swimstats

Mark Zhou

Mage 12EZNEMTSCNEXTRM

409 plausible swims · 68 meets · 2023-02-03 → 2026-10-24

Personal records

EventCourseBest CutDateMeet
25 Freestyle SCY 23.29 2023-02-03 2023 NE CRIM Silver Championships
50 Freestyle SCY 28.46 BB+0.37s to A·+6.07s to Sectionals 2026-01-01 2026 ne nssc oct mit specialty meet results
100 Freestyle SCY 1:00.63 A+1.84s to AA·+12.14s to Sectionals 2026-09-27 2026 NE NSSC SCY Kick Off!venue
200 Freestyle SCY 2:12.39 A+4.20s to AA·+26.10s to Sectionals 2026-10-17 2026 NE NSSC October MITvenue
500 Freestyle SCY 5:53.37 A+8.38s to AA·+65.98s to Sectionals 2026-10-16 2026 NE NSSC October MITvenue
1000 Freestyle SCY 12:18.42 A+12.63s to AA·+138.93s to Sectionals 2026-01-31 2026 NE CS Silver Championshipsfast pool
1650 Freestyle SCY 20:32.13 A+25.74s to AA·+228.14s to Sectionals 2026-10-24 2026 NE CRA October Distance & Specialtyvenue
25 Backstroke SCY 27.76 2023-02-03 2023 NE CRIM Silver Championships
50 Backstroke SCY 38.24 B+2.65s to BB·+14.55s to Futures 2025-01-01 2025 spooktacular mit results
100 Backstroke SCY 1:26.78 +4.59s to B·+32.29s to Sectionals 2025-01-11 2025 CRA New Year Distance and Specialty Meetvenue
25 Breaststroke SCY 30.28 2023-02-03 2023 NE CRIM Silver Championships
50 Breaststroke SCY 35.91 A+0.92s to AA·+9.62s to Futures 2026-01-01 2026 ne nssc oct mit specialty meet results
100 Breaststroke SCY 1:18.06 A+3.17s to AA·+16.57s to Sectionals 2026-10-16 2026 NE NSSC October MITvenue
200 Breaststroke SCY 2:51.26 BB+2.87s to A·+36.27s to Sectionals 2025-10-17 2025 NE NSSC Beede Halloween Classic
25 Butterfly SCY 26.44 2026-02-19 2026 NE CRA SCY 11-14 Championship
50 Butterfly SCY 34.83 B+0.64s to BB·+11.94s to Futures 2025-12-12 2025 NE NSSC Dec 13-15 Holiday Celebration!
100 Butterfly SCY 1:18.96 B+2.87s to BB·+25.77s to Sectionals 2025-10-17 2025 NE NSSC Beede Halloween Classic
100 Individual Medley SCY 1:15.12 BB+5.13s to A 2026-09-26 2026 NE NSSC SCY Kick Off!venue
200 Individual Medley SCY 2:34.83 BB+2.54s to A·+35.44s to Sectionals 2026-10-16 2026 NE NSSC October MITvenue
400 Individual Medley SCY 5:40.01 BB+16.52s to A·+84.92s to Sectionals 2025-12-12 2025 NE NSSC Dec 13-15 Holiday Celebration!
50 Freestyle LCM 33.45 BB+1.36s to A·+7.96s to Sectionals 2026-05-09 2026 NE CRA MIT Team Specialty LC Meetvenue
100 Freestyle LCM 1:11.95 BB+1.56s to A·+16.46s to Sectionals 2026-01-01 NE CS 2026 Summer Solstice at Brown University
200 Freestyle LCM 2:35.41 BB+1.82s to A·+34.12s to Sectionals 2026-06-28 2026 NE NSSC June 26-28 MIT Invitationalvenue
400 Freestyle LCM 5:31.41 BB+4.72s to A·+73.82s to Sectionals 2026-01-01 NE CS 2026 Summer Solstice at Brown University
800 Freestyle LCM 10:51.84 AA+21.25s to AAA·+113.45s to Sectionals 2026-07-17 2026 NE MST/ESC LCM 12 & Under Championshipvenue
1500 Freestyle LCM 20:46.77 AA+27.48s to AAA·+207.78s to Sectionals 2026-07-19 2026 NE MST/ESC LCM 12 & Under Championshipvenue
50 Backstroke LCM 45.14 +0.55s to B·+17.25s to Futures 2025-07-27 2025 NE CRA July LC P/Fand Specialty Meetvenue
100 Backstroke LCM 1:35.18 B+5.59s to BB·+33.19s to Sectionals 2025-06-08 2025 NE CRIM JUNE TEAM SPECIATYvenue
50 Breaststroke LCM 41.49 A+1.50s to AA·+10.60s to Futures 2026-06-27 2026 NE NSSC June 26-28 MIT Invitationalvenue
100 Breaststroke LCM 1:30.21 A+3.02s to AA·+20.52s to Sectionals 2026-07-17 2026 NE MST/ESC LCM 12 & Under Championshipvenue
200 Breaststroke LCM 3:14.17 A+6.98s to AA·+41.58s to Sectionals 2026-07-19 2026 NE MST/ESC LCM 12 & Under Championshipvenue
50 Butterfly LCM 39.76 B+1.07s to BB·+13.47s to Futures 2026-05-10 2026 NE CRA MIT Team Specialty LC Meetvenue
100 Butterfly LCM 1:30.76 B+3.47s to BB·+30.57s to Sectionals 2026-01-01 2026 ne cs spring fling results
200 Individual Medley LCM 3:03.98 BB+9.79s to A·+47.79s to Sectionals 2026-01-01 NE CS 2026 Summer Solstice at Brown University
400 Individual Medley LCM 6:26.74 BB+11.35s to A·+96.85s to Sectionals 2026-05-08 2026 NE CRA MIT Team Specialty LC Meetvenue

