swimstats

Zach Marshall

Mage 18FLGUMTSTNTRO

164 plausible swims · 29 meets · 2024-01-12 → 2026-08-07

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 23.40 A+0.71s to AA·+1.11s to Sectionals 2025-09-27 2025 ST NTRO Autumn Classicvenue
100 Freestyle SCY 50.78 A+0.89s to AA·+2.49s to Sectionals 2025-09-28 2025 ST NTRO Autumn Classicvenue
200 Freestyle SCY 1:49.58 AA+4.19s to AAA·+3.79s to Sectionals 2025-09-27 2025 ST NTRO Autumn Classicvenue
500 Freestyle SCY 4:54.91 AA+8.22s to AAA·+8.82s to Sectionals 2025-09-28 2025 ST NTRO Autumn Classicvenue
1000 Freestyle SCY 10:29.52 AA+27.23s to AAA·+32.33s to Sectionals 2024-11-02 2024 ST NTRO Turkey Trot Meetslow pool
1650 Freestyle SCY 17:25.07 AA+41.28s to AAA·+36.38s to Sectionals 2024-11-02 2024 ST NTRO Turkey Trot Meetslow pool
100 Backstroke SCY 59.31 BB+3.12s to A·+4.22s to Sectionals 2025-09-27 2025 ST NTRO Autumn Classicvenue
200 Backstroke SCY 2:07.16 BB+3.37s to A·+4.87s to Sectionals 2025-09-28 2025 ST NTRO Autumn Classicvenue
50 Breaststroke SCY 27.77 AAA+1.08s to AAAA·Sectionals ✓+1.48s to Futures 2025-09-07 2025 ST NTRO Stephen J Wolleben Memorial Meetvenue
100 Breaststroke SCY 56.70 AAA+0.51s to AAAA·Futures ✓+1.21s to Winter JNs 2025-12-12 2025 West Speedo Winter Juniorsvenue
200 Breaststroke SCY 2:01.77 AAAA·Futures ✓+0.18s to Winter JNs 2025-12-13 2025 West Speedo Winter Juniorsvenue
100 Butterfly SCY 55.87 A+1.98s to AA·+3.18s to Sectionals 2025-09-07 2025 ST NTRO Stephen J Wolleben Memorial Meetvenue
200 Individual Medley SCY 1:53.87 AAA+2.98s to AAAA·Futures ✓+4.28s to Winter JNs 2025-12-11 2025 West Speedo Winter Juniorsvenue
400 Individual Medley SCY 4:05.62 AAA+6.23s to AAAA·Futures ✓+9.13s to Winter JNs 2025-10-17 2025 ST TXLA 11&Over Fall Kick Off Invitevenue
50 Freestyle LCM 27.02 A+0.73s to AA·+1.43s to Sectionals 2026-04-25 2026 ST TXLA 11&O Long Course Kick Offvenue
100 Freestyle LCM 56.84 AA+1.65s to AAA·+1.55s to Sectionals 2026-05-16 2026 ST TXLA 11&O End of School Splashvenue
200 Freestyle LCM 2:07.29 A+1.10s to AA·+6.40s to Sectionals 2025-04-12 2025 ST TXLA 11& Over Long Course Kick Offvenue
400 Freestyle LCM 4:33.37 A+4.38s to AA·+14.28s to Sectionals 2024-07-13 2024 ST Long Course STAGS Championshipvenue
800 Freestyle LCM 9:18.96 AA+20.17s to AAA·+23.37s to Sectionals 2025-04-11 2025 ST TXLA 11& Over Long Course Kick Offvenue
1500 Freestyle LCM 18:31.57 A+33.78s to AA·+77.38s to Sectionals 2025-06-20 2025 FAST Independence Invitationalvenue
100 Backstroke LCM 1:10.16 BB+3.17s to A·+5.67s to Sectionals 2025-04-26 2025 ST NTRO Splashing into Long Coursevenue
200 Backstroke LCM 2:24.65 A+4.86s to AA·+3.96s to Sectionals 2026-05-16 2026 ST TXLA 11&O End of School Splashvenue
50 Breaststroke LCM 29.31 AAAA·Jr Nationals ✓+0.12s to Nationals 2026-08-04 2026 Speedo Junior National Championshipsvenue
100 Breaststroke LCM 1:03.15 AAAA·Nationals ✓ 2026-08-03 2026 Speedo Junior National Championshipsvenue
200 Breaststroke LCM 2:15.85 AAAA·Nationals ✓ 2026-08-06 2026 Speedo Junior National Championshipsvenue
100 Butterfly LCM 1:02.58 A+0.99s to AA·+2.09s to Sectionals 2025-06-21 2025 FAST Independence Invitationalvenue
200 Butterfly LCM 2:14.21 AA+2.32s to AAA·Sectionals ✓+4.02s to Futures 2026-07-15 2026 ST TXLA SZ LC Sectional Champsvenue
200 Individual Medley LCM 2:10.04 AAA+0.45s to AAAA·Futures ✓+0.75s to Winter JNs 2026-08-07 2026 Speedo Junior National Championshipsvenue
400 Individual Medley LCM 4:38.92 AAA+0.63s to AAAA·Futures ✓+3.03s to Winter JNs 2026-08-04 2026 Speedo Junior National Championshipsvenue

