Isaac Chang

Mage 18CAIAMTPCUTBCACITIUN-20

149 plausible swims · 34 meets · 2020-12-18 → 2026-06-06

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	21.59	AAA+0.90s to AAAA·Sectionals ✓+0.30s to Futures	2026-02-15	2026 MVN Lunar AAPI Festival venue
100 Freestyle	SCY	46.54	AAA+1.05s to AAAA·Sectionals ✓+0.15s to Futures	2026-02-14	2026 MVN Lunar AAPI Festival venue
200 Freestyle	SCY	1:42.83	AAA+2.24s to AAAA·Sectionals ✓+1.24s to Futures	2025-11-08	2025 Legends of Coaching Series_Peter Daland venue
500 Freestyle	SCY	4:47.31	AA+0.62s to AAA·Sectionals ✓+10.22s to Futures	2025-11-16	BCA Fall Festival venue
50 Backstroke	SCY	24.86	AA+0.57s to AAA·+1.17s to Futures	2025-09-14	BCA Fall Intersquad venue
100 Backstroke	SCY	53.42	AA+1.83s to AAA·Sectionals ✓+1.93s to Futures	2025-09-21	2025 TSM Aquatics Season Opener venue
200 Backstroke	SCY	1:57.08	AA+3.59s to AAA·Sectionals ✓+4.29s to Futures	2024-11-10	2024 Legends of Coaching Series-Kevin Perry venue
50 Breaststroke	SCY	26.88	AAA+0.19s to AAAA·+0.59s to Futures	2025-09-14	BCA Fall Intersquad venue
100 Breaststroke	SCY	55.78	AAAA·Futures ✓+0.29s to Winter JNs	2026-02-27	2026 SI CA/NV Speedo Sectionals Oceanside venue
200 Breaststroke	SCY	2:03.42	AAA+1.23s to AAAA·Futures ✓+1.83s to Winter JNs	2025-11-09	2025 Legends of Coaching Series_Peter Daland venue
50 Butterfly	SCY	22.72	AAAA·Futures ✓+0.73s to Jr Nationals	2025-10-26	TORR Spooky Splash venue
100 Butterfly	SCY	49.26	AAA+0.07s to AAAA·Futures ✓+0.57s to Winter JNs	2025-01-01	2025 Speedo Winter Junior Championships - West
200 Butterfly	SCY	1:48.64	AAAA·Winter JNs ✓+0.75s to Jr Nationals	2026-02-28	2026 SI CA/NV Speedo Sectionals Oceanside venue
100 Individual Medley	SCY	52.51		2025-09-14	BCA Fall Intersquad venue
200 Individual Medley	SCY	1:50.76	AAAA·Futures ✓+1.17s to Winter JNs	2025-01-01	2025 Speedo Winter Junior Championships - West
400 Individual Medley	SCY	4:03.01	AAA+3.62s to AAAA·Futures ✓+6.52s to Winter JNs	2025-10-25	TORR Spooky Splash venue
50 Freestyle	LCM	25.44	AA+0.35s to AAA·Sectionals ✓+0.85s to Futures	2025-06-01	CITI Summer Sizzler venue
100 Freestyle	LCM	55.62	AA+0.43s to AAA·Sectionals ✓+2.03s to Futures	2025-06-13	2025 SCS June AG Invite @ La Mirada Armada venue
200 Freestyle	LCM	2:03.91	AA+3.22s to AAA·Sectionals ✓+6.12s to Futures	2025-04-12	2025 CA MVN Fran Crippen SMOC venue
100 Backstroke	LCM	1:02.53	AA+1.14s to AAA·Sectionals ✓+1.94s to Futures	2025-07-11	2025 LAI Entries venue
50 Breaststroke	LCM	30.47	AAAA·Futures ✓+0.88s to Jr Nationals	2025-07-31	2025 Speedo Junior National Championships fast pool
100 Breaststroke	LCM	1:05.12	AAAA·Winter JNs ✓+0.03s to Jr Nationals	2025-07-30	2025 Speedo Junior National Championships fast pool
200 Breaststroke	LCM	2:24.72	AAA+1.83s to AAAA·Futures ✓+0.63s to Winter JNs	2025-08-02	2025 Speedo Junior National Championships fast pool
50 Butterfly	LCM	26.90	AAA+0.81s to AAAA·+0.61s to Futures	2026-06-06	2026 BCA June LC Meet venue
100 Butterfly	LCM	56.89	AAA+0.60s to AAAA·Futures ✓+0.40s to Winter JNs	2026-05-23	2026 CA 30th NOVA-Speedo Grand Challenge venue
200 Butterfly	LCM	2:19.03	A+1.14s to AA·Sectionals ✓+8.84s to Futures	2024-03-02	2024 CA/NV Speedo Sectional venue
200 Individual Medley	LCM	2:13.95	AAA+4.36s to AAAA·Sectionals ✓+1.16s to Futures	2024-07-27	2024 USAS Futures Championships-Minneapolis 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

