swimstats

Iason Cho

MLESDUTCWHEATHUDLELEZTNS

392 plausible swims · 61 meets · 2017-06-16 → 2026-01-01

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 23.16 +0.57s to Sectionals 2021-11-20 The 2021 Mark J. Braun Fall Classicvenue
100 Freestyle SCY 51.22 +2.23s to Sectionals 2020-10-25 Stevie Greishammer Meetvenue
200 Freestyle SCY 1:45.61 Sectionals ✓+10.62s to US Open 2023-03-24 2023 Four Corners Speedo Sectionals - Austinvenue
500 Freestyle SCY 4:48.31 Sectionals ✓+28.42s to US Open 2023-03-25 2023 Four Corners Speedo Sectionals - Austinvenue
1000 Freestyle SCY 10:04.69 Sectionals ✓+59.90s to US Open 2023-03-23 2023 Four Corners Speedo Sectionals - Austinvenue
1650 Freestyle SCY 17:21.44 +16.45s to Sectionals 2020-10-18 2020 TCAT Mile Meetslow pool
50 Backstroke SCY 30.92 +6.43s to Sectionals 2018-12-02 Shaker Shark Invitationalvenue
100 Backstroke SCY 53.70 Sectionals ✓+6.71s to US Open 2023-03-24 2023 Four Corners Speedo Sectionals - Austinvenue
200 Backstroke SCY 1:58.33 Sectionals ✓+15.04s to US Open 2023-03-25 2023 Four Corners Speedo Sectionals - Austinvenue
100 Breaststroke SCY 1:07.57 +3.98s to Sectionals 2020-01-18 2020 Jim Scullion Age Group Showdownvenue
200 Breaststroke SCY 2:37.59 +19.00s to Sectionals 2019-11-03 Kelly Kinney Memorial - Splash Out Cancervenue
50 Butterfly SCY 30.06 +6.37s to Sectionals 2018-11-18 The 2018 Mark J. Braun Fall Classicvenue
100 Butterfly SCY 56.82 +2.83s to Sectionals 2021-03-06 LESI Senior Champsvenue
200 Butterfly SCY 2:11.61 +8.82s to Sectionals 2020-02-23 2020 MRST Regional Age Group Champsvenue
100 Individual Medley SCY 1:04.97 2018-12-01 Shaker Shark Invitationalvenue
200 Individual Medley SCY 1:58.16 Sectionals ✓+12.77s to US Open 2023-03-26 2023 Four Corners Speedo Sectionals - Austinvenue
400 Individual Medley SCY 4:20.61 Sectionals ✓+32.92s to US Open 2021-03-05 LESI Senior Champsvenue
50 Freestyle LCM 26.95 +0.96s to Sectionals 2021-05-16 Robert F. Busbey Invitationalvenue
100 Freestyle LCM 56.75 +0.16s to Sectionals 2021-07-18 2021 Speedo Sectional Meetvenue
200 Freestyle LCM 2:05.06 +1.57s to Sectionals 2021-08-01 LESI Senior Champsvenue
400 Freestyle LCM 4:30.92 +8.73s to Sectionals 2021-06-18 Holtrey Summer Classicvenue
800 Freestyle LCM 9:22.66 +11.87s to Sectionals 2021-06-06 2021 CCS Age Group & Open LC Meetvenue
1500 Freestyle LCM 17:38.14 Sectionals ✓+106.75s to US Open 2021-06-04 2021 CCS Age Group & Open LC Meetvenue
50 Backstroke LCM 29.89 +1.20s to Sectionals 2021-07-02 2021 TCAT Midsummer Swim Meetvenue
100 Backstroke LCM 1:03.37 Sectionals ✓+6.48s to US Open 2021-07-30 LESI Senior Champsvenue
200 Backstroke LCM 2:18.49 Sectionals ✓+13.90s to US Open 2021-06-19 Holtrey Summer Classicvenue
50 Breaststroke LCM 43.69 +11.70s to Sectionals 2018-05-12 Penguin LC Season Openervenue
100 Breaststroke LCM 1:18.08 +5.29s to Sectionals 2021-06-20 Holtrey Summer Classicvenue
200 Breaststroke LCM 2:51.68 +11.89s to Sectionals 2021-07-03 2021 TCAT Midsummer Swim Meetvenue
50 Butterfly LCM 29.01 +1.62s to Sectionals 2021-07-30 LESI Senior Champsvenue
100 Butterfly LCM 1:05.35 +3.86s to Sectionals 2021-05-08 2021 TCAT LC Age Group & Open Meetvenue
200 Butterfly LCM 2:31.48 +11.99s to Sectionals 2021-06-05 2021 CCS Age Group & Open LC Meetvenue
200 Individual Medley LCM 2:20.81 +1.42s to Sectionals 2021-07-30 LESI Senior Champsvenue
400 Individual Medley LCM 5:08.98 +7.09s to Sectionals 2021-06-19 Holtrey Summer Classicvenue