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.

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
100 Freestyle SCY 55.44 flat 400 Free Relay 2024-02-03 2024 ST STX Championship - Belton
100 Breaststroke SCY 1:05.85 flying 400 Medley Relay (leg 2) 2024-02-04 2024 ST STX Championship - Belton
50 Breaststroke LCM 28.95 flying 200 Medley Relay (leg 2) 2026-08-05 2026 Speedo Junior National Championships
100 Breaststroke LCM 1:03.19 flying 400 Medley Relay (leg 2) 2026-08-07 2026 Speedo Junior National 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 · LCM

5246 points (6/6 events)

EventTime Points
400 FR LCM 4:33.37 718
200 BK LCM 2:24.65 675
200 BR LCM 2:15.85 1100
200 FL LCM 2:14.21 813
200 IM LCM 2:10.04 975
400 IM LCM 4:38.92 965

IMR 17-18 · LCM

4087 points (5/5 events)

EventTime Points
200 FR LCM 2:07.29 731
100 BK LCM 1:10.16 570
100 BR LCM 1:03.15 1095
100 FL LCM 1:02.58 716
200 IM LCM 2:10.04 975

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
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

100 Breaststroke LCM 1:03.15 RT 0.65s

29.50
33.65

Front half 29.50s · back half 33.65s

200 Breaststroke LCM 2:15.85 RT 0.63s

30.29
34.36
35.24
35.96

Front half 64.65s · back half 71.20s

100 Butterfly LCM 1:02.58

29.80
32.78

Front half 29.80s · back half 32.78s

200 Butterfly LCM 2:14.21

29.51
34.69
34.30
35.71

Front half 64.20s · back half 70.01s

200 Individual Medley LCM 2:10.04 RT 0.65s

28.23
35.01
35.47
31.33

Front half 63.24s · back half 66.80s

400 Individual Medley LCM 4:38.92

28.74
33.70
38.30
37.87
37.00
38.66
32.58
32.07

Front half 138.61s · back half 140.31s

Reaction time

fastest 0.63s average 0.667s slowest 0.72s 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 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 29.31 8 swims
100 Breaststroke LCM 1:03.15 19 swims
200 Breaststroke LCM 2:15.85 17 swims
100 Butterfly LCM 1:02.58 6 swims
200 Butterfly LCM 2:14.21 3 swims
200 Individual Medley LCM 2:10.04 11 swims
400 Individual Medley LCM 4:38.92 8 swims