
▲ 13.54
—
1:06.08
▲ 0.76
200 IM SCY
—
—
—
—
2:21.85
2:30.85
▼ 9.00
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.