Mark Du

Mage 12CABLACKLATRID

187 plausible swims · 26 meets · 2024-07-13 → 2026-07-26

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 26.50 AA+0.71s to AAA·+3.31s to Sectionals 2026-01-18 2026 CA Trident Swim Club Winter Invite - copvenue
100 Freestyle SCY 56.15 AAA+2.46s to AAAA·+5.16s to Sectionals 2025-12-14 2025 CA GWSC Winter Age Group Invitationalvenue
200 Freestyle SCY 2:09.52 A+1.33s to AA·+17.73s to Sectionals 2026-02-13 2026 Metro Champs @ La Mirada Armadavenue
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 30.75 AA+1.06s to AAA·+7.06s to Futures 2026-02-13 2026 Metro Champs @ La Mirada Armadavenue
100 Backstroke SCY 1:04.21 AA+1.42s to AAA·+8.72s to Sectionals 2025-12-06 2025 CA Trident Swim Club SC Dec Meetvenue
200 Backstroke SCY 2:22.92 A+0.93s to AA·+21.63s to Sectionals 2026-01-18 2026 CA Trident Swim Club Winter Invite - copvenue
50 Breaststroke SCY 33.12 AAA+1.63s to AAAA·+6.83s to Futures 2026-03-14 2026 SCS Spring Age Group Champs @ RMDA - copvenue
100 Breaststroke SCY 1:13.03 AA+1.64s to AAA·+9.84s to Sectionals 2026-01-25 2026 SCS Swim Festivalvenue
200 Breaststroke SCY 2:44.93 A+3.54s to AA·+27.64s to Sectionals 2025-12-06 2025 CA Trident Swim Club SC Dec Meetvenue
50 Butterfly SCY 27.01 AAA+0.32s to AAAA·+4.12s to Futures 2026-03-15 2026 SCS Spring Age Group Champs @ RMDA - copvenue
100 Butterfly SCY 1:01.30 AAA+2.21s to AAAA·+6.11s to Sectionals 2026-03-14 2026 SCS Spring Age Group Champs @ RMDA - copvenue
100 Individual Medley SCY 1:03.96 AAA+2.87s to AAAA 2026-02-15 2026 Metro Champs @ La Mirada Armadavenue
200 Individual Medley SCY 2:20.23 AA+1.44s to AAA·+16.24s to Sectionals 2026-01-19 2026 CA Trident Swim Club Winter Invite - copvenue
400 Individual Medley SCY 5:18.24 A+8.25s to AA·+53.55s to Sectionals 2025-12-07 2025 CA Trident Swim Club SC Dec Meetvenue
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.

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

3980 points (5/5 events)

EventTime Points
500 FR SCY 6:02.47 656
100 BK SCY 1:04.21 795
100 BR SCY 1:13.03 799
100 FL SCY 1:01.30 895
200 IM SCY 2:20.23 835

IMR 11-12 · LCM

4685 points (5/5 events)

EventTime Points
200 FR LCM 2:26.62 770
50 BK LCM 33.30 937
50 BR LCM 35.39 1060
50 FL LCM 30.01 1028
200 IM LCM 2:36.55 890

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

PR splits

100 Freestyle SCY 56.15

27.38
28.77

Front half 27.38s · back half 28.77s

200 Freestyle SCY 2:09.52

30.14
33.52
34.15
31.71

Front half 63.66s · back half 65.86s

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 1:04.21

31.78
32.43

Front half 31.78s · back half 32.43s

200 Backstroke SCY 2:22.92

34.10
36.04
37.25
35.53

Front half 70.14s · back half 72.78s

100 Breaststroke SCY 1:13.03

34.75
38.28

Front half 34.75s · back half 38.28s

200 Breaststroke SCY 2:44.93

37.08
40.92
44.33
42.60

Front half 78.00s · back half 86.93s

100 Butterfly SCY 1:01.30

29.53
31.77

Front half 29.53s · back half 31.77s

100 Individual Medley SCY 1:03.96

30.71
33.25

Front half 30.71s · back half 33.25s

200 Individual Medley SCY 2:20.23

31.05
34.43
41.68
33.07

Front half 65.48s · back half 74.75s

400 Individual Medley SCY 5:18.24

33.50
39.23
40.56
42.01
46.37
45.63
35.97
34.97

Front half 155.30s · back half 162.94s

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 26.50 9 swims
100 Freestyle SCY 56.15 11 swims
200 Freestyle SCY 2:09.52 3 swims
500 Freestyle SCY 6:02.47 1 swim
50 Backstroke SCY 30.75 6 swims
100 Backstroke SCY 1:04.21 12 swims
200 Backstroke SCY 2:22.92 2 swims
50 Breaststroke SCY 33.12 6 swims
100 Breaststroke SCY 1:13.03 11 swims
200 Breaststroke SCY 2:44.93 1 swim
50 Butterfly SCY 27.01 14 swims
100 Butterfly SCY 1:01.30 10 swims
100 Individual Medley SCY 1:03.96 14 swims
200 Individual Medley SCY 2:20.23 9 swims
400 Individual Medley SCY 5:18.24 1 swim
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