Bill Chang

Age: 15 years old
Age Category: 15-16
Team: Santa Clara Swim Club | Pacific Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Santa Clara Swim Club

Pacific Swimming

Western Zone

USA

Free 50 Y

23.55

12/12/2025

AA: 23.19 (+0.36s | 1.5%)

166

683

1,000+

Free 100 Y

52.01

12/12/2025

AA: 50.99 (+1.02s | 2.0%)

221

905

1,000+

50 Free

24.96

100 Free

27.05

52.01

100 Free

52.01

Free 200 Y

2:51.90

02/15/2020

B: 2:15.99 (+35.91s | 20.9%)

727

1,000+

Free 500 Y

6:17.91

10/01/2022

B: 6:08.39 (+9.52s | 2.5%)

405

1,000+

Back 50 Y

41.56

11/15/2019

561

1,000+

Breast 50 Y

28.77

12/12/2025

169

466

Breast 100 Y

1:04.71

12/12/2025

AA: 1:03.19 (+1.52s | 2.3%)

122

467

1,000+

50 Breast

29.97

100 Breast

34.74

1:04.71

100 Breast

1:04.71

Fly 50 Y

26.70

12/12/2025

134

557

1,000+

Fly 100 Y

1:04.91

10/25/2024

BB: 1:02.39 (+2.52s | 3.9%)

392

1,000+

IM 200 Y

2:26.09

11/15/2024

BB: 2:20.19 (+5.90s | 4.0%)

428

1,000+

Long course distance

Event	Time	Age	Date	Next Standard	Santa Clara Swim Club	Pacific Swimming	Western Zone	USA
Free 50 M	41.88	8	05/04/2019	B: 32.89 (+8.99s \| 21.5%)	50	634	1,000+	1,000+

Free 100 M	1:31.74	8	06/21/2019	B: 1:11.79 (+19.95s \| 21.7%)	52	607	1,000+	1,000+

Back 50 M	50.61	8	05/04/2019		45	369	1,000+	1,000+

Breast 50 M	58.60	8	05/04/2019		38	391	1,000+	1,000+

Breast 100 M	2:02.67	8	06/21/2019	B: 1:29.49 (+33.18s \| 27.0%)	48	543	1,000+	1,000+

Fly 50 M	50.52	8	05/04/2019		40	374	1,000+	1,000+

Above are the fastest times that Bill Chang has achieved in his swimming career. For each event, you can find Bill's best time, the corresponding time standard, as well as how much faster Bill needs to be to reach the next level. The last columns provide Bill rankings at the team and LSC levels. These rankings are based on the Bill's personal best, his current age category, and team; and are calculated from all the meets results.

Time Standards

Got the currrent age group time standard
Time standard for the next age group and the gap to reach it
Got the next age group’s time standard.

