Sean Diffenderfer

MLEMISEMICHOLYSACUN!

26 plausible swims · 6 meets · 2019-08-01 → 2026-06-13

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 22.05 Sectionals ✓+2.36s to US Open 2026-02-08 2026 Michigan Openvenue
200 Freestyle SCY 1:41.08 Sectionals ✓+6.09s to US Open 2025-02-09 2025 Michigan Openvenue
500 Freestyle SCY 4:30.70 Sectionals ✓+10.81s to US Open 2026-02-07 2026 Michigan Openvenue
1650 Freestyle SCY 15:38.72 Sectionals ✓+30.73s to US Open 2026-02-06 2026 Michigan Openvenue
200 Freestyle LCM 2:04.04 +0.55s to Sectionals 2021-07-16 2021 Speedo Sectional Meetvenue
400 Freestyle LCM 4:17.96 Sectionals ✓+18.87s to US Open 2021-07-17 2021 Speedo Sectional Meetvenue
800 Freestyle LCM 8:59.73 Sectionals ✓+44.34s to US Open 2019-08-01 2019 WI Central Zone 14 & U Championshipslow pool
1500 Freestyle LCM 17:11.47 Sectionals ✓+80.08s to US Open 2021-07-15 2021 Speedo Sectional Meetvenue

National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.

Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.

PR splits

200 Freestyle SCY 1:41.08

23.44
25.70
26.16
25.78

Front half 49.14s · back half 51.94s

500 Freestyle SCY 4:30.70

24.17
26.75
27.36
27.73
27.44
27.38
27.66
27.86
27.96
26.39

Front half 133.45s · back half 137.25s

1650 Freestyle SCY 15:38.72

25.18
27.15
27.90
28.17
28.55
28.30
28.65
28.26
28.15
28.62
28.62
28.54
28.66
28.66
29.05
28.93
28.91
28.74
28.79
28.85
28.80
29.15
28.87
28.71
28.84
28.73
28.87
28.81
28.93
28.76
28.88
28.79
25.90

200 Freestyle LCM 2:04.04

28.13
31.36
33.70
30.85

Front half 59.49s · back half 64.55s

400 Freestyle LCM 4:17.96

29.60
32.06
33.19
32.82
33.14
33.13
33.05
30.97

Front half 127.67s · back half 130.29s

800 Freestyle LCM 8:59.73

29.12
32.03
33.68
33.77
33.60
34.23
33.96
34.66
33.77
35.04
34.36
35.13
34.91
34.21
34.56
32.70

Front half 265.05s · back half 274.68s

1500 Freestyle LCM 17:11.47

29.84
32.62
32.92
33.94
27.49
39.65
33.48
33.96
33.85
34.21
33.99
34.72
34.55
35.27
34.15
35.15
35.29
34.11
35.02
35.53
35.75
35.63
35.39
35.06
35.22
34.96
34.73
35.31
35.11
34.57

Front half 504.64s · back half 526.83s

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.

Progression

Faster times are higher. One card per event, all courses & history.

50 Freestyle SCY 22.05 2 swims
200 Freestyle SCY 1:41.08 4 swims
500 Freestyle SCY 4:30.70 4 swims
1650 Freestyle SCY 15:38.72 2 swims
200 Freestyle LCM 2:04.04 2 swims
400 Freestyle LCM 4:17.96 5 swims
800 Freestyle LCM 8:59.73 4 swims
1500 Freestyle LCM 17:11.47 3 swims