Seojoon Lee

Mage 12MIUSSC

237 plausible swims · 35 meets · 2024-05-18 → 2026-07-19

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 28.89 BB+0.80s to A·+6.30s to Sectionals 2026-06-14 2026 USSC Stoney Summer Spectacularvenue
100 Freestyle SCY 1:00.55 A+1.76s to AA·+11.56s to Sectionals 2026-07-11 2026 USSC July Last Chancevenue
200 Freestyle SCY 2:15.82 BB+2.13s to A·+28.33s to Sectionals 2026-06-13 2026 USSC Stoney Summer Spectacularvenue
500 Freestyle SCY 5:57.15 A+12.16s to AA·+64.26s to Sectionals 2026-03-21 2026 SCY MAGS Championship Meetfast pool
1000 Freestyle SCY 12:39.13 BB+1.84s to A·+150.64s to Sectionals 2026-01-17 2026 Odd Age Classicvenue
50 Backstroke SCY 33.69 BB+1.00s to A·+9.20s to Sectionals 2026-05-09 2026 West Coast vs The "D" Dual Meetvenue
100 Backstroke SCY 1:13.01 BB+3.72s to A·+16.92s to Sectionals 2026-02-08 2026 Michigan Openvenue
200 Backstroke SCY 2:37.15 BB+8.96s to A·+35.76s to Sectionals 2026-06-13 2026 USSC Stoney Summer Spectacularvenue
50 Breaststroke SCY 37.00 BB+0.31s to A·+9.81s to Sectionals 2026-03-01 2026 Junior Cupvenue
100 Breaststroke SCY 1:20.88 BB+2.49s to A·+17.29s to Sectionals 2026-06-14 2026 USSC Stoney Summer Spectacularvenue
200 Breaststroke SCY 2:55.89 BB+7.50s to A·+37.30s to Sectionals 2026-03-21 2026 SCY MAGS Championship Meetfast pool
50 Butterfly SCY 31.43 BB+0.24s to A·+7.74s to Sectionals 2026-07-11 2026 USSC July Last Chancevenue
100 Butterfly SCY 1:11.42 BB+2.13s to A·+17.43s to Sectionals 2026-03-01 2026 Junior Cupvenue
200 Butterfly SCY 2:41.13 BB+9.64s to A·+38.34s to Sectionals 2026-07-11 2026 USSC July Last Chancevenue
100 Individual Medley SCY 1:11.56 BB+1.57s to A 2026-02-28 2026 Junior Cupvenue
200 Individual Medley SCY 2:33.11 BB+0.82s to A·+32.12s to Sectionals 2026-06-14 2026 USSC Stoney Summer Spectacularvenue
400 Individual Medley SCY 5:28.58 BB+5.09s to A·+64.59s to Sectionals 2026-03-22 2026 SCY MAGS Championship Meetfast pool
50 Freestyle LCM 32.00 A+1.21s to AA·+6.01s to Sectionals 2026-05-17 2026 CW Mega May Showersvenue
100 Freestyle LCM 1:16.72 B+0.53s to BB·+20.13s to Sectionals 2025-06-28 2025 USSC June Invitevenue
200 Freestyle LCM 2:30.36 A+3.17s to AA·+26.87s to Sectionals 2026-06-27 2026 Eric Namesnik Memorial Invitevenue
400 Freestyle LCM 5:12.84 AA+13.35s to AAA·+50.65s to Sectionals 2026-07-18 2026 MI LCM MAGS Championship Meetfast pool
50 Backstroke LCM 41.94 B+0.75s to BB·+13.25s to Sectionals 2025-06-28 2025 USSC June Invitevenue
100 Backstroke LCM 1:24.69 BB+2.80s to A·+20.30s to Sectionals 2026-06-27 2026 Eric Namesnik Memorial Invitevenue
200 Backstroke LCM 2:55.48 BB+1.49s to A·+35.69s to Sectionals 2026-06-26 2026 Eric Namesnik Memorial Invitevenue
50 Breaststroke LCM 43.54 BB+1.55s to A·+11.55s to Sectionals 2026-05-16 2026 CW Mega May Showersvenue
100 Breaststroke LCM 1:36.51 BB+5.22s to A·+23.72s to Sectionals 2026-05-17 2026 CW Mega May Showersvenue
200 Breaststroke LCM 3:21.77 BB+6.38s to A·+41.98s to Sectionals 2026-06-26 2026 Eric Namesnik Memorial Invitevenue
50 Butterfly LCM 35.22 A+1.63s to AA·+7.83s to Sectionals 2026-05-16 2026 CW Mega May Showersvenue
100 Butterfly LCM 1:20.72 BB+1.23s to A·+19.23s to Sectionals 2026-07-18 2026 MI LCM MAGS Championship Meetfast pool
200 Butterfly LCM 3:06.17 BB+10.08s to A·+46.68s to Sectionals 2026-07-17 2026 MI LCM MAGS Championship Meetfast pool
200 Individual Medley LCM 2:51.61 A+5.12s to AA·+32.22s to Sectionals 2026-07-17 2026 MI LCM MAGS Championship Meetfast pool
400 Individual Medley LCM 6:06.77 A+7.08s to AA·+64.88s to Sectionals 2026-07-19 2026 MI LCM MAGS Championship Meetfast pool

