Liam Rosenbach

Mage 18FLMAMDNCYY

209 plausible swims · 24 meets · 2021-12-10 → 2026-07-12

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 22.67 AA+0.98s to AAA·+0.38s to Sectionals 2024-02-05 John deBarbadillo Invite
100 Freestyle SCY 49.05 AA+1.36s to AAA·+0.76s to Sectionals 2026-01-18 Winterfest 2026venue
200 Freestyle SCY 1:48.92 AA+3.53s to AAA·+3.13s to Sectionals 2026-01-17 Winterfest 2026venue
500 Freestyle SCY 5:01.78 A+2.09s to AA·+15.69s to Sectionals 2024-02-05 John deBarbadillo Invite
1650 Freestyle SCY 17:11.58 AA+27.79s to AAA·+22.89s to Sectionals 2024-10-07 Bill Schmidt Invite
50 Backstroke SCY 26.19 A+0.80s to AA·+0.50s to Sectionals 2024-10-07 Bill Schmidt Invite
100 Backstroke SCY 55.15 A+1.26s to AA·+0.06s to Sectionals 2026-01-17 Winterfest 2026venue
200 Backstroke SCY 1:57.04 AA+3.55s to AAA·Sectionals ✓+4.25s to Futures 2025-12-14 32nd Annual YOTA/Arena Capital Classicvenue
100 Breaststroke SCY 1:03.90 A+2.31s to AA·+1.21s to Sectionals 2024-10-07 Bill Schmidt Invite
200 Breaststroke SCY 2:22.40 BB+2.81s to A·+3.11s to Sectionals 2024-10-07 Bill Schmidt Invite
100 Butterfly SCY 54.94 A+1.05s to AA·+2.25s to Sectionals 2025-11-07 2025 EMAC Fall Invitational 11 & Over A/BB/C
200 Butterfly SCY 2:02.96 A+1.77s to AA·+4.47s to Sectionals 2025-12-13 32nd Annual YOTA/Arena Capital Classicvenue
200 Individual Medley SCY 2:02.84 A+1.35s to AA·+3.45s to Sectionals 2025-11-07 2025 EMAC Fall Invitational 11 & Over A/BB/C
400 Individual Medley SCY 4:22.38 A+0.19s to AA·+10.39s to Sectionals 2026-02-01 YY John deBarbadillo Invite
50 Freestyle LCM 26.60 A+0.31s to AA·+1.01s to Sectionals 2025-04-27 2025 NAAC Carol Chidester Invitevenue
100 Freestyle LCM 58.60 A+0.91s to AA·+3.31s to Sectionals 2024-06-10 Chargers Long Course Closed Invitational
200 Freestyle LCM 2:09.47 A+3.28s to AA·+8.58s to Sectionals 2024-06-10 Chargers Long Course Closed Invitational
400 Freestyle LCM 4:39.05 A+10.06s to AA·+19.96s to Sectionals 2024-05-19 2024 NBAC Spring LC Invitational Meetvenue
800 Freestyle LCM 9:37.48 A+14.19s to AA·+41.89s to Sectionals 2023-07-06 2023 NBAC Mid-Summer Classicvenue
1500 Freestyle LCM 19:18.83 BB+34.14s to A·+124.64s to Sectionals 2024-05-17 2024 NBAC Spring LC Invitational Meetvenue
50 Backstroke LCM 29.66 AA+0.37s to AAA·Sectionals ✓+1.77s to Futures 2024-08-01 2024 YMCA Long Course Championshipsvenue
100 Backstroke LCM 1:02.83 AA+1.44s to AAA·Sectionals ✓+2.24s to Futures 2024-08-02 2024 YMCA Long Course Championshipsvenue
200 Backstroke LCM 2:15.97 AA+2.18s to AAA·Sectionals ✓+4.08s to Futures 2024-07-31 2024 YMCA Long Course Championshipsvenue
100 Breaststroke LCM 1:18.26 BB+3.57s to A·+5.87s to Sectionals 2026-07-10 2026 NBAC Mid Summer Classicvenue
200 Breaststroke LCM 2:42.15 A+5.66s to AA·+1.76s to Sectionals 2026-07-12 2026 NBAC Mid Summer Classicvenue
50 Butterfly LCM 28.44 AA+1.05s to AAA·+0.65s to Sectionals 2025-05-16 2025 NBAC Spring LC Invitational Meetvenue
100 Butterfly LCM 1:02.74 A+1.15s to AA·+2.25s to Sectionals 2025-04-27 2025 NAAC Carol Chidester Invitevenue
200 Butterfly LCM 2:24.76 BB+0.87s to A·+7.37s to Sectionals 2025-01-01 2025 nbac mid summer classic final results pdf
200 Individual Medley LCM 2:19.22 AA+3.53s to AAA·+1.53s to Sectionals 2024-01-01 2024 nbac mid summer classic final results pdf
400 Individual Medley LCM 5:14.19 A+9.40s to AA·+20.30s to Sectionals 2024-05-18 2024 NBAC Spring LC Invitational Meetvenue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.

