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
50 Free LCM
47.92
—
40.45
▲ 7.47
34.31
▲ 6.14
29.64
▲ 4.67
28.38
▲ 1.26
26.94
▲ 1.44
100 Free LCM
—
1:40.72
1:23.35
▲ 17.37
1:17.32
▲ 6.03
1:05.52
▲ 11.80
1:00.78
▲ 4.74
59.49
▲ 1.29
200 Free LCM
—
—
—
—
2:37.35
2:18.82
▲ 18.53
2:15.27
▲ 3.55
400 Free LCM
—
—
—
—
—
—
4:59.88
1500 Free LCM
—
—
—
—
—
20:31.55
—
50 Back LCM
56.72
46.57
▲ 10.15
45.06
▲ 1.51
38.40
▲ 6.66
32.82
▲ 5.58
—
31.32
▲ 1.50
100 Back LCM
—
—
1:43.50
1:25.17
▲ 18.33
1:11.48
▲ 13.69
1:08.64
▲ 2.84
1:07.02
▲ 1.62
200 Back LCM
—
—
—
—
2:33.53
2:29.74
▲ 3.79
2:26.45
▲ 3.29
50 Breast LCM
—
56.94
51.80
▲ 5.14
45.93
▲ 5.87
43.14
▲ 2.79
—
38.25
▲ 4.89
100 Breast LCM
—
—
—
—
1:32.27
1:23.32
▲ 8.95
—
200 Breast LCM
—
—
—
—
3:21.61
—
3:07.02
▲ 14.59
50 Fly LCM
—
—
45.59
38.54
▲ 7.05
32.58
▲ 5.96
—
30.45
▲ 2.13
100 Fly LCM
—
—
—
—
1:22.20
1:11.71
▲ 10.49
1:06.45
▲ 5.26
200 Fly LCM
—
—
—
—
2:58.71
2:44.70
▲ 14.01
2:48.15
▼ 3.45
200 IM LCM
—
—
3:23.56
—
—
2:34.42
▲ 49.14
2:29.18
▲ 5.24
400 IM LCM
—
—
—
—
5:47.46
5:24.52
▲ 22.94
—
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.