Marco Du

Mage 15FLMRFAST

147 plausible swims · 21 meets · 2024-01-12 → 2026-06-28

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 25.83 BB+1.14s to A·+3.54s to Sectionals 2026-03-01 2026 Area 4 Spring Champsvenue
100 Freestyle SCY 56.34 BB+2.05s to A·+8.05s to Sectionals 2026-02-28 2026 Area 4 Spring Champsvenue
200 Freestyle SCY 2:07.64 BB+9.05s to A·+21.85s to Sectionals 2026-03-01 2026 Area 4 Spring Champsvenue
500 Freestyle SCY 6:30.51 +14.22s to B·+104.42s to Sectionals 2024-02-23 2024 Spring Area 4 Championshipsvenue
1000 Freestyle SCY 13:21.25 +17.56s to B·+204.06s to Sectionals 2024-02-02 2024 FAST February Invitevenue
1650 Freestyle SCY 22:19.41 +31.72s to B·+330.72s to Sectionals 2024-01-12 2024 FAST Polar Bear Plungevenue
50 Backstroke SCY 28.91 BB+0.92s to A·+3.22s to Sectionals 2026-01-10 2026 FAST Polar Plungevenue
100 Backstroke SCY 1:02.33 BB+2.74s to A·+7.24s to Sectionals 2025-12-06 2025 Speedo Gator Holiday Classicfast pool
200 Backstroke SCY 2:23.02 B+2.03s to BB·+20.73s to Sectionals 2026-02-28 2026 Area 4 Spring Champsvenue
50 Breaststroke SCY 35.50 B+0.71s to BB·+6.01s to Sectionals 2025-10-12 2025 FAST Pumpkin Plungevenue
100 Breaststroke SCY 1:17.05 B+4.06s to BB·+14.36s to Sectionals 2026-01-10 2026 FAST Polar Plungevenue
200 Breaststroke SCY 2:49.28 B+10.09s to BB·+29.99s to Sectionals 2025-03-01 2025 Area 4 Spring Champsvenue
50 Butterfly SCY 29.53 BB+1.74s to A·+5.24s to Sectionals 2025-10-11 2025 FAST Pumpkin Plungevenue
100 Butterfly SCY 1:06.76 B+2.97s to BB·+14.07s to Sectionals 2026-02-01 2026 FAST February Helping Hands Invitevenue
200 Butterfly SCY 2:55.50 +21.51s to B·+57.01s to Sectionals 2024-02-04 2024 FAST February Invitevenue
100 Individual Medley SCY 1:09.56 2025-01-11 2025 FAST Polar Bear Plungevenue
200 Individual Medley SCY 2:23.57 B+0.38s to BB·+24.18s to Sectionals 2026-01-31 2026 FAST February Helping Hands Invitevenue
400 Individual Medley SCY 5:44.10 +12.51s to B·+92.11s to Sectionals 2024-02-03 2024 FAST February Invitevenue
50 Freestyle LCM 29.48 BB+0.89s to A·+3.89s to Sectionals 2026-06-27 2026 FAST Independence Invitationalvenue
100 Freestyle LCM 1:05.56 BB+3.27s to A·+10.27s to Sectionals 2026-06-28 2026 FAST Independence Invitationalvenue
200 Freestyle LCM 2:27.57 BB+10.38s to A·+26.68s to Sectionals 2026-06-26 2026 FAST Independence Invitationalvenue
400 Freestyle LCM 5:49.71 +8.92s to B·+90.62s to Sectionals 2024-07-06 2023 SLAC Last Chance to Dance Invitationalvenue
800 Freestyle LCM 11:58.64 +14.05s to B·+183.05s to Sectionals 2024-07-07 2023 SLAC Last Chance to Dance Invitationalvenue
1500 Freestyle LCM 22:59.77 +20.88s to B·+345.58s to Sectionals 2024-05-17 2024 FAST May Invitevenue
50 Backstroke LCM 33.60 BB+0.41s to A·+3.41s to Sectionals 2026-06-25 2026 FAST Independence Invitationalvenue
100 Backstroke LCM 1:13.51 BB+3.92s to A·+9.02s to Sectionals 2026-06-26 2026 FAST Independence Invitationalvenue
200 Backstroke LCM 2:43.53 BB+12.44s to A·+22.84s to Sectionals 2026-06-28 2026 FAST Independence Invitationalvenue
50 Breaststroke LCM 39.95 B+0.36s to BB·+5.76s to Sectionals 2026-06-25 2026 FAST Independence Invitationalvenue
100 Breaststroke LCM 1:31.95 +0.56s to B·+19.56s to Sectionals 2024-06-30 2024 FAST Independence Invitationalvenue
200 Breaststroke LCM 3:23.23 +3.34s to B·+42.84s to Sectionals 2024-07-06 2023 SLAC Last Chance to Dance Invitationalvenue
50 Butterfly LCM 32.69 BB+1.40s to A·+4.90s to Sectionals 2026-05-17 2026 FAST May Invitefast pool
100 Butterfly LCM 1:14.00 B+1.11s to BB·+13.51s to Sectionals 2026-06-27 2026 FAST Independence Invitationalvenue
200 Butterfly LCM 3:30.06 +34.37s to B·+72.67s to Sectionals 2024-06-02 2024 Sunshine State Gamesvenue
200 Individual Medley LCM 2:50.65 B+4.66s to BB·+32.96s to Sectionals 2025-06-20 2025 FAST Independence Invitationalvenue
400 Individual Medley LCM 6:22.36 B+25.67s to BB·+88.47s to Sectionals 2024-05-19 2024 FAST May Invitevenue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.