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 26.58 flat 200 Free Relay 2017-12-03 Shaker Shark Invitational
50 Freestyle SCY 24.07 flying 200 Free Relay (leg 4) 2020-02-28 Lake Erie Junior Olympic Championship Meet
100 Freestyle SCY 52.04 flying 400 Free Relay (leg 4) 2020-02-29 Lake Erie Junior Olympic Championship Meet
200 Freestyle SCY 1:45.23 flying 800 Free Relay (leg 3) 2023-03-25 2023 Four Corners Speedo Sectionals - Austin
50 Backstroke SCY 28.51 flat 200 Medley Relay 2019-12-08 Shaker Shark Invitational
100 Backstroke SCY 54.02 flat 400 Medley Relay 2021-11-20 The 2021 Mark J. Braun Fall Classic
50 Butterfly SCY 29.47 flying 200 Medley Relay (leg 3) 2018-11-03 Kelly Kinney Memorial - Splash Out Cancer
50 Freestyle LCM 30.71 flying 200 Medley Relay (leg 4) 2018-06-16 2018 Jerry Holtrey Summer Classic
50 Freestyle LCM 25.73 flying 200 Free Relay (leg 4) 2021-07-31 LESI Senior Champs
100 Freestyle LCM 58.92 flat 400 Free Relay 2021-05-16 Robert F. Busbey Invitational
100 Freestyle LCM 1:04.25 flying 400 Medley Relay (leg 4) 2019-06-02 2019 CCS Age Group & Open LC Meet
100 Freestyle LCM 57.13 flying 400 Free Relay (leg 3) 2021-08-01 LESI Senior Champs
200 Freestyle LCM 2:03.17 flat 800 Free Relay 2021-07-17 2021 Speedo Sectional Meet
200 Freestyle LCM 2:03.12 flying 800 Free Relay (leg 2) 2021-07-30 LESI Senior Champs
50 Backstroke LCM 36.56 flat 200 Medley Relay 2018-08-03 2025 Central Zone 14 & Under Championship Mee
100 Backstroke LCM 1:03.53 flat 400 Medley Relay 2021-07-18 2021 Speedo Sectional Meet
50 Butterfly LCM 1:17.06 flying 200 Medley Relay (leg 3) 2018-06-03 2018 CCS Age Group & Open LC Meet
100 Butterfly LCM 1:02.97 flying 400 Medley Relay (leg 3) 2021-06-18 Holtrey Summer Classic

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

PR splits

100 Freestyle SCY 51.22

25.12
26.10

Front half 25.12s · back half 26.10s

200 Freestyle SCY 1:45.61

24.70
26.22
27.13
27.56

Front half 50.92s · back half 54.69s

500 Freestyle SCY 4:48.31

25.79
28.11
28.60
29.06
29.20
29.38
29.38
29.64
29.82
29.33

Front half 140.76s · back half 147.55s

1000 Freestyle SCY 10:04.69

25.42
27.76
28.88
29.30
29.75
30.12
30.43
30.60
30.77
30.78
30.77
31.25
31.14
31.08
31.27
30.98
31.45
31.13
31.35
30.46

Front half 293.81s · back half 310.88s

1650 Freestyle SCY 17:21.44

27.90
30.24
30.94
31.22
30.98
31.22
31.43
31.42
31.61
31.50
31.35
31.70
31.43
31.50
31.67
31.34
32.08
32.16
32.53
32.51
32.26
32.23
32.17
31.54
32.23
32.33
32.26
31.79
31.36
32.24
32.29
31.83
30.18

