JD Chen

Mage 18EZVANOVA

219 plausible swims · 36 meets · 2019-10-05 → 2026-03-08

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	21.90	AA+0.21s to AAA	2025-10-10	TAC v. NOVA Dual Meet - copied venue
100 Freestyle	SCY	48.36	AA+0.67s to AAA	2025-10-12	TAC v. NOVA Dual Meet - copied venue
200 Freestyle	SCY	1:43.07	AAA+2.48s to AAAA	2026-03-06	2026 VSI SC Senior Championships venue
500 Freestyle	SCY	4:53.26	AA+6.57s to AAA	2023-03-04	2023 VSI SC Senior Championships venue
1000 Freestyle	SCY	10:20.94	AA+18.65s to AAA	2022-03-10	2022 VA SC Age Group Champs slow pool
50 Backstroke	SCY	29.58	B+0.89s to BB	2020-07-19	NOVA Intra-Squad Meet slow pool
100 Backstroke	SCY	53.52	AA+1.93s to AAA	2024-03-03	2024 VSI SC Senior Championships venue
200 Backstroke	SCY	1:53.46	AAA+5.17s to AAAA	2023-10-29	NOVA Senior Classic venue
50 Breaststroke	SCY	25.83	AAAA	2026-03-08	2026 VSI SC Senior Championships venue
100 Breaststroke	SCY	56.77	AAA+0.58s to AAAA	2026-03-06	2026 VSI SC Senior Championships venue
200 Breaststroke	SCY	2:06.17	AAA+3.98s to AAAA	2024-03-02	2024 VSI SC Senior Championships venue
50 Butterfly	SCY	28.90	B+0.21s to BB	2020-08-15	NOVA SEND OFF INTRA SQUAD MEET venue
100 Butterfly	SCY	55.20	A+1.31s to AA	2022-11-19	Bass Turkey Classic 2022 venue
200 Butterfly	SCY	1:57.85	AA+1.96s to AAA	2025-10-11	TAC v. NOVA Dual Meet - copied venue
100 Individual Medley	SCY	53.68		2025-10-11	TAC v. NOVA Dual Meet - copied venue
200 Individual Medley	SCY	1:52.43	AAA+1.54s to AAAA	2024-03-02	2024 VSI SC Senior Championships venue
400 Individual Medley	SCY	3:58.55	AAAA	2024-03-01	2024 VSI SC Senior Championships venue
50 Freestyle	LCM	24.98	AAA+0.99s to AAAA	2024-07-21	2024 VA LC Senior Champs venue
100 Freestyle	LCM	58.43	A+0.74s to AA	2022-05-01	2022 Helen Wang Sunflower Classic venue
200 Freestyle	LCM	2:05.62	AA+4.93s to AAA	2022-06-11	2022 VA NOVA Senior Classic venue
400 Freestyle	LCM	4:16.92	AAA+11.33s to AAAA	2024-07-20	2024 VA LC Senior Champs venue
800 Freestyle	LCM	9:39.38	A+16.09s to AA	2022-06-10	2022 VA NOVA Senior Classic venue
1500 Freestyle	LCM	18:24.28	A+26.49s to AA	2022-07-21	2022 VA LC Age Group Championships venue
100 Backstroke	LCM	59.82	AAA+1.13s to AAAA	2024-07-20	2024 VA LC Senior Champs venue
200 Backstroke	LCM	2:06.36	AAAA	2024-07-21	2024 VA LC Senior Champs venue
50 Breaststroke	LCM	32.33	AA+0.14s to AAA	2022-05-14	2022 VA NOVA-S Freedom Splash venue
100 Breaststroke	LCM	1:10.52	AA+2.13s to AAA	2023-07-13	2023 VA LC Senior Champs venue
200 Breaststroke	LCM	2:38.65	A+2.16s to AA	2022-06-04	2022 VA Storm Surge Open venue
50 Butterfly	LCM	28.83	A+0.24s to AA	2023-05-14	Freedom Splash venue
100 Butterfly	LCM	1:05.55	BB+1.26s to A	2022-05-14	2022 VA NOVA-S Freedom Splash venue
200 Butterfly	LCM	2:39.65	B+3.86s to BB	2022-06-11	2022 VA NOVA Senior Classic venue
200 Individual Medley	LCM	2:08.52	AAAA	2024-07-18	2024 VA LC Senior Champs venue
400 Individual Medley	LCM	4:35.17	AAAA	2024-07-19	2024 VA LC Senior Champs venue

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

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.

IMX / IMR

IMX 17-18 · SCY

5308 points (6/6 events)

Event	Time	Points
500 FR SCY	4:53.26	801
200 BK SCY	1:53.46	859
200 BR SCY	2:06.17	897
200 FL SCY	1:57.85	808
200 IM SCY	1:52.43	951
400 IM SCY	3:58.55	992

IMR 17-18 · SCY

4293 points (5/5 events)

Event	Time	Points
200 FR SCY	1:43.07	918
100 BK SCY	53.52	762
100 BR SCY	56.77	959
100 FL SCY	55.20	703
200 IM SCY	1:52.43	951

