Marina Katsumoto

Fage 16MDVAFSCUN

214 plausible swims · 32 meets · 2016-06-04 → 2022-08-07

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	25.78	AA+0.69s to AAA	2022-02-26	2022 MD LSC Senior Championships fast pool
100 Freestyle	SCY	57.49	A+0.50s to AA	2021-03-21	FOX Championship Invitational venue
200 Freestyle	SCY	2:09.43	BB+1.34s to A	2019-12-13	2019 9th HOKI Swim and Tri Winter Champs venue
500 Freestyle	SCY	5:49.75	BB+4.66s to A		2021 FSC & EST Distance Dual venue
1000 Freestyle	SCY	11:56.79	A+28.30s to AA		2021 FSC & EST Distance Dual venue
1650 Freestyle	SCY	21:23.09	BB+80.20s to A	2021-11-13	2021 FSC & EST Distance Dual venue
50 Backstroke	SCY	32.22	BB+1.93s to A	2017-03-04	2017 MD LSC 14 & U CHAMPIONSHIPS venue
100 Backstroke	SCY	1:02.72	A+1.13s to AA	2022-02-26	2022 MD LSC Senior Championships fast pool
200 Backstroke	SCY	2:16.01	A+2.52s to AA	2021-12-09	2021 VA 10th HOKI S&T Winter Champs
50 Breaststroke	SCY	40.43	B+2.04s to BB	2017-03-11	2017 MD LSC JR Champs - NBAC Site venue
100 Breaststroke	SCY	1:30.70	+4.11s to B	2017-03-18	MSC- "B" Championships venue
200 Breaststroke	SCY	2:56.38	B+2.29s to BB	2021-11-06	2021 FOX Fall Inviational Meet 2 venue
50 Butterfly	SCY	30.52	BB+0.43s to A	2017-03-03	2017 MD LSC 14 & U CHAMPIONSHIPS venue
100 Butterfly	SCY	1:00.68	AA+1.89s to AAA	2022-02-25	2022 MD LSC Senior Championships fast pool
200 Butterfly	SCY	2:18.21	A+1.52s to AA	2021-03-20	FOX Championship Invitational venue
100 Individual Medley	SCY	1:12.77		2017-02-11	GBSA - 2017 Last Chance State Championship Q venue
200 Individual Medley	SCY	2:23.47	BB+0.08s to A	2021-12-09	2021 VA 10th HOKI S&T Winter Champs
400 Individual Medley	SCY	5:04.03	A+9.84s to AA	2020-11-21	2020 Virtual Meet November 7 slow pool
50 Freestyle	LCM	29.67	AA+1.08s to AAA	2021-04-11	2021 FOX April Long Course Invitational venue
100 Freestyle	LCM	1:08.24	BB+0.95s to A	2021-04-10	2021 FOX April Long Course Invitational venue
200 Freestyle	LCM	2:36.15	BB+10.86s to A	2021-07-30	2021 MD LSC Summer Championships venue
400 Freestyle	LCM	5:32.65	BB+24.96s to A	2021-07-09	2021 FOX July Long Course Invitational venue
50 Backstroke	LCM	34.83	A+0.84s to AA	2022-04-09	2022 FOX April Long Course Invitational venue
100 Backstroke	LCM	1:13.37	A+1.48s to AA	2022-06-11	2022 Summer Speedo Spectaculare venue
200 Backstroke	LCM	2:37.88	A+3.59s to AA	2022-08-05	2022 MD LSC LC Championships venue
50 Breaststroke	LCM	48.12	+1.23s to B	2016-07-08	2016 RAC SANDBOX INVITATIONAL venue
100 Breaststroke	LCM	1:45.44	+6.25s to B	2016-07-10	2016 RAC SANDBOX INVITATIONAL venue
50 Butterfly	LCM	32.40	A+0.21s to AA	2021-07-10	2021 FOX July Long Course Invitational venue
100 Butterfly	LCM	1:10.04	A+0.75s to AA	2022-06-09	2022 Summer Speedo Spectaculare
200 Butterfly	LCM	2:37.40	A+2.81s to AA	2022-06-11	2022 Summer Speedo Spectaculare venue
200 Individual Medley	LCM	2:44.87	BB+0.48s to A	2022-06-12	2022 Summer Speedo Spectaculare venue
400 Individual Medley	LCM	6:09.69	BB+20.00s to A	2021-07-09	2021 FOX July Long Course Invitational venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.