100 Backstroke SCY 53.70

25.86
27.84

Front half 25.86s · back half 27.84s

200 Backstroke SCY 1:58.33

27.31
29.53
30.32
31.17

Front half 56.84s · back half 61.49s

100 Breaststroke SCY 1:07.57

32.38
35.19

Front half 32.38s · back half 35.19s

200 Breaststroke SCY 2:37.59

36.02
39.65
40.76
41.16

Front half 75.67s · back half 81.92s

100 Butterfly SCY 56.82

26.37
30.45

Front half 26.37s · back half 30.45s

200 Butterfly SCY 2:11.61

28.19
32.07
34.53
36.82

Front half 60.26s · back half 71.35s

100 Individual Medley SCY 1:04.97

30.05
34.92

Front half 30.05s · back half 34.92s

200 Individual Medley SCY 1:58.16

25.38
29.14
35.73
27.91

Front half 54.52s · back half 63.64s

400 Individual Medley SCY 4:20.61

26.84
29.81
32.27
31.70
38.61
39.59
31.21
30.58

Front half 120.62s · back half 139.99s

100 Freestyle LCM 56.75

27.29
56.75
82.74
111.38
138.32
169.37
196.49
56.75

200 Freestyle LCM 2:05.06

29.21
32.09
31.96
31.80

Front half 61.30s · back half 63.76s

400 Freestyle LCM 4:30.92

30.03
33.06
33.68
34.77
34.57
35.74
34.85
34.22

Front half 131.54s · back half 139.38s

1500 Freestyle LCM 17:38.14

31.50
33.93
30.06
39.64
35.41
35.57
35.49
35.48
35.77
35.76
35.48
35.33
35.68
35.64
35.80
36.06
35.43
35.50
33.45
37.61
35.40
35.15
35.76
35.46
35.69
35.30
35.83
35.46
35.44
34.06

Front half 526.54s · back half 531.60s

100 Backstroke LCM 1:03.37

30.46
32.91

Front half 30.46s · back half 32.91s

200 Backstroke LCM 2:18.49

31.28
33.93
36.61
36.67

Front half 65.21s · back half 73.28s

100 Breaststroke LCM 1:18.08

36.69
41.39

Front half 36.69s · back half 41.39s

200 Breaststroke LCM 2:51.68

39.43
43.71
43.96
44.58

Front half 83.14s · back half 88.54s

100 Butterfly LCM 1:05.35

30.59
34.76

Front half 30.59s · back half 34.76s

200 Butterfly LCM 2:31.48

32.66
37.49
39.50
41.83

Front half 70.15s · back half 81.33s

200 Individual Medley LCM 2:20.81

30.46
35.12
42.94
32.29

Front half 65.58s · back half 75.23s

400 Individual Medley LCM 5:08.98

31.62
36.73
39.53
38.29
45.59
46.30
36.21
34.71

Front half 146.17s · back half 162.81s

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 23.16 17 swims
100 Freestyle SCY 51.22 17 swims
200 Freestyle SCY 1:45.61 18 swims
500 Freestyle SCY 4:48.31 13 swims
1000 Freestyle SCY 10:04.69 1 swim
1650 Freestyle SCY 17:21.44 1 swim
50 Backstroke SCY 30.92 7 swims
100 Backstroke SCY 53.70 25 swims
200 Backstroke SCY 1:58.33 24 swims
100 Breaststroke SCY 1:07.57 12 swims
200 Breaststroke SCY 2:37.59 6 swims
50 Butterfly SCY 30.06 2 swims
100 Butterfly SCY 56.82 11 swims
200 Butterfly SCY 2:11.61 5 swims
100 Individual Medley SCY 1:04.97 8 swims
200 Individual Medley SCY 1:58.16 25 swims
400 Individual Medley SCY 4:20.61 6 swims
50 Freestyle LCM 26.95 17 swims
100 Freestyle LCM 56.75 14 swims
200 Freestyle LCM 2:05.06 17 swims
400 Freestyle LCM 4:30.92 10 swims
800 Freestyle LCM 9:22.66 3 swims
1500 Freestyle LCM 17:38.14 5 swims
50 Backstroke LCM 29.89 11 swims
100 Backstroke LCM 1:03.37 24 swims
200 Backstroke LCM 2:18.49 17 swims
50 Breaststroke LCM 43.69 2 swims
100 Breaststroke LCM 1:18.08 12 swims
200 Breaststroke LCM 2:51.68 9 swims
50 Butterfly LCM 29.01 9 swims
100 Butterfly LCM 1:05.35 13 swims
200 Butterfly LCM 2:31.48 5 swims
200 Individual Medley LCM 2:20.81 17 swims
400 Individual Medley LCM 5:08.98 8 swims