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 25.53 flat 200 Free Relay 2026-02-28 2026 Area 4 Spring Champs
50 Freestyle SCY 27.42 flying 200 Medley Relay (leg 4) 2024-02-24 2024 Spring Area 4 Championships
50 Freestyle SCY 26.04 flying 200 Free Relay (leg 4) 2026-01-31 2026 FAST February Helping Hands Invite
50 Backstroke SCY 29.43 flat 200 Medley Relay 2026-03-01 2026 Area 4 Spring Champs
100 Backstroke SCY 1:05.68 flat 400 Medley Relay 2025-03-06 2025 Florida Swimming FLAGS NORTH
100 Freestyle LCM 1:11.33 flying 400 Free Relay (leg 4) 2024-06-01 2024 Sunshine State Games
100 Backstroke LCM 1:20.26 flat 400 Medley Relay 2024-06-28 2024 FAST Independence Invitational

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 15-16 · SCY

2322 points (6/6 events)

EventTime Points
500 FR SCY 6:30.51 354
200 BK SCY 2:23.02 463
200 BR SCY 2:49.28 405
200 FL SCY 2:55.50 264
200 IM SCY 2:23.57 490
400 IM SCY 5:44.10 346

IMR 15-16 · SCY

2386 points (5/5 events)

EventTime Points
200 FR SCY 2:07.64 510
100 BK SCY 1:02.33 537
100 BR SCY 1:17.05 419
100 FL SCY 1:06.76 430
200 IM SCY 2:23.57 490

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

PR splits

100 Freestyle SCY 56.34

26.94
29.40

Front half 26.94s · back half 29.40s

200 Freestyle SCY 2:07.64

28.12
31.56
34.12
33.84

Front half 59.68s · back half 67.96s

500 Freestyle SCY 6:30.51 RT 0.77s

33.40
38.51
40.05
40.26
40.59
39.94
41.14
40.30
40.24
36.08

Front half 192.81s · back half 197.70s

1000 Freestyle SCY 13:21.25 RT 0.83s

33.28
37.50
39.77
40.28
40.82
40.18
40.73
41.15
41.03
41.37
40.98
41.32
40.06
41.32
40.75
41.72
40.34
40.18
41.06
37.41

Front half 396.11s · back half 405.14s

1650 Freestyle SCY 22:19.41 RT 0.82s

34.14
39.01
40.59
39.65
40.94
40.67
40.69
41.30
40.62
41.00
40.70
40.76
40.95
41.36
41.62
41.92
41.95
41.13
41.11
41.46
41.09
41.65
41.37
40.52
41.87
41.29
41.59
42.05
40.28
41.19
39.48
40.69
34.77

