Koki Yamamoto

Age: 16 years old
Age Category: 15-16
Team: Dads Club Swim Team | Gulf Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Gulf Swimming

Dads Club Swim Team

Free 50 Y

24.49

02/28/2025

A: 24.19 (+0.30s | 1.2%)

163

Free 100 Y

54.00

12/05/2024

A: 53.19 (+0.81s | 1.5%)

194

50 Free

26.32

100 Free

27.68

54.00

100 Free

54.00

Free 200 Y

1:53.69

01/10/2025

AA: 1:51.79 (+1.90s | 1.7%)

50 Free

26.58

100 Free

28.44

55.02

100 Free

55.02

150 Free

29.40

1:24.42

200 Free

29.27

1:53.69

100 Free

58.67

Free 500 Y

5:07.18

12/05/2024

AA: 5:02.69 (+4.49s | 1.5%)

50 Free

28.01

100 Free

30.61

58.62

100 Free

58.62

150 Free

30.64

1:29.26

200 Free

31.20

2:00.46

100 Free

1:01.84

250 Free

31.51

2:31.97

300 Free

31.40

3:03.37

100 Free

1:02.91

350 Free

31.34

3:34.71

400 Free

30.98

4:05.69

100 Free

1:02.32

450 Free

31.37

4:37.06

500 Free

30.12

5:07.18

100 Free

1:01.49

Back 100 Y

1:03.47

11/02/2024

BB: 1:02.69 (+0.78s | 1.2%)

175

50 Back

31.50

100 Back

31.97

1:03.47

100 Back

1:03.47

Breast 100 Y

59.84

12/05/2024

AAA

AAAA: 57.69 (+2.15s | 3.6%)

50 Breast

28.47

100 Breast

31.37

59.84

100 Breast

59.84

Breast 200 Y

2:12.89

02/28/2025

AAA: 2:11.29 (+1.60s | 1.2%)

50 Breast

29.98

100 Breast

33.38

1:03.36

100 Breast

1:03.36

150 Breast

35.41

1:38.77

200 Breast

34.12

2:12.89

100 Breast

1:09.53

Fly 100 Y

55.59

02/28/2025

AA: 55.19 (+0.40s | 0.7%)

50 Fly

26.44

100 Fly

29.15

55.59

100 Fly

55.59

IM 200 Y

2:01.38

02/28/2025

AAA: 1:58.59 (+2.79s | 2.3%)

50 Fly

26.51

100 Back

32.46

58.97

100 IM

58.97

150 Breast

33.39

1:32.36

200 Free

29.02

2:01.38

100 IM

1:02.41

IM 400 Y

4:16.82

02/28/2025

AAA: 4:13.19 (+3.63s | 1.4%)

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Gulf Swimming

Dads Club Swim Team

Breast 100 M

1:07.60

07/10/2025

AAA

AAAA: 1:07.09 (+0.51s | 0.8%)

50 Breast

32.47

100 Breast

35.13

1:07.60

100 Breast

1:07.60

Breast 200 M

2:29.55

07/10/2025

AAA

AAAA: 2:25.89 (+3.66s | 2.4%)

50 Breast

34.30

100 Breast

38.28

1:12.58

100 Breast

1:12.58

150 Breast

38.51

1:51.09

200 Breast

38.46

2:29.55

100 Breast

1:16.97

Fly 200 M

2:14.29

07/10/2025

AAA

AAAA: 2:08.79 (+5.50s | 4.1%)

50 Fly

30.58

100 Fly

33.89

1:04.47

100 Fly

1:04.47

150 Fly

35.14

1:39.61

200 Fly

34.68

2:14.29

100 Fly

1:09.82

IM 400 M

4:52.84

07/10/2025

AAA

AAAA: 4:41.09 (+11.75s | 4.0%)

