Swimmer profile
Willem van Riessen
Male11-12Delta Aquatic ClubMS · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2019–20
2021–22
2022–23
2025–26
50 Free SCY
1:59.61
1:00.28
▲ 59.33
49.55
▲ 10.73
—
35.72
▲ 13.83
100 Free SCY
—
—
2:00.31
1:54.66
▲ 5.65
1:24.30
▲ 30.36
25 Back SCY
—
—
24.11
—
—
50 Back SCY
—
1:01.92
56.69
▲ 5.23
—
45.60
▲ 11.09
100 IM SCY
—
—
—
—
1:46.01
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.