Roger Zhu

Mage 18MAMDEST

320 plausible swims · 47 meets · 2016-05-07 → 2024-07-01

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 22.68 AA+0.99s to AAA·+0.29s to Sectionals 2023-02-25 2023 MD LSC SR SCY Championhips venue
100 Freestyle SCY 49.13 AA+1.44s to AAA·+0.64s to Sectionals 2022-02-27 2022 MD LSC Senior Championships venue
200 Freestyle SCY 1:47.04 AA+1.65s to AAA·+0.75s to Sectionals 2022-02-25 2022 MD LSC Senior Championships venue
500 Freestyle SCY 5:01.31 A+1.62s to AA·+13.92s to Sectionals 2024-01-15 2024 Retriever Classic venue
1000 Freestyle SCY 10:59.46 BB+2.47s to A·+59.97s to Sectionals 2023-12-29 2023 Speedo IMX Distance Challenge venue
1650 Freestyle SCY 17:30.03 A+0.64s to AA·+46.04s to Sectionals 2023-11-11 2023 FSC & EST Distance Dual
50 Backstroke SCY 25.28 AA+0.99s to AAA·+1.59s to Futures 2024-02-23 2024 MD LSC Senior Champs venue
100 Backstroke SCY 53.64 AA+2.05s to AAA·Sectionals ✓+2.15s to Futures 2024-02-24 2024 MD LSC Senior Champs venue
200 Backstroke SCY 1:57.06 AA+3.57s to AAA·Sectionals ✓+4.27s to Futures 2022-02-27 2022 MD LSC Senior Championships venue
50 Breaststroke SCY 38.14 +2.55s to B·+11.85s to Futures 2017-02-11 GBSA - 2017 Last Chance State Championship Q venue
100 Breaststroke SCY 1:01.58 AA+2.69s to AAA·+0.09s to Sectionals 2024-02-23 2024 MD LSC Senior Champs venue
200 Breaststroke SCY 2:21.47 BB+1.88s to A·+6.48s to Sectionals 2022-02-26 2022 MD LSC Senior Championships venue
50 Butterfly SCY 23.56 AAA+0.37s to AAAA·+0.67s to Futures 2024-02-25 2024 MD LSC Senior Champs venue
100 Butterfly SCY 51.13 AAA+1.94s to AAAA·Sectionals ✓+0.54s to Futures 2024-02-23 2024 MD LSC Senior Champs venue
200 Butterfly SCY 1:58.99 AA+3.10s to AAA·Sectionals ✓+5.30s to Futures 2024-02-24 2024 MD LSC Senior Champs venue
100 Individual Medley SCY 1:05.75 2017-03-04 2017 MD LSC 14 & U CHAMPIONSHIPS venue
200 Individual Medley SCY 1:59.43 AA+3.24s to AAA·+0.04s to Sectionals 2022-02-27 2022 MD LSC Senior Championships venue
400 Individual Medley SCY 4:21.68 AA+10.89s to AAA·+6.59s to Sectionals 2024-01-14 2024 Retriever Classic venue
50 Freestyle LCM 25.74 AA+0.65s to AAA·+0.25s to Sectionals 2023-07-08 2023 Sandbox Invitational venue
100 Freestyle LCM 56.47 AA+1.28s to AAA·+0.98s to Sectionals 2023-08-02 2023 Speedo Maryland Long Course Championship fast pool
200 Freestyle LCM 2:04.70 AA+4.01s to AAA·+3.41s to Sectionals 2022-08-05 2022 MD LSC LC Championships venue
400 Freestyle LCM 4:42.86 BB+2.17s to A·+25.27s to Sectionals 2024-04-27 2024 NAAC Carol Chidester Invite venue
50 Backstroke LCM 30.54 AA+1.25s to AAA·+2.65s to Futures 2023-08-02 2023 Speedo Maryland Long Course Championship fast pool
100 Backstroke LCM 1:04.30 A+0.11s to AA·+2.31s to Sectionals 2023-08-04 2023 Speedo Maryland Long Course Championship fast pool
200 Backstroke LCM 2:22.57 A+2.78s to AA·+7.78s to Sectionals 2023-07-09 2023 Sandbox Invitational venue
50 Breaststroke LCM 40.93 B+2.94s to BB·+10.04s to Futures 2016-06-03 2016 Eagle Swim Team Speedo Sizzler
100 Breaststroke LCM 1:17.34 BB+2.65s to A·+7.65s to Sectionals 2024-04-27 2024 NAAC Carol Chidester Invite venue
200 Breaststroke LCM 3:00.67 B+3.78s to BB·+28.08s to Sectionals 2021-07-10 2021 EST July Invitational venue
50 Butterfly LCM 27.35 AAA+1.26s to AAAA·+1.06s to Futures 2024-07-01 KA Firecracker Classic Long Course A/BB/C Invitational
100 Butterfly LCM 1:00.09 AA+1.20s to AAA·Sectionals ✓+2.10s to Futures 2023-08-04 2023 Speedo Maryland Long Course Championship fast pool
200 Butterfly LCM 2:27.80 BB+3.91s to A·+11.51s to Sectionals 2022-08-04 2022 MD LSC LC Championships venue
200 Individual Medley LCM 2:18.02 AA+2.33s to AAA·+1.83s to Sectionals 2023-07-08 2023 Sandbox Invitational venue
400 Individual Medley LCM 5:18.65 BB+0.66s to A·+28.76s to Sectionals 2022-06-04 2022 Eagle Swim Team Speedo Sizzler venue

