swimstats

Bailey Koo

Mage 16BDCOFLGUMTSTAGSBSSGULF

142 plausible swims · 23 meets · 2020-03-07 → 2026-08-01

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 21.22 AAAA·Futures ✓+0.73s to Winter JNs 2026-03-14 2026 Fl Swimming Spring Senior Championshipsvenue
100 Freestyle SCY 46.95 AAA+0.16s to AAAA·Sectionals ✓+0.56s to Futures 2025-03-07 Meet Results for
200 Freestyle SCY 1:47.03 AAA+4.84s to AAAA·+1.24s to Sectionals 2025-03-07 Meet Results for
100 Backstroke SCY 52.06 AAA+1.27s to AAAA·Sectionals ✓+0.57s to Futures 2025-03-07 Meet Results for
100 Breaststroke SCY 1:04.13 A+0.94s to AA·+1.44s to Sectionals 2026-03-15 2026 Fl Swimming Spring Senior Championshipsvenue
200 Breaststroke SCY 2:26.84 BB+3.65s to A·+7.55s to Sectionals 2024-01-13 2024 TWST Speedo Winter Classic Invitationalvenue
100 Butterfly SCY 54.51 AA+1.62s to AAA·+1.82s to Sectionals 2025-03-07 Meet Results for
100 Individual Medley SCY 1:16.40 2020-03-07 2020 Short Course TAGS Championshipsvenue
200 Individual Medley SCY 2:02.18 AA+3.29s to AAA·+2.79s to Sectionals 2025-03-07 Meet Results for
400 Individual Medley SCY 4:37.75 BB+0.06s to A·+25.76s to Sectionals 2024-10-12 MAC October Open 2024venue
50 Freestyle LCM 23.72 AAAA·Jr Nationals ✓+0.43s to US Open 2026-07-29 2026 TYR Futures Championships Austin
100 Freestyle LCM 54.93 AAA+1.04s to AAAA·Sectionals ✓+1.34s to Futures 2026-07-30 2026 TYR Futures Championships Austinfast pool
200 Freestyle LCM 2:05.58 AA+1.99s to AAA·+4.69s to Sectionals 2024-07-19 2024 Texas Age Group Swimming LC Champsvenue
50 Backstroke LCM 28.64 AAA+0.25s to AAAA·Sectionals ✓+0.75s to Futures 2026-07-19 2026 Florida Summer Senior Championshipsvenue
100 Backstroke LCM 1:03.29 AA+0.80s to AAA·Sectionals ✓+2.70s to Futures 2026-04-11 2026 April Classicvenue
100 Breaststroke LCM 1:14.39 A+0.60s to AA·+2.00s to Sectionals 2026-04-12 2026 April Classicvenue
200 Breaststroke LCM 2:53.78 BB+6.29s to A·+13.39s to Sectionals 2025-04-25 Meet Results for
50 Butterfly LCM 27.64 AAA+0.75s to AAAA·Sectionals ✓+1.35s to Futures 2026-07-29 2026 TYR Futures Championships Austin
100 Butterfly LCM 1:03.19 AA+2.70s to AAA·+2.70s to Sectionals 2026-04-11 2026 April Classicvenue
200 Butterfly LCM 2:34.72 BB+7.03s to A·+17.33s to Sectionals 2025-04-25 Meet Results for
200 Individual Medley LCM 2:26.39 A+1.40s to AA·+8.70s to Sectionals 2026-02-14 Florida Long Course Winter Invitationalvenue
400 Individual Medley LCM 5:26.91 BB+4.52s to A·+33.02s to Sectionals 2024-04-21 2024 Aggieland April 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 21.45 flat 200 Free Relay 2026-03-13 2026 Fl Swimming Spring Senior Championships
50 Freestyle SCY 21.19 flying 200 Medley Relay (leg 4) 2025-12-05 RAFC Winter Classic
50 Freestyle SCY 21.99 flying 200 Free Relay (leg 2) 2024-03-02 2024 Texas Age Group Swimming Short Course Ch
100 Freestyle SCY 48.33 flying 400 Free Relay (leg 3) 2024-03-01 2024 Texas Age Group Swimming Short Course Ch
100 Freestyle SCY 48.78 flying 400 Medley Relay (leg 4) 2024-03-03 2024 Texas Age Group Swimming Short Course Ch
200 Freestyle SCY 1:48.88 flat 800 Free Relay 2024-02-29 2024 Texas Age Group Swimming Short Course Ch
50 Freestyle LCM 24.10 flying 200 Free Relay (leg 3) 2026-07-29 2026 TYR Futures Championships Austin
50 Freestyle LCM 25.18 flying 200 Medley Relay (leg 4) 2024-06-02 2024 LSC Duel in the Pool
100 Freestyle LCM 55.78 flat 400 Free Relay 2024-07-19 2024 Texas Age Group Swimming LC Champs
200 Freestyle LCM 2:07.50 flying 800 Free Relay (leg 2) 2024-07-20 2024 Texas Age Group Swimming LC Champs