50 Fly

30.43

100 Fly

34.76

1:05.19

100 Fly

1:05.19

150 Back

40.39

1:45.58

200 Back

39.31

2:24.89

100 Back

1:19.70

250 Breast

41.00

3:05.89

300 Breast

41.26

3:47.15

100 Breast

1:22.26

350 Free

33.65

4:20.80

400 Free

32.04

4:52.84

100 Free

1:05.69

Above are the fastest times that Koki Yamamoto has achieved in his swimming career. For each event, you can find Koki's best time, the corresponding time standard, as well as how much faster Koki needs to be to reach the next level. The last columns provide Koki rankings at the team and LSC levels. These rankings are based on the Koki'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	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 Y	24.49	22.19 (+2.30s \| 9.4%)	21.29 (+3.20s \| 13.1%)	21.29 (+3.20s \| 13.1%)	20.59 (+3.90s \| 15.9%)	20.09 (+4.40s \| 18.0%)	20.39 (+4.10s \| 16.7%)
Free 100 Y	54.00	48.19 (+5.81s \| 10.8%)	46.39 (+7.61s \| 14.1%)	46.39 (+7.61s \| 14.1%)	45.09 (+8.91s \| 16.5%)	43.49 (+10.51s \| 19.5%)	44.39 (+9.61s \| 17.8%)
Free 200 Y	1:53.69	1:45.79 (+7.90s \| 6.9%)	1:41.59 (+12.10s \| 10.6%)	1:41.59 (+12.10s \| 10.6%)	1:38.79 (+14.90s \| 13.1%)	1:36.49 (+17.20s \| 15.1%)	1:38.09 (+15.60s \| 13.7%)
Free 500 Y	5:07.18	4:47.79 (+19.39s \| 6.3%)	4:37.09 (+30.09s \| 9.8%)	4:37.09 (+30.09s \| 9.8%)	4:29.49 (+37.69s \| 12.3%)	4:22.09 (+45.09s \| 14.7%)	4:27.69 (+39.49s \| 12.9%)
Back 100 Y	1:03.47	53.89 (+9.58s \| 15.1%)	51.49 (+11.98s \| 18.9%)	51.49 (+11.98s \| 18.9%)	49.39 (+14.08s \| 22.2%)	47.59 (+15.88s \| 25.0%)	48.89 (+14.58s \| 23.0%)
Breast 100 Y	59.84	1:00.89	57.99 (+1.85s \| 3.1%)	57.99 (+1.85s \| 3.1%)	55.89 (+3.95s \| 6.6%)	54.19 (+5.65s \| 9.4%)	55.29 (+4.55s \| 7.6%)
Breast 200 Y	2:12.89	2:13.29	2:07.99 (+4.90s \| 3.7%)	2:07.99 (+4.90s \| 3.7%)	2:02.29 (+10.60s \| 8.0%)	1:58.79 (+14.10s \| 10.6%)	2:00.99 (+11.90s \| 9.0%)
Fly 100 Y	55.59	52.89 (+2.70s \| 4.9%)	50.59 (+5.00s \| 9.0%)	50.59 (+5.00s \| 9.0%)	48.99 (+6.60s \| 11.9%)	47.79 (+7.80s \| 14.0%)	48.39 (+7.20s \| 13.0%)
IM 200 Y	2:01.38	1:58.19 (+3.19s \| 2.6%)	1:53.89 (+7.49s \| 6.2%)	1:53.89 (+7.49s \| 6.2%)	1:50.09 (+11.29s \| 9.3%)	1:46.39 (+14.99s \| 12.3%)	1:48.89 (+12.49s \| 10.3%)
IM 400 Y	4:16.82	4:14.69 (+2.13s \| 0.8%)	4:06.99 (+9.83s \| 3.8%)	4:06.99 (+9.83s \| 3.8%)	3:57.59 (+19.23s \| 7.5%)	3:48.79 (+28.03s \| 10.9%)	3:52.69 (+24.13s \| 9.4%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Breast 100 M	1:07.60	1:11.29	1:08.19	1:08.19	1:06.59 (+1.01s \| 1.5%)	1:04.09 (+3.51s \| 5.2%)	1:05.29 (+2.31s \| 3.4%)
Breast 200 M	2:29.55	2:35.79	2:29.09 (+0.46s \| 0.3%)	2:29.09 (+0.46s \| 0.3%)	2:24.79 (+4.76s \| 3.2%)	2:19.69 (+9.86s \| 6.6%)	2:22.89 (+6.66s \| 4.5%)
Fly 200 M	2:14.29	2:15.89	2:10.19 (+4.10s \| 3.1%)	2:10.19 (+4.10s \| 3.1%)	2:06.39 (+7.90s \| 5.9%)	2:02.79 (+11.50s \| 8.6%)	2:05.09 (+9.20s \| 6.9%)
IM 400 M	4:52.84	4:55.09	4:42.39 (+10.45s \| 3.6%)	4:42.39 (+10.45s \| 3.6%)	4:35.89 (+16.95s \| 5.8%)	4:28.79 (+24.05s \| 8.2%)	4:33.09 (+19.75s \| 6.7%)

