Tatsumasa Sekine

Age: 8 years old
Age Category: 10 & under
Team: Santa Clara Swim Club | Pacific Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Pacific Swimming Santa Clara Swim Club
Free 25 Y 15.27 8 01/16/2026 20 5
Free 50 Y 32.38 8 01/16/2026 BB A: 31.09 (+1.29s | 4.0%) 89 9
Free 100 Y 1:15.15 8 09/27/2025 BB A: 1:09.79 (+5.36s | 7.1%) 131 14
Free 500 Y 7:15.08 8 12/12/2025 BB A: 6:43.39 (+31.69s | 7.3%) 56 12
50 Free
35.70
35.70
100 Free
43.36
1:19.06
100 Free
1:19.06
150 Free
44.63
2:03.69
200 Free
44.80
2:48.49
100 Free
1:29.43
250 Free
44.05
3:32.54
300 Free
45.35
4:17.89
100 Free
1:29.40
350 Free
45.98
5:03.87
400 Free
45.19
5:49.06
100 Free
1:31.17
450 Free
44.91
6:33.97
500 Free
41.11
7:15.08
100 Free
1:26.02
Back 25 Y 17.88 8 01/16/2026 10 5
Back 50 Y 38.63 8 12/12/2025 BB A: 37.59 (+1.04s | 2.7%) 84 13
Back 100 Y 1:26.92 8 12/12/2025 BB A: 1:19.59 (+7.33s | 8.4%) 92 14
50 Back
41.40
41.40
100 Back
45.52
1:26.92
100 Back
1:26.92
Breast 25 Y 20.76 8 01/16/2026 17 5
Breast 50 Y 47.11 8 09/27/2025 BB A: 42.09 (+5.02s | 10.7%) 176 22
Breast 100 Y 1:44.45 8 09/27/2025 B BB: 1:42.29 (+2.16s | 2.1%) 162 25
Fly 25 Y 15.26 8 01/16/2026 4 2
Fly 50 Y 34.10 8 10/25/2025 AA AAA: 32.59 (+1.51s | 4.4%) 39 8
Fly 100 Y 1:18.82 8 11/14/2025 AA AAA: 1:14.59 (+4.23s | 5.4%) 25 7
50 Fly
37.16
37.16
100 Fly
41.66
1:18.82
100 Fly
1:18.82
IM 100 Y 1:22.12 8 01/16/2026 BB A: 1:19.69 (+2.43s | 3.0%) 83 12
IM 200 Y 2:54.09 8 01/16/2026 BB A: 2:53.49 (+0.60s | 0.3%) 50 11

Long course distance

Event Time Age Date Standard Next Standard Pacific Swimming Santa Clara Swim Club
Free 50 M 39.97 8 05/30/2025 B BB: 39.79 (+0.18s | 0.5%) 101 11
Free 100 M 1:31.52 8 06/27/2025 B BB: 1:30.59 (+0.93s | 1.0%) 104 15
Free 200 M 3:18.75 8 05/23/2025 B BB: 3:14.99 (+3.76s | 1.9%) 84 12
Back 50 M 44.31 8 05/23/2025 BB A: 43.09 (+1.22s | 2.8%) 48 8
Back 100 M 1:46.45 8 05/23/2025 B BB: 1:44.49 (+1.96s | 1.8%) 79 11
Breast 50 M 53.42 8 06/27/2025 BB A: 47.89 (+5.53s | 10.4%) 77 11
Breast 100 M 2:03.18 8 05/30/2025 B BB: 1:59.19 (+3.99s | 3.2%) 118 18
50 Breast
57.60
57.60
100 Breast
1:05.58
2:03.18
100 Breast
2:03.18
Fly 50 M 39.50 8 05/30/2025 A AA: 38.59 (+0.91s | 2.3%) 28 5
Fly 100 M 1:29.64 8 07/11/2025 AA AAA: 1:25.09 (+4.55s | 5.1%) 20 5
IM 200 M 3:26.23 8 05/30/2025 BB A: 3:17.89 (+8.34s | 4.0%) 42 8
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

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.

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.