Swimmer profile
David Grunzke
Male17-18AquaStormND · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2016–17
2018–19
2020–21
2024–25
2025–26
50 Free LCM
46.64
44.24
▲ 2.40
39.19
▲ 5.05
28.72
▲ 10.47
—
100 Free LCM
1:53.64
1:43.27
▲ 10.37
—
1:06.31
▲ 36.96
1:06.90
▼ 0.59
200 Free LCM
—
—
—
2:21.16
—
50 Back LCM
1:01.25
47.06
▲ 14.19
46.56
▲ 0.50
34.79
▲ 11.77
35.19
▼ 0.40
100 Back LCM
—
1:45.17
1:39.82
▲ 5.35
1:10.56
▲ 29.26
1:15.85
▼ 5.29
200 Back LCM
—
4:00.01
—
—
—
50 Fly LCM
1:01.99
55.70
▲ 6.29
47.88
▲ 7.82
30.16
▲ 17.72
—
100 Fly LCM
—
—
—
1:15.80
—
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.