Justin Shi

Mage 18BDLAMTNMNTSTNTROTXLA

179 plausible swims · 30 meets · 2020-03-06 → 2026-06-14

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	22.26	AA+0.57s to AAA	2026-01-11	2026 ST TXLA New Year's Classic Invite venue
100 Freestyle	SCY	48.37	AA+0.68s to AAA	2024-11-25	2024 ST TXLA 11&Over November Unclassified venue
200 Freestyle	SCY	1:43.21	AAA+2.62s to AAAA	2025-11-09	2025 ST TXLA 11&O November Unclassified Invit venue
500 Freestyle	SCY	4:41.50	AAA+7.91s to AAAA	2025-02-15	2025 ST AAAA Senior Champs venue
1000 Freestyle	SCY	9:50.58	AAA+15.69s to AAAA	2025-01-19	2025 ST TXLA New Year's Classic venue
1650 Freestyle	SCY	16:22.46	AAA+24.27s to AAAA	2025-01-17	2025 ST TXLA New Year's Classic venue
50 Backstroke	SCY	29.81	B+1.12s to BB	2020-03-06	2020 Short Course TAGS Championships venue
100 Backstroke	SCY	50.25	AAA+1.06s to AAAA	2024-12-22	2024 ST TXLA Jingle Bell Splash venue
200 Backstroke	SCY	1:51.11	AAA+2.82s to AAAA	2024-12-20	2024 ST TXLA Jingle Bell Splash venue
100 Breaststroke	SCY	1:03.83	A+2.24s to AA	2025-10-18	2025 ST TXLA 11&Over Fall Kick Off Invite venue
200 Breaststroke	SCY	2:22.71	BB+3.12s to A	2025-10-19	2025 ST TXLA 11&Over Fall Kick Off Invite venue
100 Butterfly	SCY	53.72	AA+2.13s to AAA	2025-03-06	LAC 2025 Speedo Sectional Championship Series
200 Butterfly	SCY	2:00.61	AA+4.72s to AAA	2026-01-11	2026 ST TXLA New Year's Classic Invite venue
200 Individual Medley	SCY	1:58.20	AA+2.01s to AAA	2024-12-22	2024 ST TXLA Jingle Bell Splash venue
400 Individual Medley	SCY	4:08.14	AAA+8.75s to AAAA	2026-01-09	2026 ST TXLA New Year's Classic Invite venue
50 Freestyle	LCM	25.37	AA+0.28s to AAA	2024-06-23	2024 ST AAAA NS George Block Invite venue
100 Freestyle	LCM	55.12	AAA+2.43s to AAAA	2024-07-11	2024 ST TXLA SZ LC Sectional Champs venue
200 Freestyle	LCM	1:59.88	AAA+4.69s to AAAA	2024-06-22	2024 ST AAAA NS George Block Invite venue
400 Freestyle	LCM	4:21.10	AA+3.81s to AAA	2024-07-13	2024 ST TXLA SZ LC Sectional Champs venue
800 Freestyle	LCM	9:01.18	AA+2.39s to AAA	2024-04-12	2024 ST TXLA 11&O Long Course Kick Off venue
50 Backstroke	LCM	28.52	AAA+0.53s to AAAA	2025-07-23	USA Swimming Futures Sacramento 2025
100 Backstroke	LCM	59.62	AAA+0.93s to AAAA	2025-07-11	2025 ST TXLA SZ LC Sectional Champs venue
200 Backstroke	LCM	2:09.16	AAA+1.47s to AAAA	2025-07-12	2025 ST TXLA SZ LC Sectional Champs venue
100 Breaststroke	LCM	1:15.22	BB+0.53s to A	2024-05-26	2024 ST TXLA 11&Over End of School Splash venue
200 Breaststroke	LCM	2:49.27	BB+5.98s to A	2025-04-13	2025 ST TXLA 11& Over Long Course Kick Off venue
50 Butterfly	LCM	27.46	AA+0.07s to AAA	2025-07-24	USA Swimming Futures Sacramento 2025 venue
100 Butterfly	LCM	1:00.12	AA+1.23s to AAA	2024-06-21	2024 ST AAAA NS George Block Invite venue
200 Butterfly	LCM	2:31.01	BB+7.12s to A	2024-06-15	2024 ST TXLA Texas Open venue
200 Individual Medley	LCM	2:14.09	AAA+4.50s to AAAA	2024-07-14	2024 ST TXLA SZ LC Sectional Champs venue
400 Individual Medley	LCM	4:46.37	AAA+8.08s to AAAA	2025-07-11	2025 ST TXLA SZ LC Sectional Champs venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.