Short Course Distance

Event	Best Time	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL
Free 50 Y	23.55	22.79 (+0.76s \| 3.2%)	26.89	24.79	23.29 (+0.26s \| 1.1%)	22.19 (+1.36s \| 5.8%)	21.29 (+2.26s \| 9.6%)	21.29 (+2.26s \| 9.6%)	20.59 (+2.96s \| 12.6%)	20.09 (+3.46s \| 14.7%)	20.39 (+3.16s \| 13.4%)	N/A
Free 100 Y	52.01	50.09 (+1.92s \| 3.7%)	58.69	54.19	51.19 (+0.82s \| 1.6%)	48.19 (+3.82s \| 7.3%)	46.39 (+5.62s \| 10.8%)	46.39 (+5.62s \| 10.8%)	45.09 (+6.92s \| 13.3%)	43.49 (+8.52s \| 16.4%)	44.39 (+7.62s \| 14.7%)	N/A
Free 200 Y	2:51.90	1:48.89 (+63.01s \| 36.7%)	2:08.39 (+43.51s \| 25.3%)	1:58.59 (+53.31s \| 31.0%)	1:52.09 (+59.81s \| 34.8%)	1:45.79 (+66.11s \| 38.5%)	1:41.59 (+70.31s \| 40.9%)	1:41.59 (+70.31s \| 40.9%)	1:38.79 (+73.11s \| 42.5%)	1:36.49 (+75.41s \| 43.9%)	1:38.09 (+73.81s \| 42.9%)	N/A
Free 500 Y	6:17.91	4:55.99 (+81.92s \| 21.7%)	5:47.89 (+30.02s \| 7.9%)	5:21.19 (+56.72s \| 15.0%)	5:04.39 (+73.52s \| 19.5%)	4:47.79 (+90.12s \| 23.8%)	4:37.09 (+100.82s \| 26.7%)	4:37.09 (+100.82s \| 26.7%)	4:29.49 (+108.42s \| 28.7%)	4:22.09 (+115.82s \| 30.6%)	4:27.69 (+110.22s \| 29.2%)	N/A
Back 50 Y	41.56	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 50 Y	28.77	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 Y	1:04.71	1:03.89 (+0.82s \| 1.3%)	1:13.59	1:07.89	1:02.89 (+1.82s \| 2.8%)	1:00.89 (+3.82s \| 5.9%)	57.99 (+6.72s \| 10.4%)	57.99 (+6.72s \| 10.4%)	55.89 (+8.82s \| 13.6%)	54.19 (+10.52s \| 16.3%)	55.29 (+9.42s \| 14.6%)	N/A
Fly 50 Y	26.70	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Fly 100 Y	1:04.91	54.99 (+9.92s \| 15.3%)	1:03.89 (+1.02s \| 1.6%)	58.99 (+5.92s \| 9.1%)	55.49 (+9.42s \| 14.5%)	52.89 (+12.02s \| 18.5%)	50.59 (+14.32s \| 22.1%)	50.59 (+14.32s \| 22.1%)	48.99 (+15.92s \| 24.5%)	47.79 (+17.12s \| 26.4%)	48.39 (+16.52s \| 25.5%)	N/A
IM 200 Y	2:26.09	2:03.09 (+23.00s \| 15.7%)	2:23.29 (+2.80s \| 1.9%)	2:12.29 (+13.80s \| 9.4%)	2:04.69 (+21.40s \| 14.6%)	1:58.19 (+27.90s \| 19.1%)	1:53.89 (+32.20s \| 22.0%)	1:53.89 (+32.20s \| 22.0%)	1:50.09 (+36.00s \| 24.6%)	1:46.39 (+39.70s \| 27.2%)	1:48.89 (+37.20s \| 25.5%)	N/A

Long Course Distance

Event	Best Time	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	U.S Olympic Team Trials
Free 50 M	41.88	26.29 (+15.59s \| 37.2%)	30.19 (+11.69s \| 27.9%)	27.89 (+13.99s \| 33.4%)	26.79 (+15.09s \| 36.0%)	25.89 (+15.99s \| 38.2%)	24.59 (+17.29s \| 41.3%)	24.59 (+17.29s \| 41.3%)	24.29 (+17.59s \| 42.0%)	23.39 (+18.49s \| 44.1%)	23.79 (+18.09s \| 43.2%)	N/A	22.79 (+19.09s \| 45.6%)
Free 100 M	1:31.74	57.19 (+34.55s \| 37.7%)	1:07.39 (+24.35s \| 26.5%)	1:02.19 (+29.55s \| 32.2%)	59.19 (+32.55s \| 35.5%)	56.09 (+35.65s \| 38.9%)	53.59 (+38.15s \| 41.6%)	53.59 (+38.15s \| 41.6%)	52.59 (+39.15s \| 42.7%)	50.99 (+40.75s \| 44.4%)	51.99 (+39.75s \| 43.3%)	N/A	49.99 (+41.75s \| 45.5%)
Back 50 M	50.61	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 50 M	58.60	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 M	2:02.67	1:12.89 (+49.78s \| 40.6%)	1:25.49 (+37.18s \| 30.3%)	1:18.89 (+43.78s \| 35.7%)	1:13.79 (+48.88s \| 39.8%)	1:11.29 (+51.38s \| 41.9%)	1:08.19 (+54.48s \| 44.4%)	1:08.19 (+54.48s \| 44.4%)	1:06.59 (+56.08s \| 45.7%)	1:04.09 (+58.58s \| 47.8%)	1:05.29 (+57.38s \| 46.8%)	N/A	1:02.19 (+60.48s \| 49.3%)
Fly 50 M	50.52	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A

Progression

See how Bill Chang is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Bill's time to another swimmer's and even view their profile for more information about them.

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Meets

See all the meets Bill Chang has participated in and his achievement. The last event displayed is the most recent. For each event, you can find the Bill's time, the progress against Bill's best time, the corresponding time standard, as well as how much faster Bill needs to be to reach the next level.

