Above are the fastest times that Tatsumasa Sekine has achieved in his
swimming career.
For each event, you can find Tatsumasa's best time, the corresponding time
standard, as well as how much faster Tatsumasa needs to be to reach the next level.
The last columns provide Tatsumasa rankings at the team and LSC levels. These rankings are
based on the Tatsumasa'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.
See how Tatsumasa Sekine is improving gradually by choosing the distance and
the stroke you are interested in.
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See all the meets Tatsumasa Sekine has participated in and his
achievement. The last event displayed is the most recent.
For each event, you can find the Tatsumasa's time, the progress against
Tatsumasa's best time, the corresponding time
standard, as well as how much faster Tatsumasa needs to be to reach the next level.
Event
Time
Progress
Standard
Next Standard
Age
Heat
Lane
Ranking
SCSC Go The Distance Block Party
11/01/2025
Sunnyvale
500 Y Free
7:24.89
BB
A: 6:43.39 (+41.50s | 9.3%)
8
6
3
GGST Spooktacular 2025
10/25/2025
Morgan Hill
50 Y Fly
34.10
-1.04s
(New PB)
AA
AAA: 32.59 (+1.51s | 4.4%)
8
1
6
1
25 Y Back
18.54
-5.67s
(New PB)
8
1
3
1
50 Y Breast
47.33
+0.22s
BB
A: 42.09 (+5.24s | 11.1%)
8
3
4
4
50 Y Free
34.25
+0.18s
BB
A: 31.09 (+3.16s | 9.2%)
8
1
3
3
50 Y Back
39.73
-0.67s
(New PB)
BB
A: 37.59 (+2.14s | 5.4%)
8
2
4
4
100 Y IM
1:25.49
-2.16s
(New PB)
BB
A: 1:19.69 (+5.80s | 6.8%)
8
2
5
3
QSS Santa Cruz Competenicia C B A+
10/11/2025
Watsonville
25 Y Free
16.25
-3.11s
(New PB)
8
1
2
1
50 Y Back
40.40
-0.79s
(New PB)
BB
A: 37.59 (+2.81s | 7.0%)
8
1
6
2
25 Y Breast
23.54
-1.22s
(New PB)
8
1
2
4
100 Y IM
1:27.65
-0.98s
(New PB)
BB
A: 1:19.69 (+7.96s | 9.1%)
8
1
5
2
2025 MAC Season Kick Off
09/27/2025
Milpitas
50 Y Fly
35.14
-2.55s
(New PB)
A
AA: 34.29 (+0.85s | 2.4%)
8
4
6
3
100 Y Breast
1:44.45
B
BB: 1:42.29 (+2.16s | 2.1%)
8
2
1
5
50 Y Back
41.19
-2.23s
(New PB)
BB
A: 37.59 (+3.60s | 8.7%)
8
3
8
3
100 Y Free
1:15.15
BB
A: 1:09.79 (+5.36s | 7.1%)
8
1
1
3
50 Y Free
34.07
-4.40s
(New PB)
BB
A: 31.09 (+2.98s | 8.7%)
8
7
8
3
50 Y Breast
47.11
-4.60s
(New PB)
BB
A: 42.09 (+5.02s | 10.7%)
8
1
7
3
2025 Long Course Far Western Championship
07/31/2025
Morgan Hill
100 M Fly
1:36.28
+6.64s
BB
A: 1:36.19 (+0.09s | 0.1%)
8
50 M Fly
41.29
+1.79s
BB
A: 40.59 (+0.70s | 1.7%)
8
2025 Age Group Championships
07/11/2025
Santa Rosa
50 M Fly
39.59
+0.09s
A
AA: 38.59 (+1.00s | 2.5%)
8
100 M Fly
1:29.64
-0.25s
(New PB)
AA
AAA: 1:25.09 (+4.55s | 5.1%)
8
Valley Splash
06/27/2025
San Jose
50 M Back
47.84
+3.53s
BB
A: 43.09 (+4.75s | 9.9%)
8
1
8
4
50 M Breast
53.42
-2.59s
(New PB)
BB
A: 47.89 (+5.53s | 10.4%)
8
2
5
3
100 M Free
1:31.52
B
BB: 1:30.59 (+0.93s | 1.0%)
8
6
6
5
100 M Fly
1:29.89
AA
AAA: 1:25.09 (+4.80s | 5.3%)
8
2
5
1
50 M Free
41.51
+1.54s
B
BB: 39.79 (+1.72s | 4.1%)
8
1
1
4
50 M Fly
40.78
+1.28s
BB
A: 40.59 (+0.19s | 0.5%)
8
1
2
1
SCSC Blue Gold Block Party Meet June
