Swimmer profile
Knox O'Brien
Male13-14757 SwimVA · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
34.73
31.32
▲ 3.41
29.01
▲ 2.31
25.95
▲ 3.06
24.33
▲ 1.62
23.03
▲ 1.30
100 Free SCY
—
1:11.91
1:05.18
▲ 6.73
58.53
▲ 6.65
55.45
▲ 3.08
49.90
▲ 5.55
200 Free SCY
—
2:46.17
2:34.86
▲ 11.31
2:10.47
▲ 24.39
—
2:00.53
▲ 9.94
500 Free SCY
—
—
—
—
5:50.89
5:41.65
▲ 9.24
1000 Free SCY
—
—
—
—
12:22.60
—
1650 Free SCY
—
—
—
—
20:31.71
—
50 Back SCY
39.97
36.03
▲ 3.94
32.12
▲ 3.91
30.58
▲ 1.54
28.58
▲ 2.00
26.81
▲ 1.77
100 Back SCY
—
1:16.71
1:11.50
▲ 5.21
1:05.41
▲ 6.09
1:02.62
▲ 2.79
58.40
▲ 4.22
200 Back SCY
—
—
—
—
2:20.27
2:23.76
▼ 3.49
50 Breast SCY
—
49.80
41.18
▲ 8.62
40.81
▲ 0.37
32.16
▲ 8.65
31.40
▲ 0.76
100 Breast SCY
—
—
—
1:26.58
1:18.30
▲ 8.28
1:15.49
▲ 2.81
200 Breast SCY
—
—
—
—
—
2:43.63
50 Fly SCY
39.07
34.69
▲ 4.38
31.34
▲ 3.35
28.63
▲ 2.71
27.04
▲ 1.59
24.38
▲ 2.66
100 Fly SCY
—
1:21.72
1:17.29
▲ 4.43
1:13.17
▲ 4.12
1:01.00
▲ 12.17
53.17
▲ 7.83
200 Fly SCY
—
—
—
—
—
2:18.15
100 IM SCY
1:30.84
1:23.45
▲ 7.39
1:15.21
▲ 8.24
1:09.13
▲ 6.08
1:05.29
▲ 3.84
1:04.38
▲ 0.91
200 IM SCY
—
—
2:43.62
2:36.23
▲ 7.39
2:24.79
▲ 11.44
2:18.86
▲ 5.93
400 IM SCY
—
—
—
—
—
4:59.62
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.