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

Winter SC Age Group Championships

12/12/2025

San Ramon

50 Y Breast

28.77

-1.91s (New PB)

100 Y Free

52.01

-0.04s (New PB)

AAA: 51.09 (+0.92s | 1.8%)

50 Free

24.96

100 Free

27.05

52.01

100 Free

52.01

50 Y Fly

26.70

-1.48s (New PB)

100 Y Breast

1:04.71

-1.11s (New PB)

AAA: 1:03.29 (+1.42s | 2.2%)

50 Breast

29.97

100 Breast

34.74

1:04.71

100 Breast

1:04.71

50 Y Free

23.55

-0.01s (New PB)

AAA: 23.49 (+0.06s | 0.3%)

GGST Spooktacular 2025

10/25/2025

Morgan Hill

50 Y Free

23.56

-1.26s (New PB)

AAA: 23.49 (+0.07s | 0.3%)

QSS Santa Cruz Competenicia C B A+

10/11/2025

Watsonville

100 Y Breast

1:05.82

-3.31s (New PB)

AAA: 1:03.29 (+2.53s | 3.8%)

100 Y Free

52.05

-1.34s (New PB)

AAA: 51.09 (+0.96s | 1.8%)

2025 DACA SC CBA Meet

07/19/2025

Saratoga

100 Y Free

53.39

-1.81s (New PB)

AAA: 51.09 (+2.30s | 4.3%)

50 Y Fly

28.18

-3.43s (New PB)

50 Y Breast

30.68

-16.79s (New PB)

2024 Pacific Swimming Winter Age Group Champs

12/06/2024

Morgan Hill

100 Y Free

55.45

+0.25s

AA: 53.39 (+2.06s | 3.7%)

50 Free

26.40

100 Free

29.05

55.45

100 Free

55.45

100 Y Breast

1:12.09

+2.96s

A: 1:08.99 (+3.10s | 4.3%)

50 Breast

33.71

100 Breast

38.38

1:12.09

100 Breast

1:12.09

50 Y Free

24.87

+0.05s

AA: 24.59 (+0.28s | 1.1%)

MBSC GSMY Z1S Race To AGC C B A+

11/15/2024

Morgan Hill

100 Y Breast

1:09.16

+0.03s

A: 1:08.99 (+0.17s | 0.2%)

100 Y Free

55.20

-0.34s (New PB)

AA: 53.39 (+1.81s | 3.3%)

100 Y Fly

1:06.52

+1.61s

BB: 1:05.49 (+1.03s | 1.5%)

200 Y IM

2:26.09

-12.14s (New PB)

A: 2:15.39 (+10.70s | 7.3%)

GGST Spooktacular

10/25/2024

Morgan Hill

100 Y Fly

1:04.91

-2.27s (New PB)

A: 1:00.39 (+4.52s | 7.0%)

100 Y Free

55.64

+0.10s

AA: 53.39 (+2.25s | 4.0%)

100 Y Breast

1:09.13

-1.82s (New PB)

A: 1:08.99 (+0.14s | 0.2%)

50 Y Free

24.82

-0.34s (New PB)

AA: 24.59 (+0.23s | 0.9%)

SCSC Pacific Swimming Short Cours C B A+ Meet

10/04/2024

Morgan Hill

100 Y Free

57.77

+2.23s

A: 55.69 (+2.08s | 3.6%)

100 Y Breast

1:13.88

+2.93s

A: 1:08.99 (+4.89s | 6.6%)

50 Y Free

25.16

-0.23s (New PB)

AA: 24.59 (+0.57s | 2.3%)

100 Y Fly

1:07.18

-3.85s (New PB)

BB: 1:05.49 (+1.69s | 2.5%)

South San Francisco C B A+

09/21/2024

Pacifica

100 Y Breast

1:10.95

-10.09s (New PB)

A: 1:08.99 (+1.96s | 2.8%)

100 Y Free

55.54

-6.31s (New PB)

AA: 53.39 (+2.15s | 3.9%)

50 Y Free

25.39

-2.90s (New PB)

AA: 24.59 (+0.80s | 3.2%)

100 Y Fly

1:11.03

-0.42s (New PB)

B: 1:10.49 (+0.54s | 0.8%)

DACA SC CBA+

02/04/2023

Saratoga

100 Y IM

1:12.96

+2.01s

A: 1:09.99 (+2.97s | 4.1%)

100 Y Fly

1:11.45

-25.72s (New PB)

A: 1:09.29 (+2.16s | 3.0%)

100 Y Free

1:01.85

-17.36s (New PB)

A: 1:01.29 (+0.56s | 0.9%)

100 Y Breast

1:21.04

-21.93s (New PB)

A: 1:18.39 (+2.65s | 3.3%)

200 Y IM

2:38.23

-33.14s (New PB)

A: 2:32.29 (+5.94s | 3.8%)

2022 Winter Age Group Junior Championships

12/02/2022

Santa Clara

100 Y IM

1:10.95

-2.01s (New PB)

A: 1:09.99 (+0.96s | 1.4%)