100 Backstroke SCY 1:02.33

29.70
32.63

Front half 29.70s · back half 32.63s

200 Backstroke SCY 2:23.02

32.98
36.20
37.23
36.61

Front half 69.18s · back half 73.84s

100 Breaststroke SCY 1:17.05

36.74
40.31

Front half 36.74s · back half 40.31s

200 Breaststroke SCY 2:49.28 RT 0.87s

37.78
42.78
44.35
44.37

Front half 80.56s · back half 88.72s

100 Butterfly SCY 1:06.76

30.98
35.78

Front half 30.98s · back half 35.78s

200 Butterfly SCY 2:55.50 RT 0.80s

36.64
44.64
47.45
46.77

Front half 81.28s · back half 94.22s

100 Individual Medley SCY 1:09.56 RT 0.79s

32.74
36.82

Front half 32.74s · back half 36.82s

200 Individual Medley SCY 2:23.57 RT 0.82s

31.19
36.09
43.07
33.22

Front half 67.28s · back half 76.29s

400 Individual Medley SCY 5:44.10 RT 0.80s

39.20
46.21
42.87
41.74
47.90
46.93
40.66
38.59

Front half 170.02s · back half 174.08s

100 Freestyle LCM 1:05.56

30.69
34.87

Front half 30.69s · back half 34.87s

200 Freestyle LCM 2:27.57

31.94
36.53
39.44
39.66

Front half 68.47s · back half 79.10s

400 Freestyle LCM 5:49.71 RT 0.77s

37.82
41.35
44.46
45.40
46.19
46.15
46.82
41.52

Front half 169.03s · back half 180.68s

800 Freestyle LCM 11:58.64 RT 0.80s

39.83
41.89
43.79
44.13
45.81
46.30
46.30
46.25
46.75
45.61
46.16
46.00
46.90
45.01
45.40
42.51

Front half 354.30s · back half 364.34s

1500 Freestyle LCM 22:59.77 RT 0.77s

36.90
41.68
44.16
44.47
45.30
46.46
46.48
46.26
46.82
46.45
46.93
46.01
46.91
46.24
46.49
46.11
47.02
46.96
46.58
47.12
46.72
47.21
47.39
47.60
47.06
47.12
47.65
46.96
46.93
43.78

Front half 677.56s · back half 702.21s

100 Backstroke LCM 1:13.51

34.47
39.04

Front half 34.47s · back half 39.04s

200 Backstroke LCM 2:43.53

36.72
40.56
43.53
42.72

Front half 77.28s · back half 86.25s

200 Breaststroke LCM 3:23.23 RT 0.78s

47.63
50.88
53.89
50.83

Front half 98.51s · back half 104.72s

100 Butterfly LCM 1:14.00

34.52
39.48

Front half 34.52s · back half 39.48s

200 Butterfly LCM 3:30.06

96.85
113.21

Front half 96.85s · back half 113.21s

200 Individual Medley LCM 2:50.65

36.91
43.20
51.35
39.19

Front half 80.11s · back half 90.54s

400 Individual Medley LCM 6:22.36 RT 0.71s

43.34
49.57
47.90
46.12
52.70
50.84
47.51
44.38

Front half 186.93s · back half 195.43s

Reaction time

fastest 0.57s average 0.766s slowest 1.17s 66 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 25.83 7 swims
100 Freestyle SCY 56.34 4 swims
200 Freestyle SCY 2:07.64 5 swims
500 Freestyle SCY 6:30.51 2 swims
1000 Freestyle SCY 13:21.25 1 swim
1650 Freestyle SCY 22:19.41 1 swim
50 Backstroke SCY 28.91 8 swims
100 Backstroke SCY 1:02.33 9 swims
200 Backstroke SCY 2:23.02 4 swims
50 Breaststroke SCY 35.50 3 swims
100 Breaststroke SCY 1:17.05 5 swims
200 Breaststroke SCY 2:49.28 4 swims
50 Butterfly SCY 29.53 4 swims
100 Butterfly SCY 1:06.76 5 swims
200 Butterfly SCY 2:55.50 1 swim
100 Individual Medley SCY 1:09.56 1 swim
200 Individual Medley SCY 2:23.57 4 swims
400 Individual Medley SCY 5:44.10 1 swim
50 Freestyle LCM 29.48 6 swims
100 Freestyle LCM 1:05.56 7 swims
200 Freestyle LCM 2:27.57 6 swims
400 Freestyle LCM 5:49.71 2 swims
800 Freestyle LCM 11:58.64 2 swims
1500 Freestyle LCM 22:59.77 1 swim
50 Backstroke LCM 33.60 7 swims
100 Backstroke LCM 1:13.51 11 swims
200 Backstroke LCM 2:43.53 6 swims
50 Breaststroke LCM 39.95 5 swims
100 Breaststroke LCM 1:31.95 6 swims
200 Breaststroke LCM 3:23.23 2 swims
50 Butterfly LCM 32.69 5 swims
100 Butterfly LCM 1:14.00 5 swims
200 Butterfly LCM 3:30.06 1 swim
200 Individual Medley LCM 2:50.65 4 swims
400 Individual Medley LCM 6:22.36 1 swim