Ryonosuke Jefferson

Mage 13MTPCSNDARTSNS

53 plausible swims · 6 meets · 2025-03-21 → 2026-04-09

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	24.18	AAA+0.89s to AAAA	2026-03-29	2026 Southwest Age Group Regional fast pool
100 Freestyle	SCY	51.48	AAA+0.79s to AAAA	2026-03-30	2026 Southwest Age Group Regional fast pool
200 Freestyle	SCY	1:52.47	AAA+1.68s to AAAA	2026-03-28	2026 Southwest Age Group Regional fast pool
500 Freestyle	SCY	4:59.04	AAA+0.05s to AAAA	2026-03-28	2026 Southwest Age Group Regional fast pool
1000 Freestyle	SCY	10:26.48	AAA+7.79s to AAAA	2026-03-30	2026 Southwest Age Group Regional fast pool
1650 Freestyle	SCY	17:15.51	AAAA	2026-04-09	2026 Far Western SC Hosted By SCSC venue
200 Breaststroke	SCY	2:29.79	AA+6.00s to AAA	2026-01-17	Cal Invitational Swim Meet venue
50 Butterfly	SCY	26.72	AAA+0.73s to AAAA	2026-03-06	2026 SNS 14&Under Short Course Championships venue
100 Butterfly	SCY	58.53	AA+0.54s to AAA	2026-03-30	2026 Southwest Age Group Regional fast pool
100 Individual Medley	SCY	1:04.85		2025-03-22	Southwest Age Group Regional 2025 venue
200 Individual Medley	SCY	2:10.90	AA+1.51s to AAA	2026-01-17	Cal Invitational Swim Meet venue
400 Individual Medley	SCY	5:01.38	A+11.59s to AA	2025-03-21	Southwest Age Group Regional 2025 venue
100 Freestyle	LCM	1:00.69	AAA+2.00s to AAAA	2025-08-06	2025 Western Zone Age Group Championships fast pool
200 Freestyle	LCM	2:11.68	AAA+4.19s to AAAA	2025-08-07	2025 Western Zone Age Group Championships fast pool
400 Freestyle	LCM	4:41.56	AAA+11.57s to AAAA	2025-08-08	2025 Western Zone Age Group Championships fast pool
100 Butterfly	LCM	1:07.81	AA+1.72s to AAA	2025-08-09	2025 Western Zone Age Group Championships fast pool
200 Individual Medley	LCM	2:33.63	AA+4.04s to AAA	2025-08-07	2025 Western Zone Age Group Championships fast pool
400 Individual Medley	LCM	5:28.96	AA+9.37s to AAA	2025-08-06	2025 Western Zone Age Group Championships fast pool

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.

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

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	SCY	25.63	flat	200 Free Relay	2026-02-08	2026 PSL Super Finals Invitational
50 Freestyle	SCY	23.55	flying	200 Free Relay (leg 2)	2026-03-29	2026 Southwest Age Group Regional
50 Freestyle	SCY	23.44	flying	200 Medley Relay (leg 4)	2026-03-29	2026 Southwest Age Group Regional
100 Freestyle	SCY	50.98	flying	400 Free Relay (leg 4)	2026-03-30	2026 Southwest Age Group Regional
100 Freestyle	SCY	50.62	flying	400 Medley Relay (leg 4)	2026-03-28	2026 Southwest Age Group Regional
100 Butterfly	SCY	1:05.03	flying	400 Medley Relay (leg 3)	2025-03-21	Southwest Age Group Regional 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 13-14 · SCY

2910 points (4/6 events — incomplete)

Event	Time	Points
500 FR SCY	4:59.04	905
200 BR SCY	2:29.79	671
200 IM SCY	2:10.90	741
400 IM SCY	5:01.38	593
200 BK SCY	—	0
200 FL SCY	—	0

IMR 13-14 · SCY

2336 points (3/5 events — incomplete)

Event	Time	Points
200 FR SCY	1:52.47	858
100 FL SCY	58.53	737
200 IM SCY	2:10.90	741
100 BK SCY	—	0
100 BR SCY	—	0

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

PR splits

100 Freestyle SCY 51.48

24.47

27.01

Front half 24.47s · back half 27.01s

200 Freestyle SCY 1:52.47

26.11

28.15

29.35

28.86

Front half 54.26s · back half 58.21s

500 Freestyle SCY 4:59.04

27.01

29.35

30.12

30.32

30.33

30.24

30.68

30.63

30.97

29.39

Front half 147.13s · back half 151.91s

1000 Freestyle SCY 10:26.48

28.25

30.49

31.73

32.72

32.40

32.57

31.88

31.95

31.71

31.61

31.80

31.71

31.82

31.89

31.04

30.82

31.50

31.56

31.57

27.46

Front half 315.31s · back half 311.17s

1650 Freestyle SCY 17:15.51

27.84

30.26

30.97

31.33

31.06

31.35

31.26

31.64

31.46

31.48

31.80

31.68

31.87

31.81

31.38

31.77

31.59

31.80

31.68

31.62

31.79

31.80

31.77

31.62

31.32

32.16

31.83

31.49

31.51

31.29

31.75

31.98

29.55

200 Breaststroke SCY 2:29.79

33.13

38.79

39.49

38.38

Front half 71.92s · back half 77.87s

100 Butterfly SCY 58.53

27.52

31.01

Front half 27.52s · back half 31.01s

100 Individual Medley SCY 1:04.85

31.06

33.79

Front half 31.06s · back half 33.79s

200 Individual Medley SCY 2:10.90

26.91

34.46

39.52

30.01

Front half 61.37s · back half 69.53s

400 Individual Medley SCY 5:01.38

31.81

36.34

39.52

39.60

41.89

43.94

34.23

34.05

Front half 147.27s · back half 154.11s

100 Freestyle LCM 1:00.69

28.87

31.82

Front half 28.87s · back half 31.82s

200 Freestyle LCM 2:11.68

30.74

33.13

34.31

33.50

Front half 63.87s · back half 67.81s

400 Freestyle LCM 4:41.56

68.18

71.25

71.45

70.68

Front half 139.43s · back half 142.13s

100 Butterfly LCM 1:07.81

32.26

35.55

Front half 32.26s · back half 35.55s

200 Individual Medley LCM 2:33.63

74.60

79.03

Front half 74.60s · back half 79.03s

400 Individual Medley LCM 5:28.96

72.76

89.38

95.99

70.83

Front half 162.14s · back half 166.82s

Progression

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

50 Freestyle SCY 24.18 5 swims

100 Freestyle SCY 51.48 8 swims

200 Freestyle SCY 1:52.47 6 swims

500 Freestyle SCY 4:59.04 5 swims

1000 Freestyle SCY 10:26.48 1 swim

1650 Freestyle SCY 17:15.51 3 swims

200 Breaststroke SCY 2:29.79 1 swim

50 Butterfly SCY 26.72 2 swims

100 Butterfly SCY 58.53 7 swims

100 Individual Medley SCY 1:04.85 2 swims

200 Individual Medley SCY 2:10.90 1 swim

400 Individual Medley SCY 5:01.38 2 swims

100 Freestyle LCM 1:00.69 2 swims

200 Freestyle LCM 2:11.68 2 swims

400 Freestyle LCM 4:41.56 1 swim

100 Butterfly LCM 1:07.81 2 swims

200 Individual Medley LCM 2:33.63 2 swims

400 Individual Medley LCM 5:28.96 1 swim