Zach Marshall

Mage 17FLGUMTSTNTRO

148 plausible swims · 27 meets · 2024-01-12 → 2026-06-14

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	23.40	A+0.31s to AA·+0.51s to Sectionals	2025-09-27	2025 ST NTRO Autumn Classic venue
100 Freestyle	SCY	50.78	A+0.39s to AA·+1.29s to Sectionals	2025-09-28	2025 ST NTRO Autumn Classic venue
200 Freestyle	SCY	1:49.58	AA+3.19s to AAA·+1.09s to Sectionals	2025-09-27	2025 ST NTRO Autumn Classic venue
500 Freestyle	SCY	4:54.91	AA+6.32s to AAA·+1.62s to Sectionals	2025-09-28	2025 ST NTRO Autumn Classic venue
1000 Freestyle	SCY	10:29.52	AA+25.03s to AAA·+17.33s to Sectionals	2024-11-02	2024 ST NTRO Turkey Trot Meet slow pool
1650 Freestyle	SCY	17:25.07	AA+35.28s to AAA·+11.08s to Sectionals	2024-11-02	2024 ST NTRO Turkey Trot Meet slow pool
100 Backstroke	SCY	59.31	BB+2.02s to A·+2.82s to Sectionals	2025-09-27	2025 ST NTRO Autumn Classic venue
200 Backstroke	SCY	2:07.16	BB+1.97s to A·+1.77s to Sectionals	2025-09-28	2025 ST NTRO Autumn Classic venue
50 Breaststroke	SCY	27.77	AAA+0.78s to AAAA·Sectionals ✓+1.48s to Futures	2025-09-07	2025 ST NTRO Stephen J Wolleben Memorial Meet venue
100 Breaststroke	SCY	56.70	AAA+0.01s to AAAA·Futures ✓+1.71s to US Open	2025-12-12	2025 West Speedo Winter Juniors venue
200 Breaststroke	SCY	2:01.77	AAAA·Futures ✓+1.38s to US Open	2025-12-13	2025 West Speedo Winter Juniors venue
100 Butterfly	SCY	55.87	A+1.58s to AA·+2.28s to Sectionals	2025-09-07	2025 ST NTRO Stephen J Wolleben Memorial Meet venue
200 Individual Medley	SCY	1:53.87	AAA+1.68s to AAAA·Futures ✓+5.38s to US Open	2025-12-11	2025 West Speedo Winter Juniors venue
400 Individual Medley	SCY	4:05.62	AAA+4.13s to AAAA·Futures ✓+12.93s to US Open	2025-10-17	2025 ST TXLA 11&Over Fall Kick Off Invite venue
50 Freestyle	LCM	27.02	A+0.33s to AA·+0.73s to Sectionals	2026-04-25	2026 ST TXLA 11&O Long Course Kick Off venue
100 Freestyle	LCM	56.84	AA+1.25s to AAA·+0.15s to Sectionals	2026-05-16	2026 ST TXLA 11&O End of School Splash venue
200 Freestyle	LCM	2:07.29	AA+5.10s to AAA·+3.30s to Sectionals	2025-04-12	2025 ST TXLA 11& Over Long Course Kick Off venue
400 Freestyle	LCM	4:33.37	A+0.98s to AA·+10.28s to Sectionals	2024-07-13	2024 ST Long Course STAGS Championship venue
800 Freestyle	LCM	9:18.96	AA+17.47s to AAA·+9.97s to Sectionals	2025-04-11	2025 ST TXLA 11& Over Long Course Kick Off venue
1500 Freestyle	LCM	18:31.57	A+25.18s to AA·+51.48s to Sectionals	2025-06-20	2025 FAST Independence Invitational venue
100 Backstroke	LCM	1:10.16	BB+2.67s to A·+3.97s to Sectionals	2025-04-26	2025 ST NTRO Splashing into Long Course venue
200 Backstroke	LCM	2:24.65	A+3.66s to AA·+0.36s to Sectionals	2026-05-16	2026 ST TXLA 11&O End of School Splash venue
50 Breaststroke	LCM	30.13	AAAA·Futures ✓+0.54s to US Open	2026-06-13	2026 ST NIST George Block Invitational fast pool
100 Breaststroke	LCM	1:04.86	AAAA·US Open ✓+1.57s to Nationals	2026-04-25	2026 ST TXLA 11&O Long Course Kick Off venue
200 Breaststroke	LCM	2:17.89	AAAA·Nationals ✓	2026-06-12	2026 ST NIST George Block Invitational fast pool
100 Butterfly	LCM	1:02.58	A+0.19s to AA·+0.99s to Sectionals	2025-06-21	2025 FAST Independence Invitational venue
200 Butterfly	LCM	2:18.05	AA+4.86s to AAA·Sectionals ✓+7.86s to Futures	2026-05-17	2026 ST TXLA 11&O End of School Splash venue
200 Individual Medley	LCM	2:10.95	AAA+0.96s to AAAA·Futures ✓+2.96s to US Open	2026-06-14	2026 ST NIST George Block Invitational fast pool
400 Individual Medley	LCM	4:40.33	AAA+1.24s to AAAA·Futures ✓+7.24s to US Open	2026-06-11	2026 ST NIST George Block Invitational fast pool

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

Leg	Course	Time	Start	Relay	Date	Meet
100 Breaststroke	LCM	1:13.55	flying	400 Medley Relay (leg 2)	2024-07-12	2024 ST Long Course STAGS Championship

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 · LCM

5135 points (6/6 events)