Fastest relay legs

Leg	Course	Time	Start	Relay	Date	Meet
50 Backstroke	LCM	29.43	flat	200 Medley Relay	2025-07-23	USA Swimming Futures Sacramento 2025

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 17-18 · SCY

4896 points (6/6 events)

Event	Time	Points
500 FR SCY	4:41.50	906
200 BK SCY	1:51.11	915
200 BR SCY	2:22.71	620
200 FL SCY	2:00.61	754
200 IM SCY	1:58.20	819
400 IM SCY	4:08.14	882

IMR 17-18 · LCM

4148 points (5/5 events)

Event	Time	Points
200 FR LCM	1:59.88	875
100 BK LCM	59.62	929
100 BR LCM	1:15.22	647
100 FL LCM	1:00.12	807
200 IM LCM	2:14.09	890

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

PR splits

100 Freestyle SCY 48.37

23.21

25.16

Front half 23.21s · back half 25.16s

200 Freestyle SCY 1:43.21

24.24

25.29

26.84

Front half 49.53s · back half 53.68s

500 Freestyle SCY 4:41.50

25.70

27.55

28.15

28.90

27.50

28.64

29.61

29.30

28.82

27.33

Front half 137.80s · back half 143.70s

1650 Freestyle SCY 16:22.46

26.88

29.03

28.78

29.08

28.98

29.45

29.46

29.18

29.32

29.73

29.80

29.88

29.96

30.33

30.27

29.91

30.16

29.93

30.11

30.34

30.36

30.24

30.23

30.19

30.68

29.96

30.42

30.28

30.30

30.27

29.69

28.90

100 Backstroke SCY 50.25

24.39

25.86

Front half 24.39s · back half 25.86s

200 Backstroke SCY 1:51.11

25.54

27.68

29.37

28.52

Front half 53.22s · back half 57.89s

100 Breaststroke SCY 1:03.83

29.82

34.01

Front half 29.82s · back half 34.01s

200 Breaststroke SCY 2:22.71

31.04

35.78

38.15

37.74

Front half 66.82s · back half 75.89s

200 Butterfly SCY 2:00.61

26.47

30.39

31.85

31.90

Front half 56.86s · back half 63.75s

200 Individual Medley SCY 1:58.20

25.91

29.71

35.40

27.18

Front half 55.62s · back half 62.58s

400 Individual Medley SCY 4:08.14

25.31

29.16

31.95

31.12

35.82

37.81

28.70

28.27

Front half 117.54s · back half 130.60s

100 Freestyle LCM 55.12

26.11

29.01

Front half 26.11s · back half 29.01s

200 Freestyle LCM 1:59.88

27.99

29.46

31.83

30.60

Front half 57.45s · back half 62.43s

400 Freestyle LCM 4:21.10

29.87

32.93

32.92

33.54

33.55

33.51

33.27

31.51

Front half 129.26s · back half 131.84s

800 Freestyle LCM 9:01.18

30.17

33.04

33.64

34.19

34.29

34.82

34.81

34.55

32.90

34.01

34.33

34.79

34.87

34.47

34.25

32.05

Front half 269.51s · back half 271.67s

100 Backstroke LCM 59.62

29.36

30.26

Front half 29.36s · back half 30.26s

200 Backstroke LCM 2:09.16

29.87

32.28

33.52

33.49

Front half 62.15s · back half 67.01s

200 Breaststroke LCM 2:49.27

80.30

88.97

Front half 80.30s · back half 88.97s

100 Butterfly LCM 1:00.12

28.41

31.71

Front half 28.41s · back half 31.71s

200 Butterfly LCM 2:31.01

33.30

37.19

80.52

200 Individual Medley LCM 2:14.09

28.53

32.93

41.99

30.64

Front half 61.46s · back half 72.63s

400 Individual Medley LCM 4:46.37

30.25

34.17

36.40

36.66

41.73

42.95

32.70

31.51

Front half 137.48s · back half 148.89s

Reaction time

fastest 0.70s average 0.700s slowest 0.70s 1 electronic start

From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.

Progression

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

50 Freestyle SCY 22.26 6 swims

100 Freestyle SCY 48.37 5 swims

200 Freestyle SCY 1:43.21 9 swims

500 Freestyle SCY 4:41.50 8 swims

1000 Freestyle SCY 9:50.58 3 swims

1650 Freestyle SCY 16:22.46 1 swim

50 Backstroke SCY 29.81 1 swim

100 Backstroke SCY 50.25 7 swims

200 Backstroke SCY 1:51.11 12 swims

100 Breaststroke SCY 1:03.83 2 swims

200 Breaststroke SCY 2:22.71 2 swims

100 Butterfly SCY 53.72 6 swims

200 Butterfly SCY 2:00.61 3 swims

200 Individual Medley SCY 1:58.20 7 swims

400 Individual Medley SCY 4:08.14 3 swims

50 Freestyle LCM 25.37 6 swims

100 Freestyle LCM 55.12 6 swims

200 Freestyle LCM 1:59.88 11 swims

400 Freestyle LCM 4:21.10 4 swims

800 Freestyle LCM 9:01.18 1 swim

50 Backstroke LCM 28.52 7 swims

100 Backstroke LCM 59.62 17 swims

200 Backstroke LCM 2:09.16 14 swims

100 Breaststroke LCM 1:15.22 2 swims

200 Breaststroke LCM 2:49.27 3 swims

50 Butterfly LCM 27.46 1 swim

100 Butterfly LCM 1:00.12 8 swims

200 Butterfly LCM 2:31.01 2 swims

200 Individual Medley LCM 2:14.09 13 swims

400 Individual Medley LCM 4:46.37 9 swims