swimstats

Mark Du

Mage 12CABLACKLATRID

205 plausible swims · 29 meets · 2024-07-13 → 2026-10-25

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 25.88 AA+0.09s to AAA·+2.69s to Sectionals 2026-10-25 2026 CA OC Gold 3rd annual Fall Invitationalvenue
100 Freestyle SCY 55.99 AAA+2.30s to AAAA·+5.00s to Sectionals 2026-10-11 2026 CA Kevin Perry Classicvenue
200 Freestyle SCY 2:02.81 AA+0.22s to AAA·+11.02s to Sectionals 2026-10-25 2026 CA OC Gold 3rd annual Fall Invitationalvenue
500 Freestyle SCY 6:02.47 BB+2.48s to A·+59.78s to Sectionals 2026-01-17 2026 CA Trident Swim Club Winter Invite - copvenue
50 Backstroke SCY 28.65 AAA+0.46s to AAAA·+4.96s to Futures 2026-10-09 2026 CA Kevin Perry Classicvenue
100 Backstroke SCY 1:01.73 AAA+2.24s to AAAA·+6.24s to Sectionals 2026-09-13 2026 DARE Launch & Lunge Season Openerfast pool
200 Backstroke SCY 2:20.85 AA+4.96s to AAA·+19.56s to Sectionals 2026-09-12 2026 DARE Launch & Lunge Season Openerfast pool
50 Breaststroke SCY 31.10 AAAA·+4.81s to Futures 2026-10-09 2026 CA Kevin Perry Classicvenue
100 Breaststroke SCY 1:08.06 AAA+0.27s to AAAA·+4.87s to Sectionals 2026-10-25 2026 CA OC Gold 3rd annual Fall Invitationalvenue
200 Breaststroke SCY 2:33.63 AAA+6.24s to AAAA·+16.34s to Sectionals 2026-09-13 2026 DARE Launch & Lunge Season Openerfast pool
50 Butterfly SCY 26.70 AAA+0.01s to AAAA·+3.81s to Futures 2026-10-09 2026 CA Kevin Perry Classicvenue
100 Butterfly SCY 59.86 AAA+0.77s to AAAA·+4.67s to Sectionals 2026-10-11 2026 CA Kevin Perry Classicvenue
100 Individual Medley SCY 1:00.69 AAAA 2026-09-12 2026 DARE Launch & Lunge Season Openerfast pool
200 Individual Medley SCY 2:15.55 AAA+3.46s to AAAA·+11.56s to Sectionals 2026-10-11 2026 CA Kevin Perry Classicvenue
400 Individual Medley SCY 5:00.06 AA+3.57s to AAA·+35.37s to Sectionals 2026-10-24 2026 CA OC Gold 3rd annual Fall Invitationalvenue
50 Freestyle LCM 28.61 AAA+0.52s to AAAA·+1.62s to Sectionals 2026-06-14 ARMADA-2026 SCS June AG Invitevenue
100 Freestyle LCM 1:03.47 AAA+1.88s to AAAA·+4.48s to Sectionals 2026-07-12 2026 CA Metro Championships-LKWD LCvenue
200 Freestyle LCM 2:26.62 AA+5.83s to AAA·+17.93s to Sectionals 2026-07-12 2026 CA Metro Championships-LKWD LCvenue
50 Backstroke LCM 33.30 AAA+0.61s to AAAA·+5.41s to Futures 2026-07-11 2026 CA Metro Championships-LKWD LCvenue
100 Backstroke LCM 1:12.25 AAA+1.86s to AAAA·+7.06s to Sectionals 2026-06-14 ARMADA-2026 SCS June AG Invitevenue
50 Breaststroke LCM 35.39 AAAA·+4.50s to Futures 2026-07-24 2026 CA SCS Summer A/G Champsvenue
100 Breaststroke LCM 1:19.20 AAA+0.21s to AAAA·+5.50s to Sectionals 2026-07-26 2026 CA SCS Summer A/G Champsvenue
50 Butterfly LCM 30.01 AAAA·+3.72s to Futures 2026-07-12 2026 CA Metro Championships-LKWD LCvenue
100 Butterfly LCM 1:08.13 AAA+0.34s to AAAA·+5.04s to Sectionals 2026-07-23 2026 CA SCS Summer A/G Champsvenue
200 Individual Medley LCM 2:36.55 AAA+5.46s to AAAA·+11.86s to Sectionals 2026-07-25 2026 CA SCS Summer A/G Champsvenue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

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 26.00 flat 200 Free Relay 2026-03-15 2026 SCS Spring Age Group Champs @ RMDA - cop
50 Freestyle SCY 25.76 flying 200 Free Relay (leg 4) 2026-01-25 2026 SCS Swim Festival
50 Butterfly SCY 27.46 flying 200 Medley Relay (leg 3) 2026-03-15 2026 SCS Spring Age Group Champs @ RMDA - cop
50 Freestyle LCM 31.21 flying 200 Free Relay (leg 2) 2025-06-14 2025 CA SCS RAA June Age Group Championships
100 Freestyle LCM 3:20.80 flying 400 Free Relay (leg 3) 2025-07-27 2025 CA SCS/RAA Summer A/G Champs
100 Breaststroke LCM 1:29.00 flying 400 Medley Relay (leg 2) 2025-07-26 2025 CA SCS/RAA Summer A/G Champs
50 Butterfly LCM 32.86 flying 200 Medley Relay (leg 3) 2025-07-25 2025 CA SCS/RAA Summer A/G Champs

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 11-12 · SCY

4425 points (5/5 events)

EventTime Points
500 FR SCY 6:02.47 656
100 BK SCY 1:01.73 895
100 BR SCY 1:08.06 988
100 FL SCY 59.86 961
200 IM SCY 2:15.55 925

IMR 11-12 · SCY

4871 points (5/5 events)

EventTime Points
200 FR SCY 2:02.81 864
50 BK SCY 28.65 952
50 BR SCY 31.10 1038
50 FL SCY 26.70 998
100 IM SCY 1:00.69 1019

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

PR splits

100 Freestyle SCY 55.99

27.10
28.89

Front half 27.10s · back half 28.89s

200 Freestyle SCY 2:02.81

28.76
31.48
32.21
30.36

Front half 60.24s · back half 62.57s

500 Freestyle SCY 6:02.47

31.86
35.75
37.10
37.50
37.82
37.35
37.28
37.17
37.22
33.42

Front half 180.03s · back half 182.44s

100 Backstroke SCY 1:01.73

30.29
31.44

Front half 30.29s · back half 31.44s

200 Backstroke SCY 2:20.85

32.81
35.99
37.34
34.71

Front half 68.80s · back half 72.05s

100 Breaststroke SCY 1:08.06

32.23
35.83

Front half 32.23s · back half 35.83s

200 Breaststroke SCY 2:33.63

34.72
39.53
40.35
39.03

Front half 74.25s · back half 79.38s

100 Butterfly SCY 59.86

28.45
31.41

Front half 28.45s · back half 31.41s

100 Individual Medley SCY 1:00.69

27.74
32.95

Front half 27.74s · back half 32.95s

200 Individual Medley SCY 2:15.55

29.23
34.98
38.80
32.54

Front half 64.21s · back half 71.34s

400 Individual Medley SCY 5:00.06

31.99
38.09
38.27
38.13
41.30
42.87
35.77
33.64

Front half 146.48s · back half 153.58s

100 Freestyle LCM 1:03.47

30.67
32.80

Front half 30.67s · back half 32.80s

200 Freestyle LCM 2:26.62

32.53
36.41
39.51
38.17

Front half 68.94s · back half 77.68s

100 Backstroke LCM 1:12.25

35.16
37.09

Front half 35.16s · back half 37.09s

100 Breaststroke LCM 1:19.20

38.62
40.58

Front half 38.62s · back half 40.58s

100 Butterfly LCM 1:08.13

32.40
35.73

Front half 32.40s · back half 35.73s

200 Individual Medley LCM 2:36.55

32.62
41.31
47.09
35.53

Front half 73.93s · back half 82.62s

Reaction time

fastest 0.64s average 0.747s slowest 0.87s 7 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 25.88 10 swims
100 Freestyle SCY 55.99 12 swims
200 Freestyle SCY 2:02.81 4 swims
500 Freestyle SCY 6:02.47 1 swim
50 Backstroke SCY 28.65 7 swims
100 Backstroke SCY 1:01.73 13 swims
200 Backstroke SCY 2:20.85 3 swims
50 Breaststroke SCY 31.10 7 swims
100 Breaststroke SCY 1:08.06 13 swims
200 Breaststroke SCY 2:33.63 2 swims
50 Butterfly SCY 26.70 15 swims
100 Butterfly SCY 59.86 11 swims
100 Individual Medley SCY 1:00.69 16 swims
200 Individual Medley SCY 2:15.55 12 swims
400 Individual Medley SCY 5:00.06 2 swims
50 Freestyle LCM 28.61 5 swims
100 Freestyle LCM 1:03.47 8 swims
200 Freestyle LCM 2:26.62 1 swim
50 Backstroke LCM 33.30 5 swims
100 Backstroke LCM 1:12.25 11 swims
50 Breaststroke LCM 35.39 9 swims
100 Breaststroke LCM 1:19.20 9 swims
50 Butterfly LCM 30.01 13 swims
100 Butterfly LCM 1:08.13 9 swims
200 Individual Medley LCM 2:36.55 7 swims