Swimmer profile
Johan Ko
Male13-14Ace Swim TeamNJ · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
35.11
—
—
28.74
▲ 6.37
28.19
▲ 0.55
100 Free LCM
1:26.57
—
1:05.82
▲ 20.75
—
—
200 Free LCM
—
—
2:31.11
—
—
50 Back LCM
50.20
—
37.18
▲ 13.02
—
34.37
▲ 2.81
100 Back LCM
—
—
1:20.31
—
—
50 Breast LCM
—
—
38.14
—
—
100 Breast LCM
1:43.68
1:38.96
▲ 4.72
1:26.51
▲ 12.45
—
1:27.12
▼ 0.61
50 Fly LCM
—
—
34.10
—
—
200 IM LCM
3:43.44
—
2:49.77
▲ 53.67
—
—
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.