swimstats

Tatsumasa Sekine

Mage 9HIMTPCPCSCSCZ1S

110 plausible swims · 17 meets · 2026-01-01 → 2026-08-08

Personal records

EventCourseBest CutDateMeet
25 Freestyle SCY 15.27 2026-01-18 2026 Brian Malick Memorial Z1S Championshipsvenue
50 Freestyle SCY 31.03 +7.84s to Sectionals 2026-03-21 SCY Spring Age Group Championshipsvenue
100 Freestyle SCY 1:08.53 +17.54s to Sectionals 2026-04-11 2026 Far Western SC Hosted By SCSCvenue
200 Freestyle SCY 2:45.86 +54.07s to Sectionals 2026-02-28 Swim South Bayvenue
25 Backstroke SCY 17.88 2026-01-17 2026 Brian Malick Memorial Z1S Championshipsvenue
50 Backstroke SCY 35.79 +12.10s to Futures 2026-04-12 2026 Far Western SC Hosted By SCSCvenue
100 Backstroke SCY 1:19.49 +24.00s to Sectionals 2026-03-29 Swim South Bayvenue
25 Breaststroke SCY 20.76 2026-01-17 2026 Brian Malick Memorial Z1S Championshipsvenue
50 Breaststroke SCY 42.68 +16.39s to Futures 2026-03-29 Swim South Bayvenue
100 Breaststroke SCY 1:30.51 +27.32s to Sectionals 2026-03-28 Swim South Bayvenue
25 Butterfly SCY 15.26 2026-01-17 2026 Brian Malick Memorial Z1S Championshipsvenue
50 Butterfly SCY 31.94 +9.05s to Futures 2026-04-11 2026 Far Western SC Hosted By SCSCvenue
100 Butterfly SCY 1:13.74 +18.55s to Sectionals 2026-03-21 SCY Spring Age Group Championshipsvenue
100 Individual Medley SCY 1:15.55 2026-04-11 2026 Far Western SC Hosted By SCSCvenue
200 Individual Medley SCY 2:45.32 +41.33s to Sectionals 2026-03-01 Swim South Bayvenue
50 Freestyle LCM 34.32 +7.33s to Sectionals 2026-01-01 2026 Western Zone Age Group LCM Championships
100 Freestyle LCM 1:17.25 +18.26s to Sectionals 2026-06-27 2026 Santa Clara LC Race To Age Group Champsvenue
200 Freestyle LCM 2:40.33 +31.64s to Sectionals 2026-07-31 Long Course Far Westernsvenue
50 Backstroke LCM 38.87 +10.98s to Futures 2026-08-02 Long Course Far Westernsvenue
100 Backstroke LCM 1:27.52 +22.33s to Sectionals 2026-01-01 2026 Western Zone Age Group LCM Championships
50 Breaststroke LCM 45.97 +15.08s to Futures 2026-06-27 2026 Santa Clara LC Race To Age Group Champsvenue
50 Butterfly LCM 34.85 +8.56s to Futures 2026-07-17 2026 Adam Szmidt Memorial PC Summer AG Champsvenue
100 Butterfly LCM 1:19.10 +16.01s to Sectionals 2026-07-18 2026 Adam Szmidt Memorial PC Summer AG Champsvenue
200 Individual Medley LCM 2:58.21 +33.52s to Sectionals 2026-07-19 2026 Adam Szmidt Memorial PC Summer AG Champsvenue

National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.

Fastest relay legs

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 30.46 flying 200 Free Relay (leg 4) 2026-03-22 SCY Spring Age Group Championships
50 Butterfly SCY 32.21 flying 200 Medley Relay (leg 3) 2026-03-21 SCY Spring Age Group Championships
50 Freestyle LCM 51.23 flat 200 Free Relay 2026-08-01 Long Course Far Westerns
50 Freestyle LCM 32.53 flying 200 Medley Relay (leg 4) 2026-08-07 2026 Western Zone Age Group Championships
50 Freestyle LCM 34.06 flying 200 Free Relay (leg 3) 2026-07-17 2026 Adam Szmidt Memorial PC Summer AG Champs
50 Butterfly LCM 35.28 flying 200 Medley Relay (leg 3) 2026-08-02 Long Course Far Westerns

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

IMX / IMR

IMX 10 & under · LCM

3529 points (4/5 events — incomplete)

EventTime Points
200 FR LCM 2:40.33 846
100 BK LCM 1:27.52 763
100 FL LCM 1:19.10 1018
200 IM LCM 2:58.21 902
100 BR LCM— 0

IMR 10 & under · LCM

4221 points (5/5 events)

EventTime Points
100 FR LCM 1:17.25 737
50 BK LCM 38.87 861
50 BR LCM 45.97 735
50 FL LCM 34.85 986
200 IM LCM 2:58.21 902

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 1:08.53

32.41
36.12

Front half 32.41s · back half 36.12s

100 Butterfly SCY 1:13.74

34.33
39.41

Front half 34.33s · back half 39.41s

100 Individual Medley SCY 1:15.55

35.35
40.20

Front half 35.35s · back half 40.20s

100 Freestyle LCM 1:17.25

37.82
39.43

Front half 37.82s · back half 39.43s

200 Freestyle LCM 2:40.33

78.60
81.73

Front half 78.60s · back half 81.73s

100 Butterfly LCM 1:19.10

36.87
42.23

Front half 36.87s · back half 42.23s

200 Individual Medley LCM 2:58.21

84.38
93.83

Front half 84.38s · back half 93.83s

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.

Progression

Faster times are higher. One card per event, all courses & history.

25 Freestyle SCY 15.27 1 swim
50 Freestyle SCY 31.03 6 swims
100 Freestyle SCY 1:08.53 5 swims
200 Freestyle SCY 2:45.86 1 swim
25 Backstroke SCY 17.88 1 swim
50 Backstroke SCY 35.79 5 swims
100 Backstroke SCY 1:19.49 3 swims
25 Breaststroke SCY 20.76 1 swim
50 Breaststroke SCY 42.68 3 swims
100 Breaststroke SCY 1:30.51 1 swim
25 Butterfly SCY 15.26 1 swim
50 Butterfly SCY 31.94 6 swims
100 Butterfly SCY 1:13.74 2 swims
100 Individual Medley SCY 1:15.55 7 swims
200 Individual Medley SCY 2:45.32 3 swims
50 Freestyle LCM 34.32 8 swims
100 Freestyle LCM 1:17.25 2 swims
200 Freestyle LCM 2:40.33 1 swim
50 Backstroke LCM 38.87 9 swims
100 Backstroke LCM 1:27.52 5 swims
50 Breaststroke LCM 45.97 3 swims
50 Butterfly LCM 34.85 15 swims
100 Butterfly LCM 1:19.10 12 swims
200 Individual Medley LCM 2:58.21 8 swims