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2025 ST TXLA SZ LC Sectional Champs

07/10/2025

Austin

400 M IM

4:52.84

AAA

AAAA: 4:41.09 (+11.75s | 4.0%)

50 Fly

30.43

100 Fly

34.76

1:05.19

100 Fly

1:05.19

150 Back

40.39

1:45.58

200 Back

39.31

2:24.89

100 Back

1:19.70

250 Breast

41.00

3:05.89

300 Breast

41.26

3:47.15

100 Breast

1:22.26

350 Free

33.65

4:20.80

400 Free

32.04

4:52.84

100 Free

1:05.69

100 M Breast

1:07.60

AAA

AAAA: 1:07.09 (+0.51s | 0.8%)

50 Breast

32.47

100 Breast

35.13

1:07.60

100 Breast

1:07.60

200 M Breast

2:29.55

AAA

AAAA: 2:25.89 (+3.66s | 2.4%)

50 Breast

34.30

100 Breast

38.28

1:12.58

100 Breast

1:12.58

150 Breast

38.51

1:51.09

200 Breast

38.46

2:29.55

100 Breast

1:16.97

200 M Fly

2:14.29

AAA

AAAA: 2:08.79 (+5.50s | 4.1%)

50 Fly

30.58

100 Fly

33.89

1:04.47

100 Fly

1:04.47

150 Fly

35.14

1:39.61

200 Fly

34.68

2:14.29

100 Fly

1:09.82

2025 Gulf 13 Over Champs (TEST)

02/28/2025

Houston

50 Y Free

24.49

-0.55s (New PB)

A: 24.19 (+0.30s | 1.2%)

400 Y IM

4:16.82

-6.93s (New PB)

AAA: 4:13.19 (+3.63s | 1.4%)

100 Y Fly

55.59

-0.97s (New PB)

AA: 55.19 (+0.40s | 0.7%)

50 Fly

26.44

100 Fly

29.15

55.59

100 Fly

55.59

100 Y Breast

1:01.14

+1.30s

AAA: 1:00.39 (+0.75s | 1.2%)

50 Breast

29.71

100 Breast

31.43

1:01.14

100 Breast

1:01.14

200 Y Free

1:56.98

+3.29s

A: 1:56.59 (+0.39s | 0.3%)

50 Free

26.68

100 Free

29.45

56.13

100 Free

56.13

150 Free

30.37

1:26.50

200 Free

30.48

1:56.98

100 Free

1:00.85

200 Y Breast

2:12.89

-1.28s (New PB)

AAA: 2:11.29 (+1.60s | 1.2%)

50 Breast

29.98

100 Breast

33.38

1:03.36

100 Breast

1:03.36

150 Breast

35.41

1:38.77

200 Breast

34.12

2:12.89

100 Breast

1:09.53

200 Y IM

2:01.38

-2.60s (New PB)

AAA: 1:58.59 (+2.79s | 2.3%)

50 Fly

26.51

100 Back

32.46

58.97

100 IM

58.97

150 Breast

33.39

1:32.36

200 Free

29.02

2:01.38

100 IM

1:02.41

2025 Tracey Harper Santiago Memorial Meet

01/10/2025

Houston

200 Y Free

1:53.69

-4.15s (New PB)

AA: 1:51.79 (+1.90s | 1.7%)

50 Free

26.58

100 Free

28.44

55.02

100 Free

55.02

150 Free

29.40

1:24.42

200 Free

29.27

1:53.69

100 Free

58.67

50 Y Free

25.04

-0.26s (New PB)

A: 24.19 (+0.85s | 3.4%)

200 Y Breast

2:16.58

+2.41s

AAA: 2:11.29 (+5.29s | 3.9%)

50 Breast

30.66

100 Breast

34.43

1:05.09

100 Breast

1:05.09

150 Breast

35.53

1:40.62

200 Breast

35.96

2:16.58

100 Breast

1:11.49

2024 Gulf Southern Senior Championships

12/05/2024

Shenandoah

200 Y Breast

2:14.17

-10.88s (New PB)

AAA: 2:11.29 (+2.88s | 2.1%)

50 Breast

30.14

100 Breast

33.81

1:03.95

100 Breast

1:03.95

150 Breast

34.68

1:38.63

200 Breast

35.54

2:14.17

100 Breast

1:10.22

100 Y Fly

56.56

-1.07s (New PB)