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 30.44 flying 200 Free Relay (leg 4) 2025-02-15 2025 NE UVAC 10 & Under Champs
100 Freestyle SCY 1:10.95 flat 400 Free Relay 2025-02-14 2025 NE UVAC 10 & Under Champs
50 Breaststroke SCY 39.98 flying 200 Medley Relay (leg 2) 2025-02-15 2025 NE UVAC 10 & Under Champs
100 Freestyle LCM 1:18.83 flat 400 Free Relay 2025-07-12 2025 NE CS LCM 10 & U Champs
100 Freestyle LCM 1:16.12 flying 400 Free Relay (leg 4) 2025-07-13 2025 NE CS LCM 10 & U Champs
100 Breaststroke LCM 1:37.37 flying 400 Medley Relay (leg 2) 2025-08-07 2025 EZ LC Age Group 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 11-12 · SCY

2723 points (5/5 events)

EventTime Points
500 FR SCY 5:53.37 708
100 BK SCY 1:26.78 322
100 BR SCY 1:18.06 654
100 FL SCY 1:18.96 419
200 IM SCY 2:34.83 620

IMR 11-12 · SCY

2750 points (5/5 events)

EventTime Points
200 FR SCY 2:12.39 690
50 BK SCY 38.24 400
50 BR SCY 35.91 674
50 FL SCY 34.83 449
100 IM SCY 1:15.12 537

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

PR splits

100 Freestyle SCY 1:00.63

29.11
31.52

Front half 29.11s · back half 31.52s

200 Freestyle SCY 2:12.39

29.86
33.40
35.10
34.03

Front half 63.26s · back half 69.13s

500 Freestyle SCY 5:53.37

31.48
35.00
35.73
36.91
36.02
36.00
36.13
35.81
36.07
34.22

Front half 175.14s · back half 178.23s

1000 Freestyle SCY 12:18.42

33.03
37.52
38.24
37.43
37.81
37.97
37.80
37.83
37.03
37.34
37.07
37.64
37.02
37.49
36.68
36.78
36.61
36.50
36.88
33.75

Front half 372.00s · back half 366.42s

1650 Freestyle SCY 20:32.13

31.74
35.81
37.51
37.58
37.29
37.67
37.16
38.19
36.40
37.44
36.84
37.54
37.90
36.49
37.15
37.49
38.34
38.55
37.56
37.95
38.85
38.39
37.51
38.35
38.01
37.70
38.17
37.63
37.30
37.47
37.52
37.33
35.30

