swimMayuko Tsukasaki
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 43.28 | +9.19s to B·+17.19s to Sectionals | 2025-12-07 | 2025 PN Fall Divisionals, Division 1 - OCAvenue |
| 100 Freestyle | SCY | 1:37.79 | +23.10s to B·+41.30s to Sectionals | 2026-10-18 | 2026 PN VAST Fall Classic Invite -Approvedfast pool |
| 50 Backstroke | SCY | 49.33 | +10.54s to B·+23.04s to Futures | 2026-10-18 | 2026 PN VAST Fall Classic Invite -Approvedfast pool |
| 50 Breaststroke | SCY | 50.06 | +6.07s to B·+20.27s to Futures | 2026-10-18 | 2026 PN VAST Fall Classic Invite -Approvedfast pool |
| 50 Butterfly | SCY | 1:02.26 | +25.27s to B·+36.57s to Futures | 2025-06-08 | 2025 PN SMAC June Mini Meetslow pool |
| 100 Individual Medley | SCY | 1:56.72 | +31.43s to B | 2025-12-07 | 2025 PN Fall Divisionals, Division 1 - OCAvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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.
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
IMX / IMR
IMR 11-12 · SCY
742 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 49.33 | 205 |
| 50 BR SCY | 50.06 | 286 |
| 50 FL SