Kaisei Ishikubo

Mage 15CCORPCSIDACA

74 plausible swims · 11 meets · 2025-01-18 → 2026-06-28

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	25.54	BB+0.85s to A	2026-03-29	LAMV C/B/A+ Meet venue
100 Freestyle	SCY	57.33	BB+3.04s to A	2026-01-25	Orinda Aquatics SCY Senior Open Meet venue
200 Freestyle	SCY	2:05.03	BB+6.44s to A	2026-02-13	2026 SI Presidents' Day Senior Classic - copi
500 Freestyle	SCY	5:46.82	BB+24.23s to A	2026-03-28	LAMV C/B/A+ Meet venue
50 Backstroke	SCY	32.31	B+2.02s to BB	2026-02-13	2026 SI Presidents' Day Senior Classic - copi
100 Backstroke	SCY	1:11.86	+2.37s to B	2025-01-18	2025 Thunderbolt Round Robin Invitational venue
200 Backstroke	SCY	2:35.11	+3.32s to B	2025-01-18	2025 Thunderbolt Round Robin Invitational venue
50 Breaststroke	SCY	33.00	BB+0.91s to A	2026-02-13	2026 SI Presidents' Day Senior Classic - copi
100 Breaststroke	SCY	1:07.34	A+2.75s to AA	2026-03-29	LAMV C/B/A+ Meet venue
200 Breaststroke	SCY	2:28.72	BB+1.73s to A	2026-02-13	2026 SI Presidents' Day Senior Classic - copi
50 Butterfly	SCY	31.85	B+1.76s to BB	2026-02-13	2026 SI Presidents' Day Senior Classic - copi
100 Butterfly	SCY	1:10.07	+1.38s to B	2026-01-24	Orinda Aquatics SCY Senior Open Meet venue
200 Individual Medley	SCY	2:20.80	BB+8.61s to A	2026-03-28	LAMV C/B/A+ Meet venue
400 Individual Medley	SCY	5:06.07	BB+21.88s to A	2026-05-10	2026 Post-CCS SR Walk-On Meet venue
50 Freestyle	LCM	29.39	BB+0.80s to A	2026-06-28	Pacific Swimming Long Course Senior Open venue
100 Freestyle	LCM	1:04.48	BB+2.19s to A	2026-06-13	2026 DACA LC CBA Meet venue
200 Freestyle	LCM	2:22.32	BB+5.13s to A	2026-06-28	Pacific Swimming Long Course Senior Open venue
400 Freestyle	LCM	5:19.42	B+3.03s to BB	2026-05-10	2026 Post-CCS SR Walk-On Meet venue
100 Backstroke	LCM	1:25.82	+4.63s to B	2025-06-21	Fresno Dolphins Swim Team A/B Modified Long Course Invitational
200 Backstroke	LCM	2:52.97	B+9.28s to BB	2025-06-21	2025 FDST June A/B Modified LC Invitational venue
100 Breaststroke	LCM	1:16.76	A+1.67s to AA	2026-06-28	Pacific Swimming Long Course Senior Open venue
200 Breaststroke	LCM	2:49.97	A+5.78s to AA	2026-05-17	2026 DACA LC CBA+ venue
100 Butterfly	LCM	1:17.61	B+4.72s to BB	2026-05-17	2026 DACA LC CBA+ venue
200 Individual Medley	LCM	2:37.71	BB+4.52s to A	2026-06-13	2026 DACA LC CBA Meet venue
400 Individual Medley	LCM	5:38.04	BB+8.75s to A	2026-06-12	2026 DACA LC CBA Meet venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.

Fastest relay legs

Leg	Course	Time	Start	Relay	Date	Meet
50 Breaststroke	SCY	31.79	flying	200 Medley Relay (leg 2)	2025-01-20	2025 Thunderbolt Round Robin Invitational

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 · LCM

2691 points (5/6 events — incomplete)

Event	Time	Points
400 FR LCM	5:19.42	482
200 BK LCM	2:52.97	416
200 BR LCM	2:49.97	632
200 IM LCM	2:37.71	587
400 IM LCM	5:38.04	574
200 FL LCM	—	0

IMR 15-16 · LCM

2557 points (5/5 events)

Event	Time	Points
200 FR LCM	2:22.32	562
100 BK LCM	1:25.82	333
100 BR LCM	1:16.76	667
100 FL LCM	1:17.61	408
200 IM LCM	2:37.71	587

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

PR splits

100 Freestyle SCY 57.33

28.12

29.21

Front half 28.12s · back half 29.21s

500 Freestyle SCY 5:46.82

29.65

34.43

35.03

36.03

37.02

36.61

35.14

34.42

34.31

34.18

Front half 172.16s · back half 174.66s

100 Backstroke SCY 1:11.86

35.68

36.18

Front half 35.68s · back half 36.18s

200 Backstroke SCY 2:35.11

37.09

38.89

39.86

39.27

Front half 75.98s · back half 79.13s

100 Breaststroke SCY 1:07.34

32.60

34.74

Front half 32.60s · back half 34.74s

100 Butterfly SCY 1:10.07

32.61

37.46

Front half 32.61s · back half 37.46s

200 Individual Medley SCY 2:20.80

32.30

37.91

38.90

31.69

Front half 70.21s · back half 70.59s

400 Individual Medley SCY 5:06.07

33.56

38.59

40.07

39.43

40.45

41.28

37.09

35.60

Front half 151.65s · back half 154.42s

200 Freestyle LCM 2:22.32

70.80

71.52

Front half 70.80s · back half 71.52s

400 Freestyle LCM 5:19.42

35.11

39.81

41.34

41.11

43.00

40.66

40.32

38.07

Front half 157.37s · back half 162.05s

200 Backstroke LCM 2:52.97

41.38

44.11

45.12

42.36

Front half 85.49s · back half 87.48s

Progression

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

50 Freestyle SCY 25.54 5 swims

100 Freestyle SCY 57.33 3 swims

200 Freestyle SCY 2:05.03 5 swims

500 Freestyle SCY 5:46.82 1 swim

50 Backstroke SCY 32.31 2 swims

100 Backstroke SCY 1:11.86 1 swim

200 Backstroke SCY 2:35.11 1 swim

50 Breaststroke SCY 33.00 2 swims

100 Breaststroke SCY 1:07.34 6 swims

200 Breaststroke SCY 2:28.72 6 swims

50 Butterfly SCY 31.85 2 swims

100 Butterfly SCY 1:10.07 2 swims

200 Individual Medley SCY 2:20.80 3 swims

400 Individual Medley SCY 5:06.07 2 swims

50 Freestyle LCM 29.39 4 swims

100 Freestyle LCM 1:04.48 4 swims

200 Freestyle LCM 2:22.32 4 swims

400 Freestyle LCM 5:19.42 1 swim

100 Backstroke LCM 1:25.82 2 swims

200 Backstroke LCM 2:52.97 2 swims

100 Breaststroke LCM 1:16.76 6 swims

200 Breaststroke LCM 2:49.97 4 swims

100 Butterfly LCM 1:17.61 1 swim

200 Individual Medley LCM 2:37.71 4 swims

400 Individual Medley LCM 5:38.04 1 swim