swimstats

Keelyn Underdown

Fage 17COFLVALAODACSJAC

164 plausible swims · 26 meets · 2021-10-16 → 2026-06-27

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 27.61 BB+0.42s to A·+1.52s to Sectionals 2026-02-21 2026 Area 1 Spring Championshipsfast pool
100 Freestyle SCY 59.20 BB+0.21s to A·+2.71s to Sectionals 2025-03-01 2025 Area 1 Spring Championshipsvenue
200 Freestyle SCY 2:10.05 BB+2.36s to A·+7.66s to Sectionals 2026-02-21 2026 Area 1 Spring Championshipsfast pool
500 Freestyle SCY 5:53.78 BB+9.49s to A·+24.39s to Sectionals 2025-10-25 2025 SJAC Halloween Invitationalvenue
100 Backstroke SCY 1:18.16 +3.67s to B·+16.77s to Sectionals 2022-02-26 2022 VA SE 13&Over Disrict Championshipsvenue
200 Backstroke SCY 2:32.18 B+2.09s to BB·+18.89s to Sectionals 2025-10-25 2025 SJAC Halloween Invitationalvenue
50 Breaststroke SCY 37.69 BB+2.50s to A·+7.90s to Futures 2024-02-24 2024 Area 1 Spring Championshipsvenue
100 Breaststroke SCY 1:22.90 B+3.41s to BB·+12.31s to Sectionals 2024-02-25 2024 Area 1 Spring Championshipsvenue
200 Breaststroke SCY 2:55.45 B+1.96s to BB·+22.66s to Sectionals 2025-10-26 2025 SJAC Halloween Invitationalvenue
50 Butterfly SCY 30.90 BB+1.01s to A·+5.21s to Futures 2024-02-25 2024 Area 1 Spring Championshipsvenue
100 Butterfly SCY 1:15.22 +1.13s to B·+14.13s to Sectionals 2024-02-03 Groundhog Day Meetvenue
200 Individual Medley SCY 2:30.38 BB+7.99s to A·+13.89s to Sectionals 2026-02-22 2026 Area 1 Spring Championshipsfast pool
400 Individual Medley SCY 5:17.47 BB+13.98s to A·+25.88s to Sectionals 2024-10-12 October Spook-Outvenue
50 Freestyle LCM 31.66 BB+0.67s to A·+2.07s to Sectionals 2024-06-29 2024 FAST Independence Invitationalvenue
100 Freestyle LCM 1:07.39 BB+0.30s to A·+3.00s to Sectionals 2025-06-22 2025 FAST Independence Invitationalvenue
200 Freestyle LCM 2:29.14 BB+3.95s to A·+10.15s to Sectionals 2025-06-20 2025 FAST Independence Invitationalvenue
400 Freestyle LCM 5:13.42 BB+6.73s to A·+21.63s to Sectionals 2024-06-29 2024 FAST Independence Invitationalvenue
50 Backstroke LCM 37.75 BB+2.26s to A·+6.86s to Futures 2025-06-22 2025 FAST Independence Invitationalvenue
100 Backstroke LCM 1:21.52 B+0.63s to BB·+10.13s to Sectionals 2025-06-20 2025 FAST Independence Invitationalvenue
200 Backstroke LCM 3:03.98 B+8.79s to BB·+30.59s to Sectionals 2024-05-05 2024 May Flowers Swim Meetvenue
50 Breaststroke LCM 43.60 B+0.61s to BB·+8.81s to Futures 2025-06-21 2025 FAST Independence Invitationalvenue
100 Breaststroke LCM 1:37.39 B+6.10s to BB·+16.40s to Sectionals 2026-06-26 2026 SwimRise Season Finalevenue
200 Breaststroke LCM 3:27.20 B+9.31s to BB·+32.34s to Sectionals 2024-06-28 2024 FAST Independence Invitationalvenue
50 Butterfly LCM 35.23 BB+1.84s to A·+5.74s to Futures 2026-06-26 2026 SwimRise Season Finalevenue
100 Butterfly LCM 1:18.95 B+0.66s to BB·+9.66s to Sectionals 2025-06-21 2025 FAST Independence Invitationalvenue
200 Individual Medley LCM 2:50.12 BB+6.53s to A·+13.13s to Sectionals 2026-06-27 2026 SwimRise Season Finalevenue
400 Individual Medley LCM 6:11.59 BB+24.60s to A·+39.10s to Sectionals 2024-05-04 2024 May Flowers Swim Meetvenue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.