50 IM

33.61

100 IM

37.34

1:10.95

100 IM

1:10.95

50 Y Fly

31.61

-1.56s (New PB)

A: 31.19 (+0.42s | 1.3%)

50 Y Free

28.72

+0.43s

A: 28.09 (+0.63s | 2.2%)

2022 10 DACA SC CBA+

10/01/2022

Saratoga

50 Y Free

28.29

-7.25s (New PB)

A: 28.09 (+0.20s | 0.7%)

100 Y IM

1:12.96

-14.33s (New PB)

A: 1:09.99 (+2.97s | 4.1%)

50 Y Fly

33.17

-6.88s (New PB)

A: 31.19 (+1.98s | 6.0%)

500 Y Free

6:17.91

-71.61s (New PB)

A: 5:59.99 (+17.92s | 4.7%)

PACIFIC SWIMMING SHORT COURSE C B A+ MEET

02/15/2020

San Jose

100 Y IM

1:35.91

+8.62s

BB: 1:29.69 (+6.22s | 6.5%)

50 Y Free

36.10

+0.56s

BB: 34.59 (+1.51s | 4.2%)

100 Y Breast

1:45.19

+2.22s

BB: 1:42.29 (+2.90s | 2.8%)

200 Y Free

2:51.90

-8.94s (New PB)

BB: 2:50.59 (+1.31s | 0.8%)

Brian Malick Memorial Zone 1S Championships

01/31/2020

MORGAN HILL

200 Y IM

3:11.73

+0.36s

A: 2:53.49 (+18.24s | 9.5%)

SBA C B A+

01/11/2020

Hollister

200 Y Free

3:00.84

BB: 2:50.59 (+10.25s | 5.7%)

100 Y Breast

1:42.97

-4.36s (New PB)

BB: 1:42.29 (+0.68s | 0.7%)

500 Y Free

7:29.52

-13.13s (New PB)

A: 6:43.39 (+46.13s | 10.3%)

50 Y Back

43.91

+2.35s

BB: 42.89 (+1.02s | 2.3%)

100 Y IM

1:32.40

+5.11s

BB: 1:29.69 (+2.71s | 2.9%)

50 Y Fly

40.90

+0.85s

A: 35.99 (+4.91s | 12.0%)

Zone 1S JO Minus Meet

12/13/2019

MORGAN HILL

100 Y IM

1:28.68

+1.39s

A: 1:19.69 (+8.99s | 10.1%)

500 Y Free

7:42.65

BB: 7:33.79 (+8.86s | 1.9%)

50 Y Free

37.36

+1.82s

BB: 34.59 (+2.77s | 7.4%)

100 Y Free

1:20.60

+1.39s

BB: 1:18.89 (+1.71s | 2.1%)

50 Y Fly

41.33

+1.28s

BB: 41.29 (+0.04s | 0.1%)

50 Y Breast

48.24

+0.77s

BB: 47.69 (+0.55s | 1.1%)

MBSC Montery Bay Swim Club Race To SC JOs

11/15/2019

Salinas

50 Y Free

35.54

-0.41s (New PB)

BB: 34.59 (+0.95s | 2.7%)

50 Y Back

41.56

-1.94s (New PB)

A: 37.59 (+3.97s | 9.6%)

100 Y Free

1:21.07

+1.86s

BB: 1:18.89 (+2.18s | 2.7%)

200 Y IM

3:11.37

A: 2:53.49 (+17.88s | 9.3%)

100 Y IM

1:32.20

+4.91s

BB: 1:29.69 (+2.51s | 2.7%)

100 Y Breast

1:47.33

-2.87s (New PB)

BB: 1:42.29 (+5.04s | 4.7%)

50 Y Breast

51.94

+4.47s

BB: 47.69 (+4.25s | 8.2%)

100 Y Fly

1:37.17

A: 1:24.39 (+12.78s | 13.2%)

SCSC Spooktacular C/B/A+ Meet

10/25/2019

MORGAN HILL

50 Y Breast

48.13

+0.66s

BB: 47.69 (+0.44s | 0.9%)

100 Y IM

1:27.29

-2.65s (New PB)

A: 1:19.69 (+7.60s | 8.7%)

100 Y Free

1:19.69

+0.48s

BB: 1:18.89 (+0.80s | 1.0%)

50 Y Fly

40.05

-0.96s (New PB)

A: 35.99 (+4.06s | 10.1%)

50 Y Back

44.73

+1.23s

BB: 42.89 (+1.84s | 4.1%)

50 Y Free

36.58

+0.63s

BB: 34.59 (+1.99s | 5.4%)

