Hajin Chang

Age: 10 years old
Age Category: 10 & under
Team: Jcc Waves | Southern California Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Southern California Swimming

Jcc Waves

Free 50 Y

33.43

9

12/13/2024

BB

A: 32.09 (+1.34s | 4.0%)

104

1

Free 100 Y

1:08.95

10

12/12/2025

A

AA: 1:08.29 (+0.66s | 1.0%)

48

1

50 Free

32.87

100 Free

36.08

1:08.95

100 Free

1:08.95

Back 50 Y

35.73

10

12/12/2025

AA

AAA: 34.39 (+1.34s | 3.8%)

28

1

Back 100 Y

1:18.77

10

03/13/2025

A

AA: 1:18.39 (+0.38s | 0.5%)

32

1

50 Back

38.51

100 Back

40.26

1:18.77

100 Back

1:18.77

Breast 50 Y

41.89

10

12/12/2025

A

AA: 40.89 (+1.00s | 2.4%)

47

1

Breast 100 Y

1:33.35

9

12/13/2024

A

AA: 1:29.09 (+4.26s | 4.6%)

64

1

50 Breast

45.19

100 Breast

48.16

1:33.35

100 Breast

1:33.35

IM 100 Y

1:19.16

10

12/12/2025

A

AA: 1:18.39 (+0.77s | 1.0%)

41

1

50 IM

36.17

100 IM

42.99

1:19.16

100 IM

1:19.16

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Southern California Swimming

Jcc Waves

Free 50 M

40.37

9

07/25/2024

BB

A: 36.59 (+3.78s | 9.4%)

67

1

Free 100 M

1:19.24

10

07/24/2025

A

AA: 1:18.19 (+1.05s | 1.3%)

24

1

50 Free

37.51

100 Free

41.73

1:19.24

100 Free

1:19.24

Back 50 M

40.21

10

07/24/2025

AA

AAA: 39.49 (+0.72s | 1.8%)

11

1

Breast 100 M

1:48.00

10

06/12/2025

A

AA: 1:43.29 (+4.71s | 4.4%)

43

1

50 Breast

51.68

100 Breast

56.32

1:48.00

100 Breast

1:48.00

Above are the fastest times that Hajin Chang has achieved in her swimming career. For each event, you can find Hajin's best time, the corresponding time standard, as well as how much faster Hajin needs to be to reach the next level. The last columns provide Hajin rankings at the team and LSC levels. These rankings are based on the Hajin's personal best, her 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	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 Y	33.43	24.89 (+8.54s \| 25.5%)	23.89 (+9.54s \| 28.5%)	23.89 (+9.54s \| 28.5%)	23.29 (+10.14s \| 30.3%)	22.59 (+10.84s \| 32.4%)	22.79 (+10.64s \| 31.8%)	30.89 (+2.54s \| 7.6%)
Free 100 Y	1:08.95	53.99 (+14.96s \| 21.7%)	51.89 (+17.06s \| 24.7%)	51.89 (+17.06s \| 24.7%)	50.39 (+18.56s \| 26.9%)	49.29 (+19.66s \| 28.5%)	49.69 (+19.26s \| 27.9%)	1:08.19 (+0.76s \| 1.1%)
Back 50 Y	35.73	N/A	N/A	N/A	N/A	N/A	N/A	36.49 33.69 (+2.04s \| 5.7%)
Back 100 Y	1:18.77	59.49 (+19.28s \| 24.5%)	57.09 (+21.68s \| 27.5%)	57.09 (+21.68s \| 27.5%)	55.09 (+23.68s \| 30.1%)	53.89 (+24.88s \| 31.6%)	54.49 (+24.28s \| 30.8%)	1:17.89 (+0.88s \| 1.1%)
Breast 50 Y	41.89	N/A	N/A	N/A	N/A	N/A	N/A	40.39 (+1.50s \| 3.6%)
Breast 100 Y	1:33.35	1:07.59 (+25.76s \| 27.6%)	1:05.49 (+27.86s \| 29.8%)	1:05.49 (+27.86s \| 29.8%)	1:03.09 (+30.26s \| 32.4%)	1:01.79 (+31.56s \| 33.8%)	1:02.79 (+30.56s \| 32.7%)	1:27.99 (+5.36s \| 5.7%)
IM 100 Y	1:19.16	N/A	N/A	N/A	N/A	N/A	N/A	1:17.69 (+1.47s \| 1.9%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 M	40.37	28.69 (+11.68s \| 28.9%)	27.39 (+12.98s \| 32.2%)	27.39 (+12.98s \| 32.2%)	26.89 (+13.48s \| 33.4%)	26.29 (+14.08s \| 34.9%)	26.59 (+13.78s \| 34.1%)	35.19 (+5.18s \| 12.8%)
Free 100 M	1:19.24	1:01.89 (+17.35s \| 21.9%)	59.29 (+19.95s \| 25.2%)	59.29 (+19.95s \| 25.2%)	58.19 (+21.05s \| 26.6%)	56.99 (+22.25s \| 28.1%)	57.59 (+21.65s \| 27.3%)	1:17.49 (+1.75s \| 2.2%)
Back 50 M	40.21	N/A	N/A	N/A	N/A	N/A	N/A	41.79 38.89 (+1.32s \| 3.3%)
Breast 100 M	1:48.00	1:18.79 (+29.21s \| 27.0%)	1:15.99 (+32.01s \| 29.6%)	1:15.99 (+32.01s \| 29.6%)	1:13.79 (+34.21s \| 31.7%)	1:12.19 (+35.81s \| 33.2%)	1:13.29 (+34.71s \| 32.1%)	1:41.49 (+6.51s \| 6.0%)