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
50 Freestyle SCY 25.67 flying 200 Free Relay (leg 2) 2017-03-02 2017 MD LSC 14 & U CHAMPIONSHIPS
100 Freestyle SCY 57.65 flying 400 Free Relay (leg 3) 2017-03-04 2017 MD LSC 14 & U CHAMPIONSHIPS
50 Backstroke SCY 29.86 flat 200 Medley Relay 2017-03-05 2017 MD LSC 14 & U CHAMPIONSHIPS
50 Freestyle LCM 32.13 flying 200 Free Relay (leg 4) 2016-08-05 2016 MD LSC LC Championships
100 Freestyle LCM 54.74 flying 400 Free Relay (leg 3) 2016-07-10 2016 RAC SANDBOX INVITATIONAL
50 Breaststroke LCM 44.42 flying 200 Medley Relay (leg 2) 2016-08-06 2016 MD LSC LC Championships
50 Butterfly LCM 38.57 flying 200 Medley Relay (leg 3) 2016-07-08 2016 RAC SANDBOX 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 17-18 · SCY

4486 points (6/6 events)

EventTime Points
500 FR SCY 5:01.31 738
200 BK SCY 1:57.06 782
200 BR SCY 2:21.47 636
200 FL SCY 1:58.99 785
200 IM SCY 1:59.43 793
400 IM SCY 4:21.68 752

IMR 17-18 · SCY

4006 points (5/5 events)

EventTime Points
200 FR SCY 1:47.04 820
100 BK SCY 53.64 757
100 BR SCY 1:01.58 751
100 FL SCY 51.13 885
200 IM SCY 1:59.43 793