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

PR splits

100 Freestyle SCY 48.36

23.42

24.94

Front half 23.42s · back half 24.94s

200 Freestyle SCY 1:43.07

24.06

26.24

26.46

26.31

Front half 50.30s · back half 52.77s

500 Freestyle SCY 4:53.26

25.43

28.43

29.21

29.29

29.40

29.92

30.60

30.76

30.41

29.81

Front half 141.76s · back half 151.50s

1000 Freestyle SCY 10:20.94

26.91

30.06

30.85

30.70

31.35

31.45

31.55

31.65

31.62

31.20

31.37

32.09

31.37

31.60

31.64

31.44

31.37

31.27

31.23

30.22

Front half 307.34s · back half 313.60s

200 Backstroke SCY 1:53.46

26.82

28.56

29.00

29.08

Front half 55.38s · back half 58.08s

100 Breaststroke SCY 56.77

27.30

29.47

Front half 27.30s · back half 29.47s

200 Breaststroke SCY 2:06.17

28.27

32.48

32.94

Front half 60.75s · back half 65.42s

100 Butterfly SCY 55.20

25.62

29.58

Front half 25.62s · back half 29.58s

200 Butterfly SCY 1:57.85

25.85

29.74

30.88

31.38

Front half 55.59s · back half 62.26s

100 Individual Medley SCY 53.68

25.25

28.43

Front half 25.25s · back half 28.43s

200 Individual Medley SCY 1:52.43

24.96

27.95

32.62

26.90

Front half 52.91s · back half 59.52s

400 Individual Medley SCY 3:58.55

25.14

30.15

29.71

30.66

33.67

34.12

27.96

27.14

Front half 115.66s · back half 122.89s

100 Freestyle LCM 58.43

28.60

29.83

Front half 28.60s · back half 29.83s

200 Freestyle LCM 2:05.62

28.56

31.93

33.19

31.94

Front half 60.49s · back half 65.13s

400 Freestyle LCM 4:16.92

29.29

31.92

32.33

32.72

32.75

33.12

32.99

31.80

Front half 126.26s · back half 130.66s

800 Freestyle LCM 9:39.38

31.22

35.26

35.60

36.80

37.19

36.79

29.99

43.26

37.19

36.60

36.63

36.39

36.60

36.80

30.73

42.33

Front half 286.11s · back half 293.27s

1500 Freestyle LCM 18:24.28

31.08

34.44

36.25

35.42

37.01

36.29

37.77

36.40

37.46

36.00

37.36

36.57

37.45

36.69

37.08

35.93

36.52

36.29

29.24

46.64

37.88

37.12

38.07

37.42

38.76

37.52

38.39

36.42

30.22

44.59

Front half 543.27s · back half 561.01s

100 Backstroke LCM 59.82

29.57

30.25

Front half 29.57s · back half 30.25s

200 Backstroke LCM 2:06.36

29.99

32.04

32.58

31.75

Front half 62.03s · back half 64.33s

100 Breaststroke LCM 1:10.52 RT 0.64s

32.34

38.18

Front half 32.34s · back half 38.18s

200 Breaststroke LCM 2:38.65

36.42

40.16

41.43

40.64

Front half 76.58s · back half 82.07s

100 Butterfly LCM 1:05.55

30.43

35.12

Front half 30.43s · back half 35.12s

200 Butterfly LCM 2:39.65

31.87

40.79

43.71

43.28

Front half 72.66s · back half 86.99s

200 Individual Medley LCM 2:08.52

27.98

32.45

37.65

30.44

Front half 60.43s · back half 68.09s

400 Individual Medley LCM 4:35.17

28.42

33.61

34.72

35.00

38.89

40.00

32.58

31.95

Front half 131.75s · back half 143.42s

Reaction time

fastest 0.60s average 0.639s slowest 0.69s 12 electronic starts

Start reaction over time faster starts higher

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 21.90 7 swims

100 Freestyle SCY 48.36 6 swims

200 Freestyle SCY 1:43.07 5 swims

500 Freestyle SCY 4:53.26 5 swims

1000 Freestyle SCY 10:20.94 3 swims

50 Backstroke SCY 29.58 4 swims

100 Backstroke SCY 53.52 10 swims

200 Backstroke SCY 1:53.46 9 swims

50 Breaststroke SCY 25.83 8 swims

100 Breaststroke SCY 56.77 17 swims

200 Breaststroke SCY 2:06.17 11 swims

50 Butterfly SCY 28.90 3 swims

100 Butterfly SCY 55.20 8 swims

200 Butterfly SCY 1:57.85 6 swims

100 Individual Medley SCY 53.68 1 swim

200 Individual Medley SCY 1:52.43 11 swims

400 Individual Medley SCY 3:58.55 9 swims

50 Freestyle LCM 24.98 10 swims

100 Freestyle LCM 58.43 1 swim

200 Freestyle LCM 2:05.62 5 swims

400 Freestyle LCM 4:16.92 4 swims

800 Freestyle LCM 9:39.38 1 swim

1500 Freestyle LCM 18:24.28 1 swim

100 Backstroke LCM 59.82 12 swims

200 Backstroke LCM 2:06.36 16 swims

50 Breaststroke LCM 32.33 1 swim

100 Breaststroke LCM 1:10.52 10 swims

200 Breaststroke LCM 2:38.65 8 swims

50 Butterfly LCM 28.83 1 swim

100 Butterfly LCM 1:05.55 2 swims

200 Butterfly LCM 2:39.65 1 swim

200 Individual Medley LCM 2:08.52 15 swims

400 Individual Medley LCM 4:35.17 8 swims