Swimmer profile
Mark Sferra
Male17-18Lakeshore Swim ClubOH · CENTRALCollege athlete · Oberlin CollegeD3
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2019–20
2020–21
2022–23
2023–24
2024–25
2025–26
50 Free SCY
42.88
40.17
▲ 2.71
37.51
▲ 2.66
32.42
▲ 5.09
—
25.97
▲ 6.45
23.79
▲ 2.18
23.08
▲ 0.71
100 Free SCY
1:39.86
1:37.65
▲ 2.21
1:27.21
▲ 10.44
1:16.81
▲ 10.40
—
53.98
▲ 22.83
52.13
▲ 1.85
50.96
▲ 1.17
200 Free SCY
—
—
3:13.32
—
2:03.03
▲ 70.29
1:54.46
▲ 8.57
1:54.23
▲ 0.23
1:51.75
▲ 2.48
500 Free SCY
—
—
—
—
5:20.46
5:07.29
▲ 13.17
5:10.68
▼ 3.39
5:00.37
▲ 10.31
1000 Free SCY
—
—
—
—
—
—
11:41.01
10:52.14
▲ 48.87
1650 Free SCY
—
—
—
—
—
—
19:15.28
17:36.33
▲ 98.95
50 Back SCY
53.80
50.36
▲ 3.44
47.82
▲ 2.54
—
—
—
—
—
100 Back SCY
—
—
—
1:32.73
—
1:03.38
▲ 29.35
1:04.16
▼ 0.78
—
50 Breast SCY
—
1:03.20
54.16
▲ 9.04
—
—
—
—
—
100 Breast SCY
—
2:21.98
—
—
—
—
—
—
50 Fly SCY
56.29
45.42
▲ 10.87
—
—
—
—
—
24.96
▲ 20.46
100 Fly SCY
—
—
1:51.26
—
—
—
59.20
▲ 52.06
58.44
▲ 0.76
200 Fly SCY
—
—
—
—
—
—
—
2:09.60
100 IM SCY
—
—
—
1:32.11
—
1:05.01
▲ 27.10
1:02.38
▲ 2.63
—
200 IM SCY
—
—
—
3:21.35
—
2:16.90
▲ 64.45
—
—
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.