AA: 55.19 (+1.37s | 2.4%)

50 Fly

26.82

100 Fly

29.74

56.56

100 Fly

56.56

200 Y IM

2:03.98

-5.63s (New PB)

AAA: 1:58.59 (+5.39s | 4.3%)

50 Fly

27.98

100 Back

33.38

1:01.36

100 IM

1:01.36

150 Breast

33.70

1:35.06

200 Free

28.92

2:03.98

100 IM

1:02.62

100 Y Free

54.00

-0.30s (New PB)

A: 53.19 (+0.81s | 1.5%)

50 Free

26.32

100 Free

27.68

54.00

100 Free

54.00

400 Y IM

4:23.75

-15.32s (New PB)

AAA: 4:13.19 (+10.56s | 4.0%)

50 Fly

28.04

100 Fly

30.88

58.92

100 Fly

58.92

150 Back

36.32

1:35.24

200 Back

34.92

2:10.16

100 Back

1:11.24

250 Breast

35.46

2:45.62

300 Breast

36.41

3:22.03

100 Breast

1:11.87

350 Free

31.51

3:53.54

400 Free

30.21

4:23.75

100 Free

1:01.72

500 Y Free

5:07.18

AA: 5:02.69 (+4.49s | 1.5%)

50 Free

28.01

100 Free

30.61

58.62

100 Free

58.62

150 Free

30.64

1:29.26

200 Free

31.20

2:00.46

100 Free

1:01.84

250 Free

31.51

2:31.97

300 Free

31.40

3:03.37

100 Free

1:02.91

350 Free

31.34

3:34.71

400 Free

30.98

4:05.69

100 Free

1:02.32

450 Free

31.37

4:37.06

500 Free

30.12

5:07.18

100 Free

1:01.49

100 Y Breast

59.84

-5.52s (New PB)

AAA

AAAA: 57.69 (+2.15s | 3.6%)

50 Breast

28.47

100 Breast

31.37

59.84

100 Breast

59.84

SSAN 2024 Fall Invite

11/02/2024

Spring

100 Y Free

54.30

-1.01s (New PB)

A: 53.19 (+1.11s | 2.0%)

50 Free

26.34

100 Free

27.96

54.30

100 Free

54.30

100 Y Back

1:03.47

BB: 1:02.69 (+0.78s | 1.2%)

50 Back

31.50

100 Back

31.97

1:03.47

100 Back

1:03.47

100 Y Breast

1:05.36

-0.36s (New PB)

AA: 1:03.19 (+2.17s | 3.3%)

50 Breast

31.25

100 Breast

34.11

1:05.36

100 Breast

1:05.36

200 Y Free

1:57.84

-2.89s (New PB)

A: 1:56.59 (+1.25s | 1.1%)

50 Free

39.70

100 Free

30.63

1:10.33

100 Free

1:10.33

150 Free

29.65

1:39.98

200 Free

17.86

1:57.84

100 Free

47.51

50 Y Free

25.30

-0.56s (New PB)

A: 24.19 (+1.11s | 4.4%)

200 Y IM

2:09.61

-0.39s (New PB)

A: 2:09.39 (+0.22s | 0.2%)

50 Fly

28.14

100 Back

34.22

1:02.36

100 IM

1:02.36

150 Breast

36.58

1:38.94

200 Free

30.67

2:09.61

100 IM

1:07.25

100 Y Fly

58.41

+0.78s

A: 57.59 (+0.82s | 1.4%)

50 Fly

27.88

100 Fly

30.53

58.41

100 Fly

58.41

200 Y Breast

2:25.05

-0.28s (New PB)

A: 2:23.19 (+1.86s | 1.3%)

50 Breast

33.07

100 Breast

36.82

1:09.89

100 Breast

1:09.89

150 Breast

37.61

1:47.50

200 Breast

37.55

2:25.05

100 Breast

1:15.16

2024 FCST Oct Tri Meet

10/18/2024

Houston

200 Y IM

2:10.00

A: 2:09.39 (+0.61s | 0.5%)

50 Fly

27.71

100 Back

35.94

1:03.65

100 IM

1:03.65

150 Breast

35.30

1:38.95

200 Free

31.05

2:10.00

100 IM

1:06.35

400 Y IM

4:39.07

A: 4:36.19 (+2.88s | 1.0%)

100 Y Free

55.31

A: 53.19 (+2.12s | 3.8%)