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

PR splits

100 Freestyle SCY 49.13

24.10
25.03

Front half 24.10s · back half 25.03s

200 Freestyle SCY 1:47.04

25.48
27.60
26.88
27.08

Front half 53.08s · back half 53.96s

500 Freestyle SCY 5:01.31

26.58
15.14
43.98
30.70
30.69
30.67
30.88
31.28
30.89
30.50

Front half 147.09s · back half 154.22s

100 Backstroke SCY 53.64

25.85
27.79

Front half 25.85s · back half 27.79s

200 Backstroke SCY 1:57.06

28.71
30.19
29.18
28.98

Front half 58.90s · back half 58.16s

100 Breaststroke SCY 1:01.58

28.88
32.70

Front half 28.88s · back half 32.70s

200 Breaststroke SCY 2:21.47

32.64
35.33
36.52
36.98

Front half 67.97s · back half 73.50s

100 Butterfly SCY 51.13

24.09
27.04

Front half 24.09s · back half 27.04s

200 Butterfly SCY 1:58.99

27.87
31.17
29.70
30.25

Front half 59.04s · back half 59.95s

100 Individual Medley SCY 1:05.75

29.83
35.92

Front half 29.83s · back half 35.92s

200 Individual Medley SCY 1:59.43

25.74
30.14
35.81
27.74

Front half 55.88s · back half 63.55s

400 Individual Medley SCY 4:21.68

26.97
29.97
33.90
35.21
37.38
38.39
30.17
29.69

Front half 126.05s · back half 135.63s

100 Freestyle LCM 56.47

27.86
28.61

Front half 27.86s · back half 28.61s

200 Freestyle LCM 2:04.70

29.54
31.93
31.21
32.02

Front half 61.47s · back half 63.23s

400 Freestyle LCM 4:42.86

32.85
36.04
35.98
36.69
36.05
36.81
35.09
33.35

Front half 141.56s · back half 141.30s

100 Backstroke LCM 1:04.30

31.69
32.61

Front half 31.69s · back half 32.61s

200 Backstroke LCM 2:22.57

33.67
36.34
35.98
36.58

Front half 70.01s · back half 72.56s

100 Breaststroke LCM 1:17.34

36.58
40.76

Front half 36.58s · back half 40.76s

200 Breaststroke LCM 3:00.67

42.03
45.87
46.59
46.18

Front half 87.90s · back half 92.77s

100 Butterfly LCM 1:00.09

28.60
31.49

Front half 28.60s · back half 31.49s

200 Butterfly LCM 2:27.80

33.19
37.65
38.25
38.71

Front half 70.84s · back half 76.96s

200 Individual Medley LCM 2:18.02

29.30
35.09
41.24
32.39

Front half 64.39s · back half 73.63s

400 Individual Medley LCM 5:18.65

31.58
35.73
41.88
41.33
47.20
47.58
36.56
36.79

Front half 150.52s · back half 168.13s

Reaction time

fastest 0.62s average 0.640s slowest 0.67s 4 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.

Progression

Faster times are higher. One card per event, all courses & history.

50 Freestyle SCY 22.68 14 swims
100 Freestyle SCY 49.13 15 swims
200 Freestyle SCY 1:47.04 16 swims
500 Freestyle SCY 5:01.31 8 swims
1000 Freestyle SCY 10:59.46 3 swims
1650 Freestyle SCY 17:30.03 4 swims
50 Backstroke SCY 25.28 10 swims
100 Backstroke SCY 53.64 15 swims
200 Backstroke SCY 1:57.06 14 swims
50 Breaststroke SCY 38.14 3 swims
100 Breaststroke SCY 1:01.58 8 swims
200 Breaststroke SCY 2:21.47 7 swims
50 Butterfly SCY 23.56 5 swims
100 Butterfly SCY 51.13 19 swims
200 Butterfly SCY 1:58.99 10 swims
100 Individual Medley SCY 1:05.75 5 swims
200 Individual Medley SCY 1:59.43 9 swims
400 Individual Medley SCY 4:21.68 4 swims
50 Freestyle LCM 25.74 14 swims
100 Freestyle LCM 56.47 19 swims
200 Freestyle LCM 2:04.70 15 swims
400 Freestyle LCM 4:42.86 2 swims
50 Backstroke LCM 30.54 4 swims
100 Backstroke LCM 1:04.30 15 swims
200 Backstroke LCM 2:22.57 17 swims
50 Breaststroke LCM 40.93 2 swims
100 Breaststroke LCM 1:17.34 8 swims
200 Breaststroke LCM 3:00.67 1 swim
50 Butterfly LCM 27.35 6 swims
100 Butterfly LCM 1:00.09 17 swims
200 Butterfly LCM 2:27.80 5 swims
200 Individual Medley LCM 2:18.02 21 swims
400 Individual Medley LCM 5:18.65 1 swim