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

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.

Fastest relay legs

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 28.22 flying 200 Free Relay (leg 3) 2026-02-28 2026 Junior Cup
100 Freestyle SCY 1:01.75 flying 400 Free Relay (leg 3) 2026-03-20 2026 SCY MAGS Championship Meet
100 Freestyle SCY 1:01.10 flying 400 Medley Relay (leg 4) 2026-03-21 2026 SCY MAGS Championship Meet
50 Backstroke SCY 36.12 flat 200 Medley Relay 2025-03-02 2025 10 & Under Championship Meet
50 Butterfly SCY 30.36 flying 200 Medley Relay (leg 3) 2026-03-20 2026 SCY MAGS Championship Meet
50 Freestyle LCM 31.41 flat 200 Free Relay 2026-07-19 2026 MI LCM MAGS Championship Meet
50 Freestyle LCM 40.18 flying 200 Free Relay (leg 2) 2024-07-21 2024 MAGS Long Course Championship Meet
100 Freestyle LCM 1:08.21 flat 400 Free Relay 2026-07-17 2026 MI LCM MAGS Championship Meet
50 Backstroke LCM 42.17 flat 200 Medley Relay 2024-07-20 2024 MAGS Long Course Championship Meet
50 Butterfly LCM 34.98 flying 200 Medley Relay (leg 3) 2026-07-18 2026 MI LCM MAGS Championship Meet
100 Butterfly LCM 1:21.09 flying 400 Medley Relay (leg 3) 2026-07-18 2026 MI LCM MAGS Championship Meet

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

IMX / IMR

IMX 11-12 · LCM

3152 points (5/5 events)

EventTime Points
400 FR LCM 5:12.84 763
100 BK LCM 1:24.69 574
100 BR LCM 1:36.51 548
100 FL LCM 1:20.72 592
200 IM LCM 2:51.61 675

IMR 11-12 · SCY

3074 points (5/5 events)

EventTime Points
200 FR SCY 2:15.82 639
50 BK SCY 33.69 585
50 BR SCY 37.00 616
50 FL SCY 31.43 612
100 IM SCY 1:11.56 622

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 1:00.55

29.03
31.52

Front half 29.03s · back half 31.52s

200 Freestyle SCY 2:15.82

30.57
34.26
35.80
35.19

Front half 64.83s · back half 70.99s

500 Freestyle SCY 5:57.15

31.18
35.03
35.99
36.32
36.60
36.76
36.88
36.82
36.55
35.02

Front half 175.12s · back half 182.03s

1000 Freestyle SCY 12:39.13

34.65
38.04
37.55
38.39
38.65
39.21
38.22
38.87
38.41
39.09
38.09
38.37
38.40
38.24
38.32
38.13
38.03
38.23
37.38
34.86