Gilroy Gators Swim Team C/B/A+ Meet

10/05/2019

MORGAN HILL

50 Y Back

43.50

-3.63s (New PB)

BB: 42.89 (+0.61s | 1.4%)

100 Y IM

1:29.94

-4.07s (New PB)

BB: 1:29.69 (+0.25s | 0.3%)

50 Y Fly

41.49

+0.48s

BB: 41.29 (+0.20s | 0.5%)

50 Y Free

35.95

-1.63s (New PB)

BB: 34.59 (+1.36s | 3.8%)

50 Y Breast

47.47

-4.27s (New PB)

A: 42.09 (+5.38s | 11.3%)

100 Y Free

1:19.21

-6.64s (New PB)

BB: 1:18.89 (+0.32s | 0.4%)

2019 Valley Splash Race To JOs

06/21/2019

San Jose

100 M Free

1:31.74

-2.29s (New PB)

BB: 1:30.59 (+1.15s | 1.3%)

50 M Free

42.17

+0.29s

BB: 39.79 (+2.38s | 5.6%)

50 M Back

52.59

+1.98s

BB: 49.29 (+3.30s | 6.3%)

100 M Breast

2:02.67

BB: 1:59.19 (+3.48s | 2.8%)

Santa Clara Swim Club - South Bay C/B/A+ Meet

05/17/2019

MORGAN HILL

50 M Breast

1:03.09

+4.49s

B: 1:00.89 (+2.20s | 3.5%)

50 M Free

43.27

+1.39s

BB: 39.79 (+3.48s | 8.0%)

Gilroy Gators Swim Team C/B/A+ Meet

05/04/2019

MORGAN HILL

50 M Free

41.88

BB: 39.79 (+2.09s | 5.0%)

50 M Fly

50.52

BB: 46.39 (+4.13s | 8.2%)

50 M Back

50.61

BB: 49.29 (+1.32s | 2.6%)

100 M Free

1:34.03

BB: 1:30.59 (+3.44s | 3.7%)

50 M Breast

58.60

BB: 54.39 (+4.21s | 7.2%)

2019 Pacific Swimming 10 Under Championship

04/20/2019

Sunnyvale

50 Y Breast

53.02

+1.28s

BB: 47.69 (+5.33s | 10.1%)

50 Y Free

37.58

-1.05s (New PB)

BB: 34.59 (+2.99s | 8.0%)

50 Y Fly

41.01

-4.64s (New PB)

A: 35.99 (+5.02s | 12.2%)

100 Y IM

1:38.91

+4.90s

BB: 1:29.69 (+9.22s | 9.3%)

Santa Cruz Swimming C/B/A+ Meet

03/23/2019

APTOS

50 Y Free

38.63

-0.18s (New PB)

B: 38.19 (+0.44s | 1.1%)

50 Y Breast

53.05

+1.31s

BB: 47.69 (+5.36s | 10.1%)

100 Y Free

1:25.85

-5.12s (New PB)

BB: 1:18.89 (+6.96s | 8.1%)

100 Y Breast

1:50.20

BB: 1:42.29 (+7.91s | 7.2%)

100 Y IM

1:34.01

-6.33s (New PB)

BB: 1:29.69 (+4.32s | 4.6%)

50 Y Back

47.13

BB: 42.89 (+4.24s | 9.0%)

2019 Pacific Swimming Zone All Star Meet

03/03/2019

Sunnyvale

25 Y Breast

23.72

-2.00s (New PB)

25 Y Fly

19.44

-0.22s (New PB)

25 Y Free

16.53

-1.19s (New PB)

Z1S Brian Malick Zone Championships

02/08/2019

MORGAN HILL

25 Y Fly

19.66

-0.90s (New PB)

25 Y Breast

25.72

100 Y IM

1:41.51

+1.17s

B: 1:39.69 (+1.82s | 1.8%)

50 Y Free

38.81

-0.90s (New PB)

B: 38.19 (+0.62s | 1.6%)

25 Y Back

21.93

25 Y Free

17.72

Gilroy Gators Swim Team C/B/A+ Meet

01/18/2019

MORGAN HILL

50 Y Free

39.71

B: 38.19 (+1.52s | 3.8%)

100 Y IM

1:40.34

B: 1:39.69 (+0.65s | 0.6%)

100 Y Free

1:30.97

B: 1:27.99 (+2.98s | 3.3%)

50 Y Breast

51.74

BB: 47.69 (+4.05s | 7.8%)

25 Y Fly

20.56

50 Y Fly

45.65

BB: 41.29 (+4.36s | 9.6%)

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