Swimmer profile
Yiyi Cheng
Male11-12First Colony Swim Team, Inc.GU · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
42.42
36.45
▲ 5.97
33.74
▲ 2.71
33.25
▲ 0.49
100 Free LCM
1:37.82
1:22.95
▲ 14.87
1:15.39
▲ 7.56
1:14.13
▲ 1.26
200 Free LCM
—
2:56.76
—
—
50 Back LCM
50.17
48.09
▲ 2.08
43.04
▲ 5.05
—
100 Back LCM
—
—
1:33.91
—
50 Breast LCM
49.73
44.00
▲ 5.73
38.45
▲ 5.55
—
100 Breast LCM
1:53.07
1:38.87
▲ 14.20
1:27.01
▲ 11.86
1:25.39
▲ 1.62
200 Breast LCM
3:58.87
3:31.32
▲ 27.55
3:06.01
▲ 25.31
—
50 Fly LCM
55.45
46.52
▲ 8.93
39.38
▲ 7.14
37.88
▲ 1.50
100 Fly LCM
2:09.58
—
1:34.98
▲ 34.60
1:30.10
▲ 4.88
200 IM LCM
—
—
2:58.58
—
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.