100 Backstroke SCY 1:26.78

42.55
44.23

Front half 42.55s · back half 44.23s

100 Breaststroke SCY 1:18.06

36.93
41.13

Front half 36.93s · back half 41.13s

200 Breaststroke SCY 2:51.26 split/total mismatch

39.32
43.89
45.58
42.47

100 Butterfly SCY 1:18.96 split/total mismatch

36.62
5.72

Front half 36.62s · back half 42.34s

100 Individual Medley SCY 1:15.12

36.75
38.37

Front half 36.75s · back half 38.37s

200 Individual Medley SCY 2:34.83

35.04
41.64
44.06
34.09

Front half 76.68s · back half 78.15s

400 Individual Medley SCY 5:40.01 split/total mismatch

37.70
45.45
44.40
45.88
44.30
46.30
38.86
37.12

100 Freestyle LCM 1:11.95 split/total mismatch

34.06
3.83

Front half 34.06s · back half 37.89s

200 Freestyle LCM 2:35.41

75.06
80.35

Front half 75.06s · back half 80.35s

400 Freestyle LCM 5:31.41 split/total mismatch

35.58
40.50
42.49
42.43
43.08
43.33
42.61
41.39

800 Freestyle LCM 10:51.84

77.74
83.61
84.11
83.54
82.38
81.08
80.37
79.01

Front half 329.00s · back half 322.84s

1500 Freestyle LCM 20:46.77

79.32
83.61
84.80
84.07
83.74
83.99
84.97
83.25
84.18
83.88
83.36
83.82
83.20
82.45
78.13

100 Backstroke LCM 1:35.18

46.72
48.46

Front half 46.72s · back half 48.46s

200 Breaststroke LCM 3:14.17

93.47
100.70

Front half 93.47s · back half 100.70s

100 Butterfly LCM 1:30.76 split/total mismatch

41.13
8.50

Front half 41.13s · back half 49.63s

200 Individual Medley LCM 3:03.98 split/total mismatch

40.56
50.09
52.25
41.08

400 Individual Medley LCM 6:26.74

92.90
102.96
103.12
87.76

Front half 195.86s · back half 190.88s

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.

25 Freestyle SCY 23.29 1 swim
50 Freestyle SCY 28.46 18 swims
100 Freestyle SCY 1:00.63 25 swims
200 Freestyle SCY 2:12.39 20 swims
500 Freestyle SCY 5:53.37 12 swims
1000 Freestyle SCY 12:18.42 3 swims
1650 Freestyle SCY 20:32.13 6 swims
25 Backstroke SCY 27.76 1 swim
50 Backstroke SCY 38.24 10 swims
100 Backstroke SCY 1:26.78 3 swims
25 Breaststroke SCY 30.28 1 swim
50 Breaststroke SCY 35.91 32 swims
100 Breaststroke SCY 1:18.06 33 swims
200 Breaststroke SCY 2:51.26 12 swims
25 Butterfly SCY 26.44 2 swims
50 Butterfly SCY 34.83 9 swims
100 Butterfly SCY 1:18.96 7 swims
100 Individual Medley SCY 1:15.12 15 swims
200 Individual Medley SCY 2:34.83 13 swims
400 Individual Medley SCY 5:40.01 2 swims
50 Freestyle LCM 33.45 20 swims
100 Freestyle LCM 1:11.95 25 swims
200 Freestyle LCM 2:35.41 15 swims
400 Freestyle LCM 5:31.41 11 swims
800 Freestyle LCM 10:51.84 1 swim
1500 Freestyle LCM 20:46.77 1 swim
50 Backstroke LCM 45.14 8 swims
100 Backstroke LCM 1:35.18 5 swims
50 Breaststroke LCM 41.49 27 swims
100 Breaststroke LCM 1:30.21 27 swims
200 Breaststroke LCM 3:14.17 8 swims
50 Butterfly LCM 39.76 11 swims
100 Butterfly LCM 1:30.76 10 swims
200 Individual Medley LCM 3:03.98 13 swims
400 Individual Medley LCM 6:26.74 1 swim