Progression

See how Hajin Chang is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Hajin'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 Hajin Chang has participated in and her achievement. The last event displayed is the most recent. For each event, you can find the Hajin's time, the progress against Hajin's best time, the corresponding time standard, as well as how much faster Hajin needs to be to reach the next level.

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2025 CA GWSC Winter Age Group Invitational

12/12/2025

Huntington Beach

50 Y Breast

41.89

-4.62s (New PB)

A

AA: 40.89 (+1.00s | 2.4%)

10

1

9

2

50 Y Back

35.73

-1.93s (New PB)

AA

AAA: 34.39 (+1.34s | 3.8%)

10

2

3

8

100 Y IM

1:19.16

-7.86s (New PB)

A

AA: 1:18.39 (+0.77s | 1.0%)

10

1

8

1

50 IM

36.17

100 IM

42.99

1:19.16

100 IM

1:19.16

100 Y Free

1:08.95

-4.95s (New PB)

A

AA: 1:08.29 (+0.66s | 1.0%)

10

1

8

7

50 Free

32.87

100 Free

36.08

1:08.95

100 Free

1:08.95

2025 CA SCS RAA Summer A G Champs

07/24/2025

Riverside

100 M Breast

1:48.52

+0.52s

BB

A: 1:48.39 (+0.13s | 0.1%)

10

50 Breast

51.43

100 Breast

57.09

1:48.52

100 Breast

1:48.52

50 M Back

40.21

-1.34s (New PB)

AA

AAA: 39.49 (+0.72s | 1.8%)

10

1

7

5

100 M Free

1:19.24

A

AA: 1:18.19 (+1.05s | 1.3%)

10

50 Free

37.51

100 Free

41.73

1:19.24

100 Free

1:19.24

2025 June Age Group Invite

06/12/2025

Irvine

50 M Back

42.66

+1.11s

A

AA: 41.59 (+1.07s | 2.5%)

10

100 M Breast

1:48.00

A

AA: 1:43.29 (+4.71s | 4.4%)

10

50 Breast

51.68

100 Breast

56.32

1:48.00

100 Breast

1:48.00

50 M Back

41.55

-0.71s (New PB)

AA

AAA: 39.49 (+2.06s | 5.0%)

10

1

4

1

2025 SCS Spring Age Group Champs @ Armada

03/13/2025

La Mirada

100 Y Back

1:18.77

-2.39s (New PB)

A

AA: 1:18.39 (+0.38s | 0.5%)

10

50 Back

38.51

100 Back

40.26

1:18.77

100 Back

1:18.77

100 Y Free

1:13.90

BB

A: 1:11.49 (+2.41s | 3.3%)

10

50 Free

35.34

100 Free

38.56

1:13.90

100 Free

1:13.90

2024 CA GWSC SCS WAG

12/13/2024

Huntington Beach

100 Y Breast

1:33.35

A

AA: 1:29.09 (+4.26s | 4.6%)

9

1

5

2

50 Breast

45.19

100 Breast

48.16

1:33.35

100 Breast

1:33.35

50 Y Back

37.66

A

AA: 36.19 (+1.47s | 3.9%)

9

3

2

3

50 Y Breast

46.51

BB

A: 42.79 (+3.72s | 8.0%)

9

2

5

9

100 Y Back

1:21.16

A

AA: 1:18.39 (+2.77s | 3.4%)

9

2

3

9

50 Back

39.42

100 Back

41.74

1:21.16

100 Back

1:21.16

50 Y Free

33.43

BB

A: 32.09 (+1.34s | 4.0%)

9

2

3

6

100 Y IM

1:27.02

BB

A: 1:22.09 (+4.93s | 5.7%)

9

2

4

50 IM

42.60

100 IM

44.42

1:27.02

100 IM

1:27.02

2024 CA SCS GWSC Summer A G Champs

07/25/2024

Mission Viejo/Huntin

50 M Back

42.26

A

AA: 41.59 (+0.67s | 1.6%)

9

1

3

9

50 M Free

40.37

BB

A: 36.59 (+3.78s | 9.4%)

9