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	SCY	20.82	flying	200 Free Relay (leg 4)	2025-12-12	2025 West Speedo Winter Juniors
50 Freestyle	SCY	21.70	flying	200 Medley Relay (leg 4)	2024-12-21	2024 CA-NV December Sectionals At BREA
100 Freestyle	SCY	48.87	flying	400 Free Relay (leg 3)	2024-12-22	2024 CA-NV December Sectionals At BREA
200 Freestyle	SCY	1:41.63	flying	800 Free Relay (leg 3)	2025-12-10	2025 West Speedo Winter Juniors
50 Butterfly	SCY	22.06	flying	200 Medley Relay (leg 3)	2025-12-10	2025 West Speedo Winter Juniors
100 Butterfly	SCY	48.79	flying	400 Medley Relay (leg 3)	2025-12-11	2025 West Speedo Winter Juniors

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

5558 points (6/6 events)

Event	Time	Points
500 FR SCY	4:47.31	852
200 BK SCY	1:57.08	782
200 BR SCY	2:03.42	958
200 FL SCY	1:48.64	1032
200 IM SCY	1:50.76	995
400 IM SCY	4:03.01	939

IMR 17-18 · SCY

4685 points (5/5 events)

Event	Time	Points
200 FR SCY	1:42.83	924
100 BK SCY	53.42	766
100 BR SCY	55.78	1011
100 FL SCY	49.26	989
200 IM SCY	1:50.76	995

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

PR splits

100 Freestyle SCY 46.54

22.47

24.07

Front half 22.47s · back half 24.07s

200 Freestyle SCY 1:42.83

24.20

26.14

26.07

26.42

Front half 50.34s · back half 52.49s

500 Freestyle SCY 4:47.31

25.74

28.50

29.44

30.49

29.92

29.57

30.01

29.32

27.48

26.84

Front half 144.09s · back half 143.22s

100 Backstroke SCY 53.42

25.94

27.48

Front half 25.94s · back half 27.48s

200 Backstroke SCY 1:57.08

27.44

29.54

30.32

29.78

Front half 56.98s · back half 60.10s

100 Breaststroke SCY 55.78

26.60

29.18

Front half 26.60s · back half 29.18s

200 Breaststroke SCY 2:03.42

27.36

31.26

31.61

33.19

Front half 58.62s · back half 64.80s

200 Butterfly SCY 1:48.64

24.86

27.72

27.73

28.33

Front half 52.58s · back half 56.06s

400 Individual Medley SCY 4:03.01

25.72

28.97

32.14

31.88

33.57

34.33

28.81

27.59

Front half 118.71s · back half 124.30s

200 Freestyle LCM 2:03.91

28.43

31.25

32.58

31.65

Front half 59.68s · back half 64.23s

100 Breaststroke LCM 1:05.12 RT 0.60s

30.86

34.26

Front half 30.86s · back half 34.26s

200 Breaststroke LCM 2:24.72 RT 0.59s

32.64

36.55

36.93

38.60

Front half 69.19s · back half 75.53s

100 Butterfly LCM 56.89

27.20

29.69

Front half 27.20s · back half 29.69s

200 Butterfly LCM 2:19.03

31.50

35.13

36.66

35.74

Front half 66.63s · back half 72.40s

200 Individual Medley LCM 2:13.95

28.63

33.74

38.10

33.48

Front half 62.37s · back half 71.58s

Reaction time

fastest 0.57s average 0.613s slowest 0.66s 10 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 21.59 6 swims

100 Freestyle SCY 46.54 6 swims

200 Freestyle SCY 1:42.83 6 swims

500 Freestyle SCY 4:47.31 1 swim

50 Backstroke SCY 24.86 2 swims

100 Backstroke SCY 53.42 3 swims

200 Backstroke SCY 1:57.08 1 swim

50 Breaststroke SCY 26.88 4 swims

100 Breaststroke SCY 55.78 17 swims

200 Breaststroke SCY 2:03.42 11 swims

50 Butterfly SCY 22.72 9 swims

100 Butterfly SCY 49.26 8 swims

200 Butterfly SCY 1:48.64 4 swims

100 Individual Medley SCY 52.51 2 swims

200 Individual Medley SCY 1:50.76 11 swims

400 Individual Medley SCY 4:03.01 5 swims

50 Freestyle LCM 25.44 1 swim

100 Freestyle LCM 55.62 3 swims

200 Freestyle LCM 2:03.91 2 swims

100 Backstroke LCM 1:02.53 1 swim

50 Breaststroke LCM 30.47 5 swims

100 Breaststroke LCM 1:05.12 13 swims

200 Breaststroke LCM 2:24.72 11 swims

50 Butterfly LCM 26.90 2 swims

100 Butterfly LCM 56.89 11 swims

200 Butterfly LCM 2:19.03 1 swim

200 Individual Medley LCM 2:13.95 3 swims