Liam Rosenbach

Mage 17FLMAMDNCYY

229 plausible swims · 28 meets · 2021-12-10 → 2026-05-30

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	22.67	AA+0.58s to AAA	2024-02-05	John deBarbadillo Invite
100 Freestyle	SCY	49.05	AA+0.76s to AAA	2026-01-16	Winterfest 2026
200 Freestyle	SCY	1:48.92	AA+2.53s to AAA	2026-01-16	Winterfest 2026
500 Freestyle	SCY	5:01.78	A+0.09s to AA	2024-02-05	John deBarbadillo Invite
1650 Freestyle	SCY	17:11.58	AA+21.79s to AAA	2024-10-07	Bill Schmidt Invite
50 Backstroke	SCY	26.19	A+0.50s to AA	2024-10-07	Bill Schmidt Invite
100 Backstroke	SCY	55.15	A+0.26s to AA	2026-01-16	Winterfest 2026
200 Backstroke	SCY	1:57.04	AA+2.25s to AAA	2025-12-14	32nd Annual YOTA/Arena Capital Classic venue
100 Breaststroke	SCY	1:03.90	A+1.81s to AA	2024-10-07	Bill Schmidt Invite
200 Breaststroke	SCY	2:22.40	BB+1.61s to A	2024-10-07	Bill Schmidt Invite
100 Butterfly	SCY	54.94	A+0.65s to AA	2025-11-07	2025 EMAC Fall Invitational 11 & Over A/BB/C
200 Butterfly	SCY	2:02.96	A+0.77s to AA	2025-12-13	32nd Annual YOTA/Arena Capital Classic venue
200 Individual Medley	SCY	2:02.84	AA+5.35s to AAA	2025-11-07	2025 EMAC Fall Invitational 11 & Over A/BB/C
400 Individual Medley	SCY	4:22.38	AA+9.39s to AAA	2026-02-01	YY John deBarbadillo Invite
50 Freestyle	LCM	26.60	AA+1.11s to AAA	2025-04-25	2025 NAAC Carol Chidester Invite
100 Freestyle	LCM	58.60	A+0.51s to AA	2024-06-10	Chargers Long Course Closed Invitational
200 Freestyle	LCM	2:09.47	A+1.78s to AA	2024-06-10	Chargers Long Course Closed Invitational
400 Freestyle	LCM	4:39.05	A+6.66s to AA	2024-05-17	2024 NBAC Spring LC Invitational Meet
800 Freestyle	LCM	9:37.48	A+11.29s to AA	2023-07-06	2023 NBAC Mid-Summer Classic venue
1500 Freestyle	LCM	19:18.83	BB+25.24s to A	2024-05-17	2024 NBAC Spring LC Invitational Meet venue
50 Backstroke	LCM	29.66	AA+0.27s to AAA	2024-08-01	2024 YMCA Long Course Championships fast pool
100 Backstroke	LCM	1:02.83	AA+0.94s to AAA	2024-08-02	2024 YMCA Long Course Championships fast pool
200 Backstroke	LCM	2:15.97	AA+1.18s to AAA	2024-07-31	2024 YMCA Long Course Championships fast pool
50 Breaststroke	LCM	1:11.78	+30.89s to B	2024-05-17	2024 NBAC Spring LC Invitational Meet
100 Breaststroke	LCM	1:19.12	BB+3.63s to A	2024-01-01	2024 nbac mid summer classic final results pdf
200 Breaststroke	LCM	2:48.81	BB+4.12s to A	2025-07-13	2025 NBAC Mid Summer Classic venue
50 Butterfly	LCM	28.44	AA+0.75s to AAA	2025-05-16	2025 NBAC Spring LC Invitational Meet venue
100 Butterfly	LCM	1:02.74	A+0.35s to AA	2025-04-27	2025 NAAC Carol Chidester Invite venue
200 Butterfly	LCM	2:24.76	A+5.47s to AA	2025-01-01	2025 nbac mid summer classic final results pdf
200 Individual Medley	LCM	2:19.22	AA+3.03s to AAA	2024-01-01	2024 nbac mid summer classic final results pdf
400 Individual Medley	LCM	5:14.19	A+8.50s to AA	2024-05-17	2024 NBAC Spring LC Invitational Meet

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

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

Leg	Course	Time	Start	Relay	Date	Meet
200 Freestyle	SCY	1:48.55	flying	800 Free Relay (leg 2)	2025-12-11	32nd Annual YOTA/Arena Capital 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)

Event	Time	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)

Event	Time	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 1:19.12

36.11

43.01

Front half 36.11s · back half 43.01s

200 Breaststroke LCM 2:48.81

38.59

42.85

43.52

43.85

Front half 81.44s · back half 87.37s

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.

Progression

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

50 Freestyle SCY 22.67 7 swims

100 Freestyle SCY 49.05 7 swims

200 Freestyle SCY 1:48.92 8 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 7 swims

200 Backstroke SCY 1:57.04 10 swims

100 Breaststroke SCY 1:03.90 2 swims

200 Breaststroke SCY 2:22.40 4 swims

100 Butterfly SCY 54.94 10 swims

200 Butterfly SCY 2:02.96 6 swims

200 Individual Medley SCY 2:02.84 5 swims

400 Individual Medley SCY 4:22.38 3 swims

50 Freestyle LCM 26.60 10 swims

100 Freestyle LCM 58.60 14 swims

200 Freestyle LCM 2:09.47 14 swims

400 Freestyle LCM 4:39.05 4 swims

800 Freestyle LCM 9:37.48 2 swims

1500 Freestyle LCM 19:18.83 2 swims

50 Backstroke LCM 29.66 5 swims

100 Backstroke LCM 1:02.83 13 swims

200 Backstroke LCM 2:15.97 19 swims

50 Breaststroke LCM 1:11.78 1 swim

100 Breaststroke LCM 1:19.12 5 swims

200 Breaststroke LCM 2:48.81 7 swims

50 Butterfly LCM 28.44 4 swims

100 Butterfly LCM 1:02.74 16 swims

200 Butterfly LCM 2:24.76 12 swims

200 Individual Medley LCM 2:19.22 22 swims

400 Individual Medley LCM 5:14.19 4 swims