Swimmer profile
Isaac Zhang
Male10 & UnderFirst Colony Swim Team, Inc.GU · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
49.80
45.49
▲ 4.31
38.43
▲ 7.06
34.56
▲ 3.87
32.39
▲ 2.17
100 Free LCM
2:08.43
1:44.72
▲ 23.71
1:28.49
▲ 16.23
1:17.77
▲ 10.72
1:12.63
▲ 5.14
200 Free LCM
—
3:58.25
3:15.75
▲ 42.50
2:55.88
▲ 19.87
2:42.30
▲ 13.58
400 Free LCM
—
—
—
6:07.57
5:54.05
▲ 13.52
50 Back LCM
1:09.59
54.44
▲ 15.15
47.46
▲ 6.98
42.04
▲ 5.42
39.03
▲ 3.01
100 Back LCM
2:27.48
1:57.06
▲ 30.42
1:49.00
▲ 8.06
1:33.36
▲ 15.64
1:25.04
▲ 8.32
50 Breast LCM
1:07.03
53.47
▲ 13.56
47.18
▲ 6.29
41.05
▲ 6.13
39.89
▲ 1.16
100 Breast LCM
2:16.50
1:57.55
▲ 18.95
1:45.19
▲ 12.36
1:31.90
▲ 13.29
1:29.46
▲ 2.44
50 Fly LCM
1:06.90
54.89
▲ 12.01
47.68
▲ 7.21
42.49
▲ 5.19
—
100 Fly LCM
—
—
—
1:40.91
1:36.98
▲ 3.93
200 IM LCM
—
—
3:39.13
3:10.26
▲ 28.87
3:03.32
▲ 6.94
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.