swimstats

Marina Katsumoto

Fage 16MDVAFSCUN

199 plausible swims · 31 meets · 2016-06-04 → 2022-08-07

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 25.78 AA+0.69s to AAA·+0.99s to Sectionals 2022-02-26 2022 MD LSC Senior Championshipsvenue
100 Freestyle SCY 57.49 A+0.50s to AA·+4.40s to Sectionals 2021-03-21 FOX Championship Invitationalvenue
200 Freestyle SCY 2:09.43 BB+1.34s to A·+14.44s to Sectionals 2019-12-13 2019 9th HOKI Swim and Tri Winter Champsvenue
500 Freestyle SCY 5:49.75 BB+4.66s to A·+40.96s to Sectionals 2021 FSC & EST Distance Dualvenue
1000 Freestyle SCY 11:56.79 A+28.30s to AA·+77.80s to Sectionals 2021 FSC & EST Distance Dualvenue
1650 Freestyle SCY 21:23.09 BB+80.20s to A·+213.70s to Sectionals 2021-11-13 2021 FSC & EST Distance Dualvenue
50 Backstroke SCY 32.22 BB+1.93s to A·+5.93s to Futures 2017-03-04 2017 MD LSC 14 & U CHAMPIONSHIPSvenue
100 Backstroke SCY 1:02.72 A+1.13s to AA·+3.43s to Sectionals 2022-02-26 2022 MD LSC Senior Championshipsvenue
200 Backstroke SCY 2:16.01 A+2.52s to AA·+7.12s to Sectionals 2021-12-12 2021 VA 10th HOKI S&T Winter Champsvenue
50 Breaststroke SCY 40.43 B+2.04s to BB·+10.64s to Futures 2017-03-11 2017 MD LSC JR Champs - NBAC Sitevenue
100 Breaststroke SCY 1:30.70 +4.11s to B·+22.51s to Sectionals 2017-03-18 MSC- "B" Championshipsvenue
200 Breaststroke SCY 2:56.38 B+2.29s to BB·+26.99s to Sectionals 2021-11-06 2021 FOX Fall Inviational Meet 2venue
50 Butterfly SCY 30.52 BB+0.43s to A·+4.83s to Futures 2017-03-03 2017 MD LSC 14 & U CHAMPIONSHIPSvenue
100 Butterfly SCY 1:00.68 AA+1.89s to AAA·+2.19s to Sectionals 2022-02-25 2022 MD LSC Senior Championshipsvenue
200 Butterfly SCY 2:18.21 A+1.52s to AA·+6.12s to Sectionals 2021-03-20 FOX Championship Invitationalvenue
100 Individual Medley SCY 1:12.77 2017-02-11 GBSA - 2017 Last Chance State Championship Qvenue
200 Individual Medley SCY 2:23.47 BB+0.08s to A·+12.78s to Sectionals 2021-12-09 2021 VA 10th HOKI S&T Winter Champsvenue
400 Individual Medley SCY 5:04.03 A+9.84s to AA·+25.64s to Sectionals 2020-11-21 2020 Virtual Meet November 7slow pool
50 Freestyle LCM 29.67 AA+1.08s to AAA·+1.38s to Sectionals 2021-04-11 2021 FOX April Long Course Invitationalvenue
100 Freestyle LCM 1:08.24 BB+0.95s to A·+7.55s to Sectionals 2021-04-10 2021 FOX April Long Course Invitationalvenue
200 Freestyle LCM 2:36.15 BB+10.86s to A·+25.26s to Sectionals 2021-07-30 2021 MD LSC Summer Championshipsvenue
400 Freestyle LCM 5:32.65 BB+24.96s to A·+54.96s to Sectionals 2021-07-09 2021 FOX July Long Course Invitationalvenue
50 Backstroke LCM 34.83 A+0.84s to AA·+3.94s to Futures 2022-04-09 2022 FOX April Long Course Invitationalvenue
100 Backstroke LCM 1:13.37 A+1.48s to AA·+5.48s to Sectionals 2022-06-11 2022 Summer Speedo Spectacularevenue
200 Backstroke LCM 2:37.88 A+3.59s to AA·+11.69s to Sectionals 2022-08-05 2022 MD LSC LC Championshipsvenue
50 Breaststroke LCM 48.12 +1.23s to B·+13.33s to Futures 2016-07-08 2016 RAC SANDBOX INVITATIONALvenue
100 Breaststroke LCM 1:45.44 +6.25s to B·+27.55s to Sectionals 2016-07-10 2016 RAC SANDBOX INVITATIONALvenue
50 Butterfly LCM 32.40 A+0.21s to AA·+2.91s to Futures 2021-07-10 2021 FOX July Long Course Invitationalvenue
100 Butterfly LCM 1:10.04 A+0.75s to AA·+3.75s to Sectionals 2022-06-10 2022 Summer Speedo Spectacularevenue
200 Butterfly LCM 2:37.40 A+2.81s to AA·+8.31s to Sectionals 2022-06-11 2022 Summer Speedo Spectacularevenue
200 Individual Medley LCM 2:44.87 BB+0.48s to A·+16.48s to Sectionals 2022-06-12 2022 Summer Speedo Spectacularevenue
400 Individual Medley LCM 6:09.69 BB+20.00s to A·+49.20s to Sectionals 2021-07-09 2021 FOX July Long Course Invitationalvenue

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

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 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
50 Freestyle SCY 25.68 flying 200 Free Relay (leg 3) 2021-12-19 2021 FOX Winter Clean Up Meet
100 Freestyle SCY 56.55 flying 400 Free Relay (leg 4) 2019-12-14 2019 9th HOKI Swim and Tri Winter Champs
100 Freestyle SCY 1:00.55 flying 400 Medley Relay (leg 4) 2017-03-03 2017 MD LSC 14 & U CHAMPIONSHIPS
100 Backstroke SCY 1:04.24 flat 400 Medley Relay 2019-12-13 2019 9th HOKI Swim and Tri Winter Champs
100 Butterfly SCY 1:00.63 flying 400 Medley Relay (leg 3) 2021-12-10 2021 VA 10th HOKI S&T Winter Champs
50 Freestyle LCM 33.22 flying 200 Free Relay (leg 2) 2016-08-05 2016 MD LSC LC Championships
100 Backstroke LCM 1:14.81 flat 400 Medley Relay 2021-07-31 2021 MD LSC Summer 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)

EventTime 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)

EventTime 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

200 Backstroke SCY 2:16.01

31.99
34.58
35.34
34.10

Front half 66.57s · back half 69.44s

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

200 Individual Medley SCY 2:23.47

29.45
35.79
45.18
33.05

Front half 65.24s · back half 78.23s

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

100 Butterfly LCM 1:10.04

32.34
37.70

Front half 32.34s · back half 37.70s

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.

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 25.78 13 swims
100 Freestyle SCY 57.49 10 swims
200 Freestyle SCY 2:09.43 8 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 13 swims
200 Backstroke SCY 2:16.01 11 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 15 swims
200 Butterfly SCY 2:18.21 8 swims
100 Individual Medley SCY 1:12.77 3 swims
200 Individual Medley SCY 2:23.47 6 swims
400 Individual Medley SCY 5:04.03 5 swims
50 Freestyle LCM 29.67 9 swims
100 Freestyle LCM 1:08.24 8 swims
200 Freestyle LCM 2:36.15 7 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 12 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