Front half 381.08s · back half 378.05s

100 Backstroke SCY 1:13.01

35.76
37.25

Front half 35.76s · back half 37.25s

200 Backstroke SCY 2:37.15

37.51
40.56
40.01
39.07

Front half 78.07s · back half 79.08s

100 Breaststroke SCY 1:20.88

38.81
42.07

Front half 38.81s · back half 42.07s

200 Breaststroke SCY 2:55.89

40.38
45.68
45.59
44.24

Front half 86.06s · back half 89.83s

100 Butterfly SCY 1:11.42

33.85
37.57

Front half 33.85s · back half 37.57s

200 Butterfly SCY 2:41.13

37.00
40.19
42.03
41.91

Front half 77.19s · back half 83.94s

100 Individual Medley SCY 1:11.56

33.56
38.00

Front half 33.56s · back half 38.00s

200 Individual Medley SCY 2:33.11

33.75
40.30
45.52
33.54

Front half 74.05s · back half 79.06s

400 Individual Medley SCY 5:28.58

35.56
41.54
41.05
41.32
48.07
48.44
36.60
36.00

Front half 159.47s · back half 169.11s

100 Freestyle LCM 1:16.72

37.19
39.53

Front half 37.19s · back half 39.53s

200 Freestyle LCM 2:30.36

33.95
38.58
40.08
37.75

Front half 72.53s · back half 77.83s

400 Freestyle LCM 5:12.84

35.10
38.92
40.01
39.81
40.52
40.15
39.84
38.49

Front half 153.84s · back half 159.00s

100 Backstroke LCM 1:24.69

41.24
43.45

Front half 41.24s · back half 43.45s

200 Backstroke LCM 2:55.48

42.61
44.97
45.27
42.63

Front half 87.58s · back half 87.90s

100 Breaststroke LCM 1:36.51

46.09
50.42

Front half 46.09s · back half 50.42s

200 Breaststroke LCM 3:21.77

46.58
51.25
52.71
51.23

Front half 97.83s · back half 103.94s

100 Butterfly LCM 1:20.72

37.25
43.47

Front half 37.25s · back half 43.47s

200 Butterfly LCM 3:06.17

39.16
47.91
49.03
50.07

Front half 87.07s · back half 99.10s

200 Individual Medley LCM 2:51.61

37.35
46.97
48.81
38.48

Front half 84.32s · back half 87.29s

400 Individual Medley LCM 6:06.77

39.47
48.39
49.09
47.83
50.82
51.64
40.20
39.33

Front half 184.78s · back half 181.99s

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 28.89 17 swims
100 Freestyle SCY 1:00.55 18 swims
200 Freestyle SCY 2:15.82 14 swims
500 Freestyle SCY 5:57.15 7 swims
1000 Freestyle SCY 12:39.13 1 swim
50 Backstroke SCY 33.69 21 swims
100 Backstroke SCY 1:13.01 15 swims
200 Backstroke SCY 2:37.15 5 swims
50 Breaststroke SCY 37.00 17 swims
100 Breaststroke SCY 1:20.88 19 swims
200 Breaststroke SCY 2:55.89 6 swims
50 Butterfly SCY 31.43 8 swims
100 Butterfly SCY 1:11.42 11 swims
200 Butterfly SCY 2:41.13 6 swims
100 Individual Medley SCY 1:11.56 15 swims
200 Individual Medley SCY 2:33.11 10 swims
400 Individual Medley SCY 5:28.58 1 swim
50 Freestyle LCM 32.00 2 swims
100 Freestyle LCM 1:16.72 2 swims
200 Freestyle LCM 2:30.36 3 swims
400 Freestyle LCM 5:12.84 2 swims
50 Backstroke LCM 41.94 3 swims
100 Backstroke LCM 1:24.69 5 swims
200 Backstroke LCM 2:55.48 3 swims
50 Breaststroke LCM 43.54 4 swims
100 Breaststroke LCM 1:36.51 5 swims
200 Breaststroke LCM 3:21.77 2 swims
50 Butterfly LCM 35.22 1 swim
100 Butterfly LCM 1:20.72 3 swims
200 Butterfly LCM 3:06.17 1 swim
200 Individual Medley LCM 2:51.61 6 swims
400 Individual Medley LCM 6:06.77 2 swims