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.

Fastest relay legs

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 22.57 flat 200 Free Relay 2026-01-16 Winterfest 2026
100 Freestyle SCY 48.08 flying 400 Free Relay (leg 3) 2026-01-18 Winterfest 2026
200 Freestyle SCY 1:48.55 flying 800 Free Relay (leg 2) 2025-12-11 32nd Annual YOTA/Arena Capital Classic
50 Backstroke SCY 26.00 flat 200 Medley Relay 2025-12-11 32nd Annual YOTA/Arena Capital Classic
100 Backstroke SCY 55.24 flat 400 Medley Relay 2025-12-14 32nd Annual YOTA/Arena Capital Classic
50 Freestyle LCM 26.42 flat 200 Free Relay 2024-07-05 2024 NBAC Mid Summer Classic
50 Freestyle LCM 26.31 flying 200 Free Relay (leg 2) 2025-05-17 2025 NBAC Spring LC Invitational Meet
100 Freestyle LCM 58.41 flying 400 Medley Relay (leg 4) 2023-07-08 2023 NBAC Mid-Summer Classic
100 Freestyle LCM 1:00.11 flying 400 Free Relay (leg 4) 2024-07-06 2024 NBAC Mid Summer Classic
50 Backstroke LCM 29.86 flat 200 Medley Relay 2025-05-18 2025 NBAC Spring LC Invitational Meet
100 Backstroke LCM 1:03.70 flat 400 Medley Relay 2026-07-11 2026 NBAC Mid Summer Classic

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

4328 points (6/6 events)

EventTime Points
500 FR SCY 5:01.78 735
200 BK SCY 1:57.04 783
200 BR SCY 2:22.40 624
200 FL SCY 2:02.96 711
200 IM SCY 2:02.84 729
400 IM SCY 4:22.38 746

IMR 17-18 · SCY

3588 points (5/5 events)

EventTime Points
200 FR SCY 1:48.92 778
100 BK SCY 55.15 696
100 BR SCY 1:03.90 672
100 FL SCY 54.94 713
200 IM SCY 2:02.84 729

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

PR splits

100 Freestyle SCY 49.05

23.44
25.61

Front half 23.44s · back half 25.61s

200 Freestyle SCY 1:48.92

25.28
27.15
27.70
28.79

Front half 52.43s · back half 56.49s

500 Freestyle SCY 5:01.78 split/total mismatch

26.01
28.68
29.17
30.01
30.48
31.17
31.52
31.51
31.83
31.40

1650 Freestyle SCY 17:11.58 split/total mismatch

28.43
30.46
31.08
30.78
30.67
31.07
30.94
31.34
31.22
31.33
31.79
32.04
31.87
31.51
31.48
31.84
31.13
31.24
31.20
31.69
31.73
31.21
31.86
32.01
31.91
32.05
32.01
31.88
31.70
31.21
31.23
30.74
28.93