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 27.67 flying 200 Free Relay (leg 2) 2026-02-21 2026 Area 1 Spring Championships
100 Freestyle SCY 1:05.78 flying 400 Medley Relay (leg 4) 2021-12-10 2021 VA 10th HOKI S&T Winter Champs
100 Freestyle SCY 1:05.99 flying 400 Free Relay (leg 2) 2021-12-11 2021 VA 10th HOKI S&T Winter Champs
50 Breaststroke SCY 38.25 flying 200 Medley Relay (leg 2) 2024-02-25 2024 Area 1 Spring Championships
50 Butterfly SCY 30.36 flying 200 Medley Relay (leg 3) 2025-03-02 2025 Area 1 Spring 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 17-18 · SCY

2674 points (5/6 events — incomplete)

EventTime Points
500 FR SCY 5:53.78 593
200 BK SCY 2:32.18 479
200 BR SCY 2:55.45 491
200 IM SCY 2:30.38 543
400 IM SCY 5:17.47 568
200 FL SCY— 0

IMR 17-18 · LCM

2598 points (5/5 events)

EventTime Points
200 FR LCM 2:29.14 600
100 BK LCM 1:21.52 495
100 BR LCM 1:37.39 422
100 FL LCM 1:18.95 500
200 IM LCM 2:50.12 581

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

PR splits

100 Freestyle SCY 59.20

28.28
30.92

Front half 28.28s · back half 30.92s

200 Freestyle SCY 2:10.05

30.43
33.14
33.72
32.76

Front half 63.57s · back half 66.48s

500 Freestyle SCY 5:53.78

31.91
35.57
35.31
36.20
35.92
35.88
36.05
35.55
36.11
35.28

Front half 174.91s · back half 178.87s

100 Backstroke SCY 1:18.16

39.22
38.94

Front half 39.22s · back half 38.94s

200 Backstroke SCY 2:32.18

37.58
38.50
38.22
37.88

Front half 76.08s · back half 76.10s

100 Breaststroke SCY 1:22.90

39.02
43.88

Front half 39.02s · back half 43.88s

200 Breaststroke SCY 2:55.45

39.04
44.70
45.82
45.89

Front half 83.74s · back half 91.71s

100 Butterfly SCY 1:15.22

35.31
39.91

Front half 35.31s · back half 39.91s

200 Individual Medley SCY 2:30.38

33.50
37.56
46.34
32.98

Front half 71.06s · back half 79.32s

400 Individual Medley SCY 5:17.47

33.89
40.06
41.06
40.02
46.36
46.15
35.64
34.29

Front half 155.03s · back half 162.44s

100 Freestyle LCM 1:07.39

32.33
35.06

Front half 32.33s · back half 35.06s

200 Freestyle LCM 2:29.14

35.33
37.97
38.59
37.25

Front half 73.30s · back half 75.84s

400 Freestyle LCM 5:13.42 RT 0.79s

35.58
39.43
40.11
39.88
40.72
39.78
39.36
38.56

Front half 155.00s · back half 158.42s

100 Backstroke LCM 1:21.52

39.86
41.66

Front half 39.86s · back half 41.66s

200 Backstroke LCM 3:03.98

43.35
45.57
48.32
46.74

Front half 88.92s · back half 95.06s

200 Breaststroke LCM 3:27.20 RT 0.82s

99.90
107.30

Front half 99.90s · back half 107.30s

100 Butterfly LCM 1:18.95

36.28
42.67

Front half 36.28s · back half 42.67s

200 Individual Medley LCM 2:50.12

80.70
89.42

Front half 80.70s · back half 89.42s

400 Individual Medley LCM 6:11.59

40.47
48.85
48.92
47.81
52.27
53.43
40.40
39.44

Front half 186.05s · back half 185.54s

Reaction time

fastest 0.70s average 0.790s slowest 0.83s 6 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 27.61 13 swims
100 Freestyle SCY 59.20 12 swims
200 Freestyle SCY 2:10.05 11 swims
500 Freestyle SCY 5:53.78 5 swims
100 Backstroke SCY 1:18.16 3 swims
200 Backstroke SCY 2:32.18 6 swims
50 Breaststroke SCY 37.69 5 swims
100 Breaststroke SCY 1:22.90 12 swims
200 Breaststroke SCY 2:55.45 9 swims
50 Butterfly SCY 30.90 1 swim
100 Butterfly SCY 1:15.22 2 swims
200 Individual Medley SCY 2:30.38 14 swims
400 Individual Medley SCY 5:17.47 6 swims
50 Freestyle LCM 31.66 8 swims
100 Freestyle LCM 1:07.39 9 swims
200 Freestyle LCM 2:29.14 10 swims
400 Freestyle LCM 5:13.42 3 swims
50 Backstroke LCM 37.75 1 swim
100 Backstroke LCM 1:21.52 4 swims
200 Backstroke LCM 3:03.98 1 swim
50 Breaststroke LCM 43.60 3 swims
100 Breaststroke LCM 1:37.39 8 swims
200 Breaststroke LCM 3:27.20 3 swims
50 Butterfly LCM 35.23 1 swim
100 Butterfly LCM 1:18.95 3 swims
200 Individual Medley LCM 2:50.12 9 swims
400 Individual Medley LCM 6:11.59 2 swims