swimstats

Ko Yamamoto

Mage 12INCGACIN

80 plausible swims · 13 meets · 2024-07-12 → 2026-05-31

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 25.36 AAA+0.77s to AAAA 2026-03-22 2026 IN Swimming Age Group Short Course Champ fast pool
100 Freestyle SCY 54.82 AAA+1.13s to AAAA 2026-03-20 2026 IN Swimming Age Group Short Course Champ fast pool
200 Freestyle SCY 1:58.65 AAA+1.66s to AAAA 2026-03-21 2026 IN Swimming Age Group Short Course Champ fast pool
500 Freestyle SCY 5:24.84 AAA+9.85s to AAAA 2026-03-20 2026 IN Swimming Age Group Short Course Champ fast pool
50 Backstroke SCY 29.45 AAA+1.26s to AAAA 2026-03-21 2026 IN Swimming Age Group Short Course Champ fast pool
100 Backstroke SCY 1:09.26 A+3.27s to AA 2025-03-22 2025 IN Swimming Age Group Short Course Champ venue
50 Breaststroke SCY 35.05 A+0.06s to AA 2026-03-07 2026 Spring SE ISI Divisional Championships - venue
100 Breaststroke SCY 1:15.44 A+0.55s to AA 2026-03-08 2026 Spring SE ISI Divisional Championships - venue
100 Butterfly SCY 1:05.92 A+0.03s to AA 2026-03-07 2026 Spring SE ISI Divisional Championships - venue
200 Individual Medley SCY 2:17.80 AAA+5.71s to AAAA 2026-03-22 2026 IN Swimming Age Group Short Course Champ fast pool
50 Freestyle LCM 28.68 AAA+0.59s to AAAA 2026-05-30 2026 Duel in the Pool venue
100 Freestyle LCM 1:01.86 AAA+0.27s to AAAA 2026-05-31 2026 Duel in the Pool venue
200 Freestyle LCM 2:13.77 AAAA 2026-05-30 2026 Duel in the Pool venue
400 Freestyle LCM 4:52.97 AAA+7.08s to AAAA 2026-05-31 2026 Duel in the Pool venue
50 Backstroke LCM 39.47 BB+1.68s to A 2024-07-12 2024 IN Swimming Swimfest venue
100 Breaststroke LCM 1:41.15 B+1.56s to BB 2024-07-14 2024 IN Swimming Swimfest venue
50 Butterfly LCM 38.82 B+0.13s to BB 2024-07-14 2024 IN Swimming Swimfest venue
100 Butterfly LCM 1:31.05 B+3.76s to BB 2024-07-13 2024 IN Swimming Swimfest venue
200 Individual Medley LCM 3:07.67 BB+13.48s to A 2024-07-13 2024 IN Swimming Swimfest venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

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 25.01 flying 200 Free Relay (leg 2) 2026-03-22 2026 IN Swimming Age Group Short Course Champ
50 Backstroke SCY 29.58 flat 200 Medley Relay 2026-03-21 2026 IN Swimming Age Group Short Course Champ
50 Freestyle LCM 33.31 flying 200 Free Relay (leg 4) 2024-07-12 2024 IN Swimming Swimfest

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 11-12 · SCY

3869 points (5/5 events)

EventTime Points
500 FR SCY 5:24.84 911
100 BK SCY 1:09.26 633
100 BR SCY 1:15.44 725
100 FL SCY 1:05.92 720
200 IM SCY 2:17.80 880

IMR 11-12 · LCM

2566 points (4/5 events — incomplete)

EventTime Points
200 FR LCM 2:13.77 1013
50 BK LCM 39.47 562
50 FL LCM 38.82 475
200 IM LCM 3:07.67 516
50 BR LCM— 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 54.82

26.34
28.48

Front half 26.34s · back half 28.48s

200 Freestyle SCY 1:58.65

27.95
30.33
30.48
29.89

Front half 58.28s · back half 60.37s

500 Freestyle SCY 5:24.84

28.93
32.19
32.50
33.26
32.69
33.04
33.50
33.57
32.94
32.22

Front half 159.57s · back half 165.27s

100 Backstroke SCY 1:09.26

33.11
36.15

Front half 33.11s · back half 36.15s

100 Breaststroke SCY 1:15.44

35.65
39.79

Front half 35.65s · back half 39.79s

200 Individual Medley SCY 2:17.80

30.85
33.65
42.15
31.15

Front half 64.50s · back half 73.30s

100 Freestyle LCM 1:01.86

29.65
32.21

Front half 29.65s · back half 32.21s

200 Freestyle LCM 2:13.77

31.79
34.25
33.80
33.93

Front half 66.04s · back half 67.73s

400 Freestyle LCM 4:52.97

32.54
35.85
36.77
37.48
37.36
37.79
37.65
37.53

Front half 142.64s · back half 150.33s

100 Breaststroke LCM 1:41.15

49.12
52.03

Front half 49.12s · back half 52.03s

100 Butterfly LCM 1:31.05

42.59
48.46

Front half 42.59s · back half 48.46s

200 Individual Medley LCM 3:07.67

41.59
47.09
60.04
38.95

Front half 88.68s · back half 98.99s

Progression

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

50 Freestyle SCY 25.36 10 swims
100 Freestyle SCY 54.82 10 swims
200 Freestyle SCY 1:58.65 10 swims
500 Freestyle SCY 5:24.84 1 swim
50 Backstroke SCY 29.45 10 swims
100 Backstroke SCY 1:09.26 8 swims
50 Breaststroke SCY 35.05 2 swims
100 Breaststroke SCY 1:15.44 4 swims
100 Butterfly SCY 1:05.92 2 swims
200 Individual Medley SCY 2:17.80 10 swims
50 Freestyle LCM 28.68 1 swim
100 Freestyle LCM 1:01.86 3 swims
200 Freestyle LCM 2:13.77 2 swims
400 Freestyle LCM 4:52.97 2 swims
50 Backstroke LCM 39.47 1 swim
100 Breaststroke LCM 1:41.15 1 swim
50 Butterfly LCM 38.82 1 swim
100 Butterfly LCM 1:31.05 1 swim
200 Individual Medley LCM 3:07.67 1 swim