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	28.07	flat	200 Free Relay	2017-03-02	2017 MD LSC 14 & U CHAMPIONSHIPS
50 Freestyle	SCY	27.40	flying	200 Medley Relay (leg 4)	2017-03-05	2017 MD LSC 14 & U CHAMPIONSHIPS
100 Freestyle	SCY	1:00.55	flying	400 Medley Relay (leg 4)	2017-03-03	2017 MD LSC 14 & U CHAMPIONSHIPS
50 Freestyle	LCM	33.22	flying	200 Free Relay (leg 2)	2016-08-05	2016 MD LSC LC Championships
50 Breaststroke	LCM	55.18	flying	200 Medley Relay (leg 2)	2016-08-06	2016 MD LSC LC Championships

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 15-16 · SCY

3900 points (6/6 events)

Event	Time	Points
500 FR SCY	5:49.75	636
200 BK SCY	2:16.01	716
200 BR SCY	2:56.38	494
200 FL SCY	2:18.21	729
200 IM SCY	2:23.47	654
400 IM SCY	5:04.03	671

IMR 15-16 · SCY

3149 points (5/5 events)

Event	Time	Points
200 FR SCY	2:09.43	644
100 BK SCY	1:02.72	715
100 BR SCY	1:30.70	359
100 FL SCY	1:00.68	777
200 IM SCY	2:23.47	654

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

PR splits

100 Freestyle SCY 57.49

27.03

30.46

Front half 27.03s · back half 30.46s

200 Freestyle SCY 2:09.43 RT 0.77s

28.90

32.37

34.10

34.06

Front half 61.27s · back half 68.16s

1650 Freestyle SCY 21:23.09

29.79

63.64

99.06

134.15

170.01

205.34

241.08

277.72

313.70

349.75

385.71

422.19

458.91

495.59

531.68

569.05

605.54

642.72

679.17

716.79

754.03

799.41

844.18

888.73

938.13

981.66

1024.66

1068.48

1113.04

1157.39

1200.82

1242.15

605.54

642.72

679.17

716.79

754.03

799.41

844.18

888.73

938.13

981.66

1024.66

1068.48

1113.04

1157.38

1200.82

1242.15

1283.09

100 Backstroke SCY 1:02.72

30.52

32.20

Front half 30.52s · back half 32.20s

100 Breaststroke SCY 1:30.70

43.24

47.46

Front half 43.24s · back half 47.46s

200 Breaststroke SCY 2:56.38

38.92

46.48

46.47

44.51

Front half 85.40s · back half 90.98s

100 Butterfly SCY 1:00.68

29.05

31.63

Front half 29.05s · back half 31.63s

200 Butterfly SCY 2:18.21

30.28

34.23

37.34

36.36

Front half 64.51s · back half 73.70s

100 Individual Medley SCY 1:12.77

32.26

40.51

Front half 32.26s · back half 40.51s

400 Individual Medley SCY 5:04.03

30.49

33.69

37.34

37.48

47.51

47.38

35.93

34.21

Front half 139.00s · back half 165.03s

100 Freestyle LCM 1:08.24

32.17

36.07

Front half 32.17s · back half 36.07s

200 Freestyle LCM 2:36.15

33.95

39.83

41.54

40.83

Front half 73.78s · back half 82.37s

400 Freestyle LCM 5:32.65

35.18

40.85

44.47

42.82

43.33

42.77

41.66

41.57

Front half 163.32s · back half 169.33s

100 Backstroke LCM 1:13.37

35.96

37.41

Front half 35.96s · back half 37.41s

200 Backstroke LCM 2:37.88

36.30

39.09

41.06

41.43

Front half 75.39s · back half 82.49s

100 Breaststroke LCM 1:45.44

49.16

56.28

Front half 49.16s · back half 56.28s

200 Butterfly LCM 2:37.40

34.98

39.40

40.50

42.52

Front half 74.38s · back half 83.02s

200 Individual Medley LCM 2:44.87

34.07

43.34

51.45

36.01

Front half 77.41s · back half 87.46s

Reaction time

fastest 0.72s average 0.914s slowest 1.61s 5 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 25.78 15 swims

100 Freestyle SCY 57.49 11 swims

200 Freestyle SCY 2:09.43 10 swims

500 Freestyle SCY 5:49.75 5 swims

1000 Freestyle SCY 11:56.79 0 swims

1650 Freestyle SCY 21:23.09 1 swim

50 Backstroke SCY 32.22 2 swims

100 Backstroke SCY 1:02.72 14 swims

200 Backstroke SCY 2:16.01 14 swims

50 Breaststroke SCY 40.43 2 swims

100 Breaststroke SCY 1:30.70 1 swim

200 Breaststroke SCY 2:56.38 1 swim

50 Butterfly SCY 30.52 3 swims

100 Butterfly SCY 1:00.68 16 swims

200 Butterfly SCY 2:18.21 10 swims

100 Individual Medley SCY 1:12.77 3 swims

200 Individual Medley SCY 2:23.47 7 swims

400 Individual Medley SCY 5:04.03 6 swims

50 Freestyle LCM 29.67 9 swims

100 Freestyle LCM 1:08.24 8 swims

200 Freestyle LCM 2:36.15 10 swims

400 Freestyle LCM 5:32.65 4 swims

50 Backstroke LCM 34.83 6 swims

100 Backstroke LCM 1:13.37 12 swims

200 Backstroke LCM 2:37.88 8 swims

50 Breaststroke LCM 48.12 1 swim

100 Breaststroke LCM 1:45.44 1 swim

50 Butterfly LCM 32.40 6 swims

100 Butterfly LCM 1:10.04 13 swims

200 Butterfly LCM 2:37.40 4 swims

200 Individual Medley LCM 2:44.87 7 swims

400 Individual Medley LCM 6:09.69 2 swims