Event	Time	Points
400 FR LCM	4:33.37	718
200 BK LCM	2:24.65	675
200 BR LCM	2:17.89	1089
200 FL LCM	2:18.05	747
200 IM LCM	2:10.95	955
400 IM LCM	4:40.33	951

IMR 17-18 · LCM

3982 points (5/5 events)

Event	Time	Points
200 FR LCM	2:07.29	731
100 BK LCM	1:10.16	570
100 BR LCM	1:04.86	1010
100 FL LCM	1:02.58	716
200 IM LCM	2:10.95	955

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

PR splits

100 Freestyle SCY 50.78

24.58

26.20

Front half 24.58s · back half 26.20s

200 Freestyle SCY 1:49.58

25.40

28.19

28.25

27.74

Front half 53.59s · back half 55.99s

500 Freestyle SCY 4:54.91

25.77

28.73

29.73

30.31

30.50

30.02

30.05

30.32

30.37

29.11

Front half 145.04s · back half 149.87s

1650 Freestyle SCY 17:25.07

28.29

30.89

31.43

31.72

32.00

31.26

31.06

31.54

31.45

31.80

31.61

31.64

31.54

31.95

32.29

31.50

31.92

31.31

32.06

32.26

32.12

31.83

32.02

32.14

32.09

31.87

32.40

32.46

32.28

31.99

32.33

32.07

29.95

100 Backstroke SCY 59.31

28.67

30.64

Front half 28.67s · back half 30.64s

200 Backstroke SCY 2:07.16

29.58

32.50

33.10

31.98

Front half 62.08s · back half 65.08s

100 Breaststroke SCY 56.70

26.92

29.78

Front half 26.92s · back half 29.78s

200 Breaststroke SCY 2:01.77

28.08

30.63

31.78

31.28

Front half 58.71s · back half 63.06s

100 Butterfly SCY 55.87

26.10

29.77

Front half 26.10s · back half 29.77s

200 Individual Medley SCY 1:53.87

24.94

29.97

31.27

27.69

Front half 54.91s · back half 58.96s

400 Individual Medley SCY 4:05.62

26.21

31.19

31.88

32.72

32.09

33.67

29.48

28.38

Front half 122.00s · back half 123.62s

200 Freestyle LCM 2:07.29

61.63

65.66

Front half 61.63s · back half 65.66s

400 Freestyle LCM 4:33.37

63.73

69.16

71.05

69.43

Front half 132.89s · back half 140.48s

800 Freestyle LCM 9:18.96

31.25

35.13

35.36

35.82

36.60

35.41

36.19

33.87

35.90

35.25

36.04

33.79

34.72

34.47

33.34

Front half 281.58s · back half 277.38s

1500 Freestyle LCM 18:31.57

32.36

35.23

30.33

43.13

37.17

37.57

37.47

37.93

37.97

37.39

37.63

37.38

37.26

37.03

37.54

37.59

37.26

37.49

37.98

37.53

36.93

38.19

37.23

37.35

37.74

37.04

36.96

36.97

36.49

35.43

Front half 553.39s · back half 558.18s

100 Backstroke LCM 1:10.16

33.94

36.22

Front half 33.94s · back half 36.22s

200 Backstroke LCM 2:24.65

69.86

74.79

Front half 69.86s · back half 74.79s

200 Breaststroke LCM 2:17.89

30.89

34.84

35.61

36.55

Front half 65.73s · back half 72.16s

100 Butterfly LCM 1:02.58

29.80

32.78

Front half 29.80s · back half 32.78s

200 Butterfly LCM 2:18.05

64.65

73.40

Front half 64.65s · back half 73.40s

200 Individual Medley LCM 2:10.95

28.63

35.54

35.97

30.81

Front half 64.17s · back half 66.78s

400 Individual Medley LCM 4:40.33

28.61

33.80

37.37

38.38

37.61

39.20

32.61

32.75

Front half 138.16s · back half 142.17s

Reaction time

fastest 0.66s average 0.688s slowest 0.72s 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 23.40 6 swims

100 Freestyle SCY 50.78 7 swims

200 Freestyle SCY 1:49.58 5 swims

500 Freestyle SCY 4:54.91 6 swims

1000 Freestyle SCY 10:29.52 1 swim

1650 Freestyle SCY 17:25.07 2 swims

100 Backstroke SCY 59.31 1 swim

200 Backstroke SCY 2:07.16 1 swim

50 Breaststroke SCY 27.77 1 swim

100 Breaststroke SCY 56.70 7 swims

200 Breaststroke SCY 2:01.77 7 swims

100 Butterfly SCY 55.87 7 swims

200 Individual Medley SCY 1:53.87 5 swims

400 Individual Medley SCY 4:05.62 7 swims

50 Freestyle LCM 27.02 4 swims

100 Freestyle LCM 56.84 5 swims

200 Freestyle LCM 2:07.29 5 swims

400 Freestyle LCM 4:33.37 4 swims

800 Freestyle LCM 9:18.96 2 swims

1500 Freestyle LCM 18:31.57 2 swims

100 Backstroke LCM 1:10.16 3 swims

200 Backstroke LCM 2:24.65 1 swim

50 Breaststroke LCM 30.13 5 swims

100 Breaststroke LCM 1:04.86 15 swims

200 Breaststroke LCM 2:17.89 15 swims

100 Butterfly LCM 1:02.58 6 swims

200 Butterfly LCM 2:18.05 1 swim

200 Individual Medley LCM 2:10.95 10 swims

400 Individual Medley LCM 4:40.33 6 swims