Swimmer profile
Isaac Zhang
Male15-16Waterloo SwimmingST · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
—
39.15
36.75
▲ 2.40
—
28.80
▲ 7.95
25.83
▲ 2.97
24.30
▲ 1.53
24.52
▼ 0.22
100 Free SCY
1:45.26
1:27.04
▲ 18.22
1:20.52
▲ 6.52
1:13.83
▲ 6.69
1:03.23
▲ 10.60
56.20
▲ 7.03
53.34
▲ 2.86
52.80
▲ 0.54
200 Free SCY
—
—
—
—
—
2:04.37
2:00.36
▲ 4.01
—
500 Free SCY
—
—
—
—
6:27.48
—
—
—
50 Back SCY
50.45
43.23
▲ 7.22
41.73
▲ 1.50
35.38
▲ 6.35
31.49
▲ 3.89
28.98
▲ 2.51
27.67
▲ 1.31
27.82
▼ 0.15
100 Back SCY
—
—
1:31.83
1:15.02
▲ 16.81
1:07.63
▲ 7.39
1:00.81
▲ 6.82
59.19
▲ 1.62
56.42
▲ 2.77
200 Back SCY
—
—
—
—
—
2:11.12
2:08.26
▲ 2.86
2:09.75
▼ 1.49
50 Breast SCY
—
48.91
48.27
▲ 0.64
42.47
▲ 5.80
39.91
▲ 2.56
—
—
—
100 Breast SCY
2:02.86
—
—
—
1:24.00
▲ 38.86
1:13.98
▲ 10.02
1:09.10
▲ 4.88
1:10.04
▼ 0.94
50 Fly SCY
—
51.03
42.60
▲ 8.43
—
30.85
▲ 11.75
28.11
▲ 2.74
26.65
▲ 1.46
25.14
▲ 1.51
100 Fly SCY
—
—
—
—
—
1:05.24
58.11
▲ 7.13
56.01
▲ 2.10
100 IM SCY
—
1:38.33
1:30.77
▲ 7.56
1:17.25
▲ 13.52
1:10.47
▲ 6.78
1:02.60
▲ 7.87
—
57.91
▲ 4.69
200 IM SCY
—
—
—
—
2:33.93
2:15.22
▲ 18.71
2:12.20
▲ 3.02
2:10.25
▲ 1.95
400 IM SCY
—
—
—
—
—
4:58.48
4:50.59
▲ 7.89
—
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.