Swimmer profile
Koen Asper
Male17-18Sweetwater Aquatics TeamWY · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2019–20
2023–24
2024–25
2025–26
50 Free SCY
39.61
24.49
▲ 15.12
22.93
▲ 1.56
21.33
▲ 1.60
100 Free SCY
1:24.94
53.81
▲ 31.13
50.21
▲ 3.60
46.76
▲ 3.45
200 Free SCY
—
2:01.25
1:52.93
▲ 8.32
1:45.81
▲ 7.12
500 Free SCY
—
—
5:20.54
5:15.23
▲ 5.31
50 Back SCY
50.46
—
—
—
100 Back SCY
1:48.68
—
1:04.35
▲ 44.33
—
50 Breast SCY
46.81
—
—
27.89
▲ 18.92
100 Breast SCY
—
1:15.96
1:10.11
▲ 5.85
1:04.07
▲ 6.04
50 Fly SCY
—
—
—
24.70
100 Fly SCY
—
—
—
57.06
200 IM SCY
—
—
—
2:07.85
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.