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

2536 points (4/6 events — incomplete)

EventTime Points
200 BR LCM 2:53.78 591
200 FL LCM 2:34.72 576
200 IM LCM 2:26.39 734
400 IM LCM 5:26.91 635
400 FR LCM— 0
200 BK LCM— 0

IMR 15-16 · SCY

4099 points (5/5 events)

EventTime Points
200 FR SCY 1:47.03 865
100 BK SCY 52.06 923
100 BR SCY 1:04.13 727
100 FL SCY 54.51 789
200 IM SCY 2:02.18 795

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

PR splits

100 Breaststroke SCY 1:04.13

30.09
34.04

Front half 30.09s · back half 34.04s

200 Breaststroke SCY 2:26.84

32.65
37.33
37.82
39.04

Front half 69.98s · back half 76.86s

100 Individual Medley SCY 1:16.40

34.61
41.79

Front half 34.61s · back half 41.79s

400 Individual Medley SCY 4:37.75

29.08
33.95
36.24
35.29
40.23
40.85
31.36
30.75

Front half 134.56s · back half 143.19s

100 Freestyle LCM 54.93 RT 0.62s

26.30
28.63

Front half 26.30s · back half 28.63s

200 Freestyle LCM 2:05.58

28.70
31.78
32.01
33.09

Front half 60.48s · back half 65.10s

100 Backstroke LCM 1:03.29

29.92
33.37

Front half 29.92s · back half 33.37s

100 Breaststroke LCM 1:14.39

34.88
39.51

Front half 34.88s · back half 39.51s

100 Butterfly LCM 1:03.19

28.39
34.80

Front half 28.39s · back half 34.80s

200 Individual Medley LCM 2:26.39

29.34
37.82
42.76
36.47

Front half 67.16s · back half 79.23s

400 Individual Medley LCM 5:26.91

73.04
80.80
96.53
76.54

Front half 153.84s · back half 173.07s

Reaction time

fastest 0.52s average 0.669s slowest 1.14s 12 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 21.22 16 swims
100 Freestyle SCY 46.95 13 swims
200 Freestyle SCY 1:47.03 7 swims
100 Backstroke SCY 52.06 10 swims
100 Breaststroke SCY 1:04.13 5 swims
200 Breaststroke SCY 2:26.84 2 swims
100 Butterfly SCY 54.51 8 swims
100 Individual Medley SCY 1:16.40 1 swim
200 Individual Medley SCY 2:02.18 7 swims
400 Individual Medley SCY 4:37.75 1 swim
50 Freestyle LCM 23.72 18 swims
100 Freestyle LCM 54.93 13 swims
200 Freestyle LCM 2:05.58 9 swims
50 Backstroke LCM 28.64 3 swims
100 Backstroke LCM 1:03.29 9 swims
100 Breaststroke LCM 1:14.39 4 swims
200 Breaststroke LCM 2:53.78 1 swim
50 Butterfly LCM 27.64 6 swims
100 Butterfly LCM 1:03.19 5 swims
200 Butterfly LCM 2:34.72 1 swim
200 Individual Medley LCM 2:26.39 2 swims
400 Individual Medley LCM 5:26.91 1 swim