Isaac Zheng

Mage 18IEMTPNIST

110 plausible swims · 20 meets · 2019-05-31 → 2025-02-02

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	23.79	BB+0.10s to A	2024-03-22	2024 Northwest Region Age Group Regionals venue
100 Freestyle	SCY	53.74	BB+1.75s to A	2024-01-14	2024 PN VAST 47th Annual Washington Open venue
200 Freestyle	SCY	2:01.53	BB+6.64s to A	2024-02-25	2024 PN February Age Group Invitational venue
100 Backstroke	SCY	1:05.22	B+4.33s to BB	2024-09-28	2024 PN IST Sockeye Sprints venue
200 Backstroke	SCY	2:29.33	+4.94s to B	2024-10-19	2024 PN IST Fall Open venue
50 Breaststroke	SCY	29.03	AA+1.04s to AAA	2024-02-24	2024 PN February Age Group Invitational venue
100 Breaststroke	SCY	1:02.30	A+0.71s to AA	2024-03-22	2024 Northwest Region Age Group Regionals venue
200 Breaststroke	SCY	2:21.68	BB+2.09s to A	2024-03-23	2024 Northwest Region Age Group Regionals venue
50 Butterfly	SCY	27.88	BB+1.39s to A	2024-10-19	2024 PN IST Fall Open venue
100 Butterfly	SCY	1:00.74	BB+4.55s to A	2024-01-13	2024 PN VAST 47th Annual Washington Open venue
200 Butterfly	SCY	2:29.59	+2.10s to B	2024-10-19	2024 PN IST Fall Open venue
100 Individual Medley	SCY	1:01.98		2024-09-29	2024 PN IST Sockeye Sprints venue
200 Individual Medley	SCY	2:12.59	BB+5.80s to A	2024-02-24	2024 PN February Age Group Invitational venue
50 Freestyle	LCM	27.69	BB+0.30s to A	2024-08-03	GroupA - WZ LCM Senior Champs 2024 venue
100 Freestyle	LCM	1:08.46	B+3.27s to BB	2024-06-22	2024 IST June Invtational venue
200 Freestyle	LCM	2:34.09	+0.50s to B	2022-06-05	2022 IE VS Apple Capital slow pool
400 Freestyle	LCM	5:27.75	+0.36s to B	2024-05-17	2024 PN IST Sockeye Springtime Madness venue
50 Backstroke	LCM	45.66	+8.37s to B	2019-06-02	2019 IE VS Apple Capital slow pool
100 Backstroke	LCM	1:19.58	+1.39s to B	2024-05-18	2024 PN IST Sockeye Springtime Madness venue
50 Breaststroke	LCM	37.12	BB+2.03s to A	2024-06-23	2024 IST June Invtational venue
100 Breaststroke	LCM	1:14.08	A+2.49s to AA	2024-08-01	GroupA - WZ LCM Senior Champs 2024 venue
200 Breaststroke	LCM	2:50.26	BB+6.97s to A	2024-07-20	2024 PN LC Senior Championships venue
50 Butterfly	LCM	32.90	B+0.61s to BB	2024-06-22	2024 IST June Invtational venue
100 Butterfly	LCM	1:54.60	+39.61s to B	2019-05-31	2019 IE VS Apple Capital slow pool
200 Butterfly	LCM	3:19.53	+31.74s to B	2022-06-04	2022 IE VS Apple Capital slow pool
200 Individual Medley	LCM	2:46.61	B+6.22s to BB	2022-06-04	2022 IE VS Apple Capital slow pool

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.

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

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	LCM	27.63	flying	200 Free Relay (leg 3)	2024-08-01	GroupA - WZ LCM Senior Champs 2024

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

1985 points (4/6 events — incomplete)

Event	Time	Points
200 BK SCY	2:29.33	377
200 BR SCY	2:21.68	633
200 FL SCY	2:29.59	395
200 IM SCY	2:12.59	580
500 FR SCY	—	0
400 IM SCY	—	0

IMR 17-18 · SCY

2813 points (5/5 events)

Event	Time	Points
200 FR SCY	2:01.53	560
100 BK SCY	1:05.22	421
100 BR SCY	1:02.30	725
100 FL SCY	1:00.74	527
200 IM SCY	2:12.59	580

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

PR splits

100 Freestyle SCY 53.74 RT 0.49s

25.70

28.04

Front half 25.70s · back half 28.04s

200 Freestyle SCY 2:01.53 RT 0.48s

27.56

30.38

31.40

32.19

Front half 57.94s · back half 63.59s

100 Backstroke SCY 1:05.22

31.34

33.88

Front half 31.34s · back half 33.88s

100 Breaststroke SCY 1:02.30 RT 0.63s

29.08

33.22

Front half 29.08s · back half 33.22s

200 Breaststroke SCY 2:21.68 RT 0.52s

31.58

35.75

37.13

37.22

Front half 67.33s · back half 74.35s

100 Butterfly SCY 1:00.74 RT 0.54s

28.19

32.55

Front half 28.19s · back half 32.55s

100 Individual Medley SCY 1:01.98

30.03

31.95

Front half 30.03s · back half 31.95s

200 Individual Medley SCY 2:12.59 RT 0.59s

28.30

35.21

37.65

31.43

Front half 63.51s · back half 69.08s

200 Freestyle LCM 2:34.09

34.07

38.95

41.67

39.40

Front half 73.02s · back half 81.07s

400 Freestyle LCM 5:27.75 RT 0.65s

34.04

38.46

41.15

41.87

42.83

42.99

43.76

42.65

Front half 155.52s · back half 172.23s

100 Breaststroke LCM 1:14.08

34.39

39.69

Front half 34.39s · back half 39.69s

100 Butterfly LCM 1:54.60

50.60

64.00

Front half 50.60s · back half 64.00s

200 Butterfly LCM 3:19.53

37.82

46.19

52.78

62.74

Front half 84.01s · back half 115.52s

200 Individual Medley LCM 2:46.61

35.88

44.87

47.42

38.44

Front half 80.75s · back half 85.86s

Reaction time

fastest 0.47s average 0.571s slowest 0.70s 22 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 23.79 10 swims

100 Freestyle SCY 53.74 9 swims

200 Freestyle SCY 2:01.53 8 swims

100 Backstroke SCY 1:05.22 2 swims

200 Backstroke SCY 2:29.33 1 swim

50 Breaststroke SCY 29.03 5 swims

100 Breaststroke SCY 1:02.30 14 swims

200 Breaststroke SCY 2:21.68 11 swims

50 Butterfly SCY 27.88 1 swim

100 Butterfly SCY 1:00.74 4 swims

200 Butterfly SCY 2:29.59 1 swim

100 Individual Medley SCY 1:01.98 2 swims

200 Individual Medley SCY 2:12.59 6 swims

50 Freestyle LCM 27.69 6 swims

100 Freestyle LCM 1:08.46 2 swims

200 Freestyle LCM 2:34.09 3 swims

400 Freestyle LCM 5:27.75 1 swim

50 Backstroke LCM 45.66 1 swim

100 Backstroke LCM 1:19.58 3 swims

50 Breaststroke LCM 37.12 2 swims

100 Breaststroke LCM 1:14.08 7 swims

200 Breaststroke LCM 2:50.26 4 swims

50 Butterfly LCM 32.90 2 swims

100 Butterfly LCM 1:54.60 1 swim

200 Butterfly LCM 3:19.53 1 swim

200 Individual Medley LCM 2:46.61 3 swims