100 Backstroke SCY 55.15

26.81
28.34

Front half 26.81s · back half 28.34s

200 Backstroke SCY 1:57.04

27.31
29.53
30.29
29.91

Front half 56.84s · back half 60.20s

100 Breaststroke SCY 1:03.90 split/total mismatch

30.21
3.48

Front half 30.21s · back half 33.69s

200 Breaststroke SCY 2:22.40 split/total mismatch

31.17
4.57
1.38
1.25

Front half 35.74s · back half 106.66s

100 Butterfly SCY 54.94 split/total mismatch

28.42
32.05
25.29
29.65

200 Butterfly SCY 2:02.96

27.16
30.58
32.34
32.88

Front half 57.74s · back half 65.22s

200 Individual Medley SCY 2:02.84 split/total mismatch

25.66
30.81
38.06
28.31

400 Individual Medley SCY 4:22.38

27.77
31.16
33.26
33.10
37.84
38.45
31.56
29.24

Front half 125.29s · back half 137.09s

100 Freestyle LCM 58.60 split/total mismatch

27.91
2.78

Front half 27.91s · back half 30.69s

200 Freestyle LCM 2:09.47 split/total mismatch

30.68
33.48
32.32
32.99

400 Freestyle LCM 4:39.05

31.83
35.49
36.58
35.47
35.41
34.83
34.69
34.75

Front half 139.37s · back half 139.68s

800 Freestyle LCM 9:37.48

67.11
72.46
72.70
73.00
73.64
73.55
73.09
71.93

Front half 285.27s · back half 292.21s

1500 Freestyle LCM 19:18.83

33.16
35.66
37.62
37.22
38.35
38.66
39.06
38.88
39.27
38.76
39.24
38.91
39.18
39.23
39.56
39.48
39.23
39.12
39.56
39.16
39.43
38.54
39.11
39.58
39.67
38.67
39.27
38.82
39.01
37.42

Front half 572.76s · back half 586.07s

100 Backstroke LCM 1:02.83 RT 0.58s

29.96
32.87

Front half 29.96s · back half 32.87s

200 Backstroke LCM 2:15.97

31.32
33.66
35.51
35.48

Front half 64.98s · back half 70.99s

100 Breaststroke LCM 1:18.26

37.12
41.14

Front half 37.12s · back half 41.14s

200 Breaststroke LCM 2:42.15

37.90
40.60
41.66
41.99

Front half 78.50s · back half 83.65s

100 Butterfly LCM 1:02.74

28.52
34.22

Front half 28.52s · back half 34.22s

200 Butterfly LCM 2:24.76

30.25
34.56
38.65
41.30

Front half 64.81s · back half 79.95s

200 Individual Medley LCM 2:19.22

29.06
34.25
42.85
33.06

Front half 63.31s · back half 75.91s

400 Individual Medley LCM 5:14.19

32.14
37.62
40.24
38.89
46.45
47.19
37.27
34.39

Front half 148.89s · back half 165.30s

Reaction time

fastest 0.58s average 0.630s slowest 0.68s 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 22.67 6 swims
100 Freestyle SCY 49.05 6 swims
200 Freestyle SCY 1:48.92 7 swims
500 Freestyle SCY 5:01.78 2 swims
1650 Freestyle SCY 17:11.58 1 swim
50 Backstroke SCY 26.19 2 swims
100 Backstroke SCY 55.15 6 swims
200 Backstroke SCY 1:57.04 8 swims
100 Breaststroke SCY 1:03.90 2 swims
200 Breaststroke SCY 2:22.40 4 swims
100 Butterfly SCY 54.94 9 swims
200 Butterfly SCY 2:02.96 5 swims
200 Individual Medley SCY 2:02.84 5 swims
400 Individual Medley SCY 4:22.38 3 swims
50 Freestyle LCM 26.60 8 swims
100 Freestyle LCM 58.60 14 swims
200 Freestyle LCM 2:09.47 13 swims
400 Freestyle LCM 4:39.05 3 swims
800 Freestyle LCM 9:37.48 1 swim
1500 Freestyle LCM 19:18.83 1 swim
50 Backstroke LCM 29.66 4 swims
100 Backstroke LCM 1:02.83 13 swims
200 Backstroke LCM 2:15.97 19 swims
100 Breaststroke LCM 1:18.26 5 swims
200 Breaststroke LCM 2:42.15 9 swims
50 Butterfly LCM 28.44 3 swims
100 Butterfly LCM 1:02.74 14 swims
200 Butterfly LCM 2:24.76 11 swims
200 Individual Medley LCM 2:19.22 20 swims
400 Individual Medley LCM 5:14.19 3 swims