Sean Zhao

Mage 14GUILINMIOKOZILPPD

104 plausible swims · 11 meets · 2023-08-03 → 2026-03-15

Personal records

Event	Course	Best	Cut	Date	Meet
100 Freestyle	SCY	47.90	AAAA·Sectionals ✓+1.51s to Futures	2026-03-15	2026 ISI Winter 11-14 Age Group Championships venue
200 Freestyle	SCY	1:43.46	AAAA·Sectionals ✓+1.87s to Futures	2026-03-13	2026 ISI Winter 11-14 Age Group Championships venue
500 Freestyle	SCY	4:50.40	AAA+0.91s to AAAA·Sectionals ✓+13.31s to Futures	2025-03-15	2025 ISI Winter 11-14 Age Group Championships venue
1000 Freestyle	SCY	10:20.51	AAA+19.32s to AAAA·+8.32s to Sectionals	2024-03-07	2024 IL Swimming SC Age Group Championships slow pool
1650 Freestyle	SCY	16:49.57	AAA+2.08s to AAAA·Sectionals ✓+44.08s to Futures	2025-03-13	2025 ISI Winter 11-14 Age Group Championships venue
100 Backstroke	SCY	52.76	AAAA·Sectionals ✓+1.27s to Futures	2026-03-14	2026 ISI Winter 11-14 Age Group Championships venue
200 Backstroke	SCY	1:55.23	AAAA·Sectionals ✓+2.44s to Futures	2026-03-15	2026 ISI Winter 11-14 Age Group Championships venue
200 Breaststroke	SCY	2:22.54	AA+4.75s to AAA·Sectionals ✓+14.55s to Futures	2024-06-15	2024 CZ Multi-Cultural Meet slow pool
100 Butterfly	SCY	56.78	AA+1.39s to AAA·+3.19s to Sectionals	2024-06-15	2024 CZ Multi-Cultural Meet slow pool
200 Butterfly	SCY	2:08.43	AA+5.14s to AAA·+6.94s to Sectionals	2024-06-14	2024 CZ Multi-Cultural Meet slow pool
100 Individual Medley	SCY	58.70		2024-03-08	2024 IL Swimming SC Age Group Championships slow pool
200 Individual Medley	SCY	1:55.25	AAAA·Sectionals ✓+1.36s to Futures	2026-03-14	2026 ISI Winter 11-14 Age Group Championships venue
400 Individual Medley	SCY	4:06.64	AAAA·Futures ✓+13.95s to US Open	2026-03-13	2026 ISI Winter 11-14 Age Group Championships venue
50 Freestyle	LCM	2:16.08	+101.79s to B·+109.79s to Sectionals	2025-07-24	Illinois Swimming Age Group Champs LC 25
100 Freestyle	LCM	54.96	AAAA·Sectionals ✓+1.37s to Futures	2025-07-24	Illinois Swimming Age Group Champs LC 25 venue
200 Freestyle	LCM	1:59.46	AAAA·Sectionals ✓+1.67s to Futures	2025-07-26	Illinois Swimming Age Group Champs LC 25 venue
400 Freestyle	LCM	4:19.16	AAAA·Sectionals ✓+9.17s to Futures	2025-07-25	Illinois Swimming Age Group Champs LC 25 venue
800 Freestyle	LCM	9:00.65	AAAA·Sectionals ✓+19.96s to Futures	2025-08-07	2025 Central Zone 14 & Under Championship Mee fast pool
1500 Freestyle	LCM	17:42.55	AAA+19.06s to AAAA·+2.46s to Sectionals	2024-07-21	2024 IL Swimming LC Age Group Championships venue
100 Backstroke	LCM	1:01.06	AAAA·Sectionals ✓+0.47s to Futures	2025-07-24	Illinois Swimming Age Group Champs LC 25 venue
200 Backstroke	LCM	2:13.97	AAAA·Sectionals ✓+2.08s to Futures	2025-07-25	Illinois Swimming Age Group Champs LC 25 venue
200 Individual Medley	LCM	2:14.88	AAAA·Sectionals ✓+2.09s to Futures	2025-07-27	Illinois Swimming Age Group Champs LC 25 venue
400 Individual Medley	LCM	4:47.00	AAAA·Sectionals ✓+4.61s to Futures	2025-07-26	Illinois Swimming Age Group Champs LC 25 venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 14.

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

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	SCY	21.92	flat	200 Free Relay	2026-03-12	2026 ISI Winter 11-14 Age Group Championships
50 Freestyle	SCY	22.23	flying	200 Medley Relay (leg 4)	2025-03-14	2025 ISI Winter 11-14 Age Group Championships
50 Freestyle	SCY	22.37	flying	200 Free Relay (leg 2)	2025-03-13	2025 ISI Winter 11-14 Age Group Championships
100 Freestyle	SCY	48.40	flying	400 Medley Relay (leg 4)	2025-03-15	2025 ISI Winter 11-14 Age Group Championships
100 Freestyle	SCY	46.90	flying	400 Free Relay (leg 4)	2026-03-15	2026 ISI Winter 11-14 Age Group Championships
100 Backstroke	SCY	57.49	flat	400 Medley Relay	2024-03-09	2024 IL Swimming SC Age Group Championships
50 Freestyle	LCM	25.16	flying	200 Free Relay (leg 4)	2025-07-24	Illinois Swimming Age Group Champs LC 25
100 Freestyle	LCM	57.37	flat	400 Free Relay	2024-07-20	2024 IL Swimming LC Age Group Championships
100 Freestyle	LCM	54.81	flying	400 Free Relay (leg 4)	2025-07-26	Illinois Swimming Age Group Champs LC 25

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 13-14 · SCY

5722 points (6/6 events)

