Matthew Kosov

Age: 9 years old
Age Category: 10 & under
Team: Bay Club Aquatics | San Diego-Imperial Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Bay Club Aquatics

San Diego-Imperial Swimming

Western Zone

USA

Free 25 Y

16.39

09/20/2025

134

464

Free 50 Y

32.85

03/06/2026

A: 31.09 (+1.76s | 5.4%)

527

1,000+

Free 100 Y

1:15.08

Analysis

03/06/2026

A: 1:09.79 (+5.29s | 7.0%)

536

1,000+

50 Free

34.72

100 Free

40.36

1:15.08

100 Free

1:15.08

Free 200 Y

2:49.02

Analysis

03/06/2026

A: 2:31.59 (+17.43s | 10.3%)

483

1,000+

50 Free

38.02

100 Free

43.92

1:21.94

100 Free

1:21.94

150 Free

45.21

2:07.15

200 Free

41.87

2:49.02

100 Free

1:27.08

Back 50 Y

40.29

02/21/2026

A: 37.59 (+2.70s | 6.7%)

538

1,000+

Back 100 Y

1:31.67

Analysis

02/21/2026

BB: 1:30.09 (+1.58s | 1.7%)

661

1,000+

50 Back

44.06

100 Back

47.61

1:31.67

100 Back

1:31.67

Fly 25 Y

24.25

01/25/2025

634

1,000+

Fly 50 Y

36.45

03/06/2026

A: 35.99 (+0.46s | 1.3%)

274

897

Fly 100 Y

1:30.55

Analysis

03/06/2026

A: 1:24.39 (+6.16s | 6.8%)

331

1,000+

50 Fly

39.22

100 Fly

51.33

1:30.55

100 Fly

1:30.55

IM 100 Y

1:29.85

Analysis

02/21/2026

BB: 1:29.69 (+0.16s | 0.2%)

615

1,000+

50 IM

41.39

100 IM

48.46

1:29.85

100 IM

1:29.85

IM 200 Y

3:28.53

Analysis

01/10/2026

BB: 3:15.99 (+12.54s | 6.0%)

574

1,000+

Long course distance

Event	Time	Age	Date	Standard	Next Standard	Bay Club Aquatics	San Diego-Imperial Swimming	Western Zone	USA
Free 50 M	40.51	9	07/24/2025	B	BB: 39.79 (+0.72s \| 1.8%)	1	16	311	577

Back 50 M	52.84	9	07/11/2025	B	BB: 49.29 (+3.55s \| 6.7%)	1	22	524	988

Above are the fastest times that Matthew Kosov has achieved in his swimming career. For each event, you can find Matthew's best time, the corresponding time standard, as well as how much faster Matthew needs to be to reach the next level. The last columns provide Matthew rankings at the team and LSC levels. These rankings are based on the Matthew'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	SouthWestern Age Group Regional
Free 50 Y	32.85	22.19 (+10.66s \| 32.5%)	21.29 (+11.56s \| 35.2%)	21.29 (+11.56s \| 35.2%)	20.59 (+12.26s \| 37.3%)	20.09 (+12.76s \| 38.8%)	20.39 (+12.46s \| 37.9%)	30.49 (+2.36s \| 7.2%)
Free 100 Y	1:15.08	48.19 (+26.89s \| 35.8%)	46.39 (+28.69s \| 38.2%)	46.39 (+28.69s \| 38.2%)	45.09 (+29.99s \| 39.9%)	43.49 (+31.59s \| 42.1%)	44.39 (+30.69s \| 40.9%)	1:07.19 (+7.89s \| 10.5%)
Free 200 Y	2:49.02	1:45.79 (+63.23s \| 37.4%)	1:41.59 (+67.43s \| 39.9%)	1:41.59 (+67.43s \| 39.9%)	1:38.79 (+70.23s \| 41.6%)	1:36.49 (+72.53s \| 42.9%)	1:38.09 (+70.93s \| 42.0%)	2:24.99 (+24.03s \| 14.2%)
Back 50 Y	40.29	N/A	N/A	N/A	N/A	N/A	N/A	36.29 (+4.00s \| 9.9%)
Back 100 Y	1:31.67	53.89 (+37.78s \| 41.2%)	51.49 (+40.18s \| 43.8%)	51.49 (+40.18s \| 43.8%)	49.39 (+42.28s \| 46.1%)	47.59 (+44.08s \| 48.1%)	48.89 (+42.78s \| 46.7%)	1:16.59 (+15.08s \| 16.5%)
Fly 50 Y	36.45	N/A	N/A	N/A	N/A	N/A	N/A	34.69 (+1.76s \| 4.8%)
Fly 100 Y	1:30.55	52.89 (+37.66s \| 41.6%)	50.59 (+39.96s \| 44.1%)	50.59 (+39.96s \| 44.1%)	48.99 (+41.56s \| 45.9%)	47.79 (+42.76s \| 47.2%)	48.39 (+42.16s \| 46.6%)	1:19.89 (+10.66s \| 11.8%)
IM 100 Y	1:29.85	N/A	N/A	N/A	N/A	N/A	N/A	1:16.99 (+12.86s \| 14.3%)
IM 200 Y	3:28.53	1:58.19 (+90.34s \| 43.3%)	1:53.89 (+94.64s \| 45.4%)	1:53.89 (+94.64s \| 45.4%)	1:50.09 (+98.44s \| 47.2%)	1:46.39 (+102.14s \| 49.0%)	1:48.89 (+99.64s \| 47.8%)	2:46.19 (+42.34s \| 20.3%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 M	40.51	25.89 (+14.62s \| 36.1%)	24.59 (+15.92s \| 39.3%)	24.59 (+15.92s \| 39.3%)	24.29 (+16.22s \| 40.0%)	23.39 (+17.12s \| 42.3%)	23.79 (+16.72s \| 41.3%)	34.59 (+5.92s \| 14.6%)
Back 50 M	52.84	N/A	N/A	N/A	N/A	N/A	N/A	41.59 (+11.25s \| 21.3%)