06/14/2025
San Jose
50 Y Back
44.44
+1.02s
B
BB: 42.89 (+1.55s | 3.5%)
8
2
7
8
100 Y Fly
1:22.70
A
AA: 1:19.49 (+3.21s | 3.9%)
8
3
7
6
100 Y IM
1:28.63
-9.59s
(New PB)
BB
A: 1:19.69 (+8.94s | 10.1%)
8
2
1
8
SCSC Pacific Swimming Long Course Intrasquad
05/30/2025
Morgan Hill
50 M Free
39.97
-0.68s
(New PB)
B
BB: 39.79 (+0.18s | 0.5%)
8
3
7
2
50 M Fly
39.50
-0.70s
(New PB)
A
AA: 38.59 (+0.91s | 2.3%)
8
5
1
6
200 M IM
3:26.23
BB
A: 3:17.89 (+8.34s | 4.0%)
8
2
8
6
50 Fly
41.85
41.85
100 Back
55.87
1:37.72
100 IM
1:37.72
150 Breast
1:01.14
2:38.86
200 Free
47.37
3:26.23
100 IM
1:48.51
100 M Breast
2:03.18
B
BB: 1:59.19 (+3.99s | 3.2%)
8
2
6
8
50 Breast
57.60
57.60
100 Breast
1:05.58
2:03.18
100 Breast
2:03.18
Zone 1 South May Firecracker 500
05/23/2025
Morgan Hill
200 M Free
3:18.75
B
BB: 3:14.99 (+3.76s | 1.9%)
8
8
2
7
50 M Fly
40.20
A
AA: 38.59 (+1.61s | 4.0%)
8
5
6
7
100 M Back
1:46.45
B
BB: 1:44.49 (+1.96s | 1.8%)
8
5
6
1
50 M Back
44.31
BB
A: 43.09 (+1.22s | 2.8%)
8
5
3
3
50 M Breast
56.01
B
BB: 54.39 (+1.62s | 2.9%)
8
1
4
6
50 M Free
40.65
B
BB: 39.79 (+0.86s | 2.1%)
8
5
4
5
Pacific Swimming 10 Under SC Championships
04/26/2025
Palo Alto
50 Y Back
43.42
-2.25s
(New PB)
B
BB: 42.89 (+0.53s | 1.2%)
8
1
3
5
50 Y Breast
51.71
-2.63s
(New PB)
B
BB: 47.69 (+4.02s | 7.8%)
8
1
9
4
50 Y Fly
37.69
-4.77s
(New PB)
BB
A: 35.99 (+1.70s | 4.5%)
8
1
5
1
50 Y Free
38.47
-1.04s
(New PB)
B: 38.19 (+0.28s | 0.7%)
8
1
2
8
Santa Clara Swim Club Race To AG Champs
03/01/2025
Morgan Hill
50 Y Free
39.51
-0.82s
(New PB)
B: 38.19 (+1.32s | 3.3%)
8
7
7
50 Y Fly
42.46
-2.71s
(New PB)
B
BB: 41.29 (+1.17s | 2.8%)
8
7
2
5
100 Y IM
1:39.73
+1.51s
B: 1:39.69 (+0.04s | 0.0%)
8
1
7
50 Y Breast
54.34
-0.24s
(New PB)
B: 53.39 (+0.95s | 1.7%)
8
1
5
7
50 Y Back
45.67
-6.60s
(New PB)
B
BB: 42.89 (+2.78s | 6.1%)
8
5
1
100 Y Back
1:37.33
B
BB: 1:30.09 (+7.24s | 7.4%)
8
6
6
5
50 Back
48.56
48.56
100 Back
48.77
1:37.33
100 Back
1:37.33
2025 Brian Malick Memorial Z1S Championships
01/24/2025
Morgan Hill
25 Y Breast
24.76
7
5
2
5
25 Y Free
19.36
7
6
8
2
25 Y Fly
18.91
7
4
6
3
25 Y Back
24.21
7
6
7
7
50 Y Free
40.33
-1.72s
(New PB)
B: 38.19 (+2.14s | 5.3%)
7
3
7
8
100 Y IM
1:38.22
B
BB: 1:29.69 (+8.53s | 8.7%)
7
4
4
1
Zone 1 South Winter Championships
12/14/2024
Morgan Hill
50 Y Free
42.05
-3.45s
(New PB)
B: 38.19 (+3.86s | 9.2%)
7
6
3
2
50 Y Fly
45.17
-8.35s
(New PB)
B
BB: 41.29 (+3.88s | 8.6%)
7
3
9
2
50 Y Breast
54.58
-9.77s
(New PB)
B: 53.39 (+1.19s | 2.2%)
7
5
2
MBSC GSMY Z1S Race To AGC C B A+
11/15/2024
Morgan Hill
50 Y Back
52.27
-2.74s
(New PB)
B: 48.29 (+3.98s | 7.6%)
7
6
4
4
50 Y Free
45.50
-5.59s
(New PB)
B: 38.19 (+7.31s | 16.1%)
7
8
1
3
SCSC Pacific Swimming Short Cours C B A+ Meet
10/04/2024
Morgan Hill
50 Y Breast
1:04.35
B: 53.39 (+10.96s | 17.0%)
7
6
5
9
50 Y Back
55.01
B: 48.29 (+6.72s | 12.2%)
7
3
2
1
50 Y Fly
53.52
B: 46.49 (+7.03s | 13.1%)
7
3
7
1
50 Y Free
51.09
B: 38.19 (+12.90s | 25.2%)
7
6
1
1
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