50 Free

26.91

100 Free

28.40

55.31

100 Free

55.31

200 Y Free

2:00.73

A: 1:56.59 (+4.14s | 3.4%)

50 Free

28.32

100 Free

30.62

58.94

100 Free

58.94

150 Free

31.04

1:29.98

200 Free

30.75

2:00.73

100 Free

1:01.79

100 Y Breast

1:05.72

AA: 1:03.19 (+2.53s | 3.8%)

50 Breast

30.98

100 Breast

34.74

1:05.72

100 Breast

1:05.72

200 Y Breast

2:25.33

A: 2:23.19 (+2.14s | 1.5%)

50 Breast

32.90

100 Breast

37.27

1:10.17

100 Breast

1:10.17

150 Breast

37.89

1:48.06

200 Breast

37.27

2:25.33

100 Breast

1:15.16

50 Y Free

25.86

A: 24.19 (+1.67s | 6.5%)

100 Y Fly

57.63

A: 57.59 (+0.04s | 0.1%)

50 Fly

27.65

100 Fly

29.98

57.63

100 Fly

57.63

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 Y	24.49	22.19 (+2.30s \| 9.4%)	21.29 (+3.20s \| 13.1%)	21.29 (+3.20s \| 13.1%)	20.59 (+3.90s \| 15.9%)	20.09 (+4.40s \| 18.0%)	20.39 (+4.10s \| 16.7%)
Free 100 Y	54.00	48.19 (+5.81s \| 10.8%)	46.39 (+7.61s \| 14.1%)	46.39 (+7.61s \| 14.1%)	45.09 (+8.91s \| 16.5%)	43.49 (+10.51s \| 19.5%)	44.39 (+9.61s \| 17.8%)
Free 200 Y	1:53.69	1:45.79 (+7.90s \| 6.9%)	1:41.59 (+12.10s \| 10.6%)	1:41.59 (+12.10s \| 10.6%)	1:38.79 (+14.90s \| 13.1%)	1:36.49 (+17.20s \| 15.1%)	1:38.09 (+15.60s \| 13.7%)
Free 500 Y	5:07.18	4:47.79 (+19.39s \| 6.3%)	4:37.09 (+30.09s \| 9.8%)	4:37.09 (+30.09s \| 9.8%)	4:29.49 (+37.69s \| 12.3%)	4:22.09 (+45.09s \| 14.7%)	4:27.69 (+39.49s \| 12.9%)
Back 100 Y	1:03.47	53.89 (+9.58s \| 15.1%)	51.49 (+11.98s \| 18.9%)	51.49 (+11.98s \| 18.9%)	49.39 (+14.08s \| 22.2%)	47.59 (+15.88s \| 25.0%)	48.89 (+14.58s \| 23.0%)
Breast 100 Y	59.84	1:00.89	57.99 (+1.85s \| 3.1%)	57.99 (+1.85s \| 3.1%)	55.89 (+3.95s \| 6.6%)	54.19 (+5.65s \| 9.4%)	55.29 (+4.55s \| 7.6%)
Breast 200 Y	2:12.89	2:13.29	2:07.99 (+4.90s \| 3.7%)	2:07.99 (+4.90s \| 3.7%)	2:02.29 (+10.60s \| 8.0%)	1:58.79 (+14.10s \| 10.6%)	2:00.99 (+11.90s \| 9.0%)
Fly 100 Y	55.59	52.89 (+2.70s \| 4.9%)	50.59 (+5.00s \| 9.0%)	50.59 (+5.00s \| 9.0%)	48.99 (+6.60s \| 11.9%)	47.79 (+7.80s \| 14.0%)	48.39 (+7.20s \| 13.0%)
IM 200 Y	2:01.38	1:58.19 (+3.19s \| 2.6%)	1:53.89 (+7.49s \| 6.2%)	1:53.89 (+7.49s \| 6.2%)	1:50.09 (+11.29s \| 9.3%)	1:46.39 (+14.99s \| 12.3%)	1:48.89 (+12.49s \| 10.3%)
IM 400 Y	4:16.82	4:14.69 (+2.13s \| 0.8%)	4:06.99 (+9.83s \| 3.8%)	4:06.99 (+9.83s \| 3.8%)	3:57.59 (+19.23s \| 7.5%)	3:48.79 (+28.03s \| 10.9%)	3:52.69 (+24.13s \| 9.4%)