Event	Time	Points
500 FR SCY	4:50.40	988
200 BK SCY	1:55.23	1019
200 BR SCY	2:22.54	779
200 FL SCY	2:08.43	767
200 IM SCY	1:55.25	1086
400 IM SCY	4:06.64	1083

IMR 13-14 · SCY

4036 points (4/5 events — incomplete)

Event	Time	Points
200 FR SCY	1:43.46	1100
100 BK SCY	52.76	1042
100 FL SCY	56.78	808
200 IM SCY	1:55.25	1086
100 BR SCY	—	0

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

PR splits

100 Freestyle SCY 47.90

23.25

24.65

Front half 23.25s · back half 24.65s

200 Freestyle SCY 1:43.46

24.08

26.30

26.58

26.50

Front half 50.38s · back half 53.08s

500 Freestyle SCY 4:50.40 RT 0.65s

26.24

28.55

29.73

29.90

29.66

29.99

29.89

29.64

28.77

28.03

Front half 144.08s · back half 146.32s

1000 Freestyle SCY 10:20.51

27.69

30.17

30.82

31.18

30.75

30.96

31.51

31.75

31.16

31.54

31.52

31.66

31.56

31.78

31.60

31.71

31.47

31.30

30.73

29.65

Front half 307.53s · back half 312.98s

1650 Freestyle SCY 16:49.57 RT 0.67s

26.14

29.40

29.73

29.90

30.63

30.39

30.38

30.27

30.82

30.68

30.65

30.90

30.81

30.68

30.81

30.92

30.96

30.84

30.89

30.78

31.10

30.72

31.36

31.04

31.22

31.04

31.23

31.25

31.22

31.21

30.50

29.87

100 Backstroke SCY 52.76

25.45

27.31

Front half 25.45s · back half 27.31s

200 Backstroke SCY 1:55.23

26.68

29.39

29.95

29.21

Front half 56.07s · back half 59.16s

200 Breaststroke SCY 2:22.54

32.41

36.62

37.62

35.89

Front half 69.03s · back half 73.51s

100 Butterfly SCY 56.78

26.81

29.97

Front half 26.81s · back half 29.97s

200 Butterfly SCY 2:08.43

28.49

33.59

34.11

32.24

Front half 62.08s · back half 66.35s

100 Individual Medley SCY 58.70

27.43

31.27

Front half 27.43s · back half 31.27s

200 Individual Medley SCY 1:55.25

25.27

27.95

35.30

26.73

Front half 53.22s · back half 62.03s

400 Individual Medley SCY 4:06.64

26.20

29.45

30.44

31.03

35.70

36.82

29.80

27.20

Front half 117.12s · back half 129.52s

50 Freestyle LCM 2:16.08 split/total mismatch

29.29

33.37

41.70

31.72

100 Freestyle LCM 54.96 RT 0.66s

26.62

28.34

Front half 26.62s · back half 28.34s

200 Freestyle LCM 1:59.46 RT 0.67s

28.02

30.13

30.69

30.62

Front half 58.15s · back half 61.31s

400 Freestyle LCM 4:19.16 RT 0.68s

29.02

31.41

32.91

33.17

33.29

33.55

33.45

32.36

Front half 126.51s · back half 132.65s

800 Freestyle LCM 9:00.65

29.89

33.00

34.00

34.62

34.33

34.50

34.07

34.03

33.89

34.29

33.94

34.33

34.13

34.36

33.87

33.40

Front half 268.44s · back half 272.21s

1500 Freestyle LCM 17:42.55

31.18

34.17

35.15

35.51

35.82

34.93

35.77

35.82

35.09

35.81

35.79

36.05

35.82

35.77

35.51

35.99

35.86

35.53

35.75

35.71

35.53

35.76

35.57

35.87

35.84

35.71

35.62

35.86

33.94

Front half 528.50s · back half 534.05s

100 Backstroke LCM 1:01.06 RT 0.65s

29.61

31.45

Front half 29.61s · back half 31.45s

200 Backstroke LCM 2:13.97

31.26

33.90

34.13

34.68

Front half 65.16s · back half 68.81s

200 Individual Medley LCM 2:14.88 RT 0.64s

28.62

33.63

41.25

31.38

Front half 62.25s · back half 72.63s

400 Individual Medley LCM 4:47.00 RT 0.67s

30.72

36.18

35.77

35.40

43.06

42.53

32.59

30.75

Front half 138.07s · back half 148.93s

Reaction time

fastest 0.58s average 0.676s slowest 0.93s 24 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.

100 Freestyle SCY 47.90 4 swims

200 Freestyle SCY 1:43.46 8 swims

500 Freestyle SCY 4:50.40 2 swims

1000 Freestyle SCY 10:20.51 1 swim

1650 Freestyle SCY 16:49.57 1 swim

100 Backstroke SCY 52.76 8 swims

200 Backstroke SCY 1:55.23 8 swims

200 Breaststroke SCY 2:22.54 2 swims

100 Butterfly SCY 56.78 2 swims

200 Butterfly SCY 2:08.43 2 swims

100 Individual Medley SCY 58.70 2 swims

200 Individual Medley SCY 1:55.25 8 swims

400 Individual Medley SCY 4:06.64 2 swims

50 Freestyle LCM 2:16.08 1 swim

100 Freestyle LCM 54.96 2 swims

200 Freestyle LCM 1:59.46 11 swims

400 Freestyle LCM 4:19.16 5 swims

800 Freestyle LCM 9:00.65 4 swims

1500 Freestyle LCM 17:42.55 1 swim

100 Backstroke LCM 1:01.06 5 swims

200 Backstroke LCM 2:13.97 9 swims

200 Individual Medley LCM 2:14.88 10 swims

400 Individual Medley LCM 4:47.00 6 swims