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 SI 14U AGE GRP CHAMPIONSHIPS

03/06/2026

El Cajon

50 Y Back

41.09

+0.80s

A: 37.59 (+3.50s | 8.5%)

100 Y Free

1:15.08

-1.11s (New PB)

A: 1:09.79 (+5.29s | 7.0%)

50 Free

34.72

100 Free

40.36

1:15.08

100 Free

1:15.08

50 Y Free

32.85

-0.82s (New PB)

A: 31.09 (+1.76s | 5.4%)

100 Y Fly

1:30.55

-11.07s (New PB)

A: 1:24.39 (+6.16s | 6.8%)

50 Fly

39.22

100 Fly

51.33

1:30.55

100 Fly

1:30.55

50 Y Fly

36.45

-2.78s (New PB)

A: 35.99 (+0.46s | 1.3%)

200 Y Free

2:49.02

-13.41s (New PB)

A: 2:31.59 (+17.43s | 10.3%)

50 Free

38.02

100 Free

43.92

1:21.94

100 Free

1:21.94

150 Free

45.21

2:07.15

200 Free

41.87

2:49.02

100 Free

1:27.08

2026 SI JBST Age Group Champs Max

02/21/2026

La Jolla

100 Y Back

1:31.67

BB: 1:30.09 (+1.58s | 1.7%)

50 Back

44.06

100 Back

47.61

1:31.67

100 Back

1:31.67

50 Y Back

40.29

-4.32s (New PB)

A: 37.59 (+2.70s | 6.7%)

100 Y Free

1:16.19

-3.72s (New PB)

A: 1:09.79 (+6.40s | 8.4%)

50 Free

36.01

100 Free

40.18

1:16.19

100 Free

1:16.19

100 Y IM

1:29.85

BB: 1:29.69 (+0.16s | 0.2%)

50 IM

41.39

100 IM

48.46

1:29.85

100 IM

1:29.85

2026 SI BAY 14U Rising Stars 3

01/10/2026

Rancho Santa Fe

200 Y Free

3:02.43

BB: 2:50.59 (+11.84s | 6.5%)

200 Y IM

3:28.53

BB: 3:15.99 (+12.54s | 6.0%)

2025 SI Winter Age Group Championships

12/19/2025

Oceanside

50 Y Fly

39.23

-0.78s (New PB)

A: 35.99 (+3.24s | 8.3%)

50 Y Free

33.67

-0.97s (New PB)

A: 31.09 (+2.58s | 7.7%)

SI 2025 RSD All Ages WAG Max

12/05/2025

Solana Beach

100 Y Free

1:20.54

+0.63s

BB: 1:18.89 (+1.65s | 2.0%)

50 Free

37.94

100 Free

42.60

1:20.54

100 Free

1:20.54

100 Y Fly

1:41.62

BB: 1:38.99 (+2.63s | 2.6%)

50 Fly

42.42

100 Fly

59.20

1:41.62

100 Fly

1:41.62

50 Y Fly

40.01

-1.12s (New PB)

A: 35.99 (+4.02s | 10.0%)

50 Y Back

44.61

-5.78s (New PB)

BB: 42.89 (+1.72s | 3.9%)

50 Y Free

34.64

-0.05s (New PB)

BB: 34.59 (+0.05s | 0.1%)

2025 CA MVN Turkey Classic

11/21/2025

Mission Viejo

50 Y Fly

41.13

A: 35.99 (+5.14s | 12.5%)

100 Y Free

1:23.79

+3.88s

BB: 1:18.89 (+4.90s | 5.8%)

50 Free

39.29

100 Free

44.50

1:23.79

100 Free

1:23.79

50 Y Free

35.01

+0.32s

BB: 34.59 (+0.42s | 1.2%)

2025 SI PS Freestyle Festival Sat

09/20/2025

Poway

100 Y Free

1:19.91

BB: 1:18.89 (+1.02s | 1.3%)

50 Free

36.64

100 Free

43.27

1:19.91

100 Free

1:19.91

50 Y Free

34.69

-8.87s (New PB)

BB: 34.59 (+0.10s | 0.3%)

25 Y Free

16.39

2025 SI LC AG CHAMPS

07/24/2025

Coronado

50 M Free

40.51

-1.41s (New PB)

BB: 39.79 (+0.72s | 1.8%)

2025 SI JBST All Ages NTS Meet

07/11/2025

La Jolla

50 M Back

52.84

BB: 49.29 (+3.55s | 6.7%)

50 M Free

41.92

BB: 39.79 (+2.13s | 5.1%)

2024 SI BAY 10U Mini Meet

01/25/2025

Rancho Santa Fe

50 Y Free

43.56

B: 38.19 (+5.37s | 12.3%)

25 Y Fly

24.25

50 Y Back

50.39

B: 48.29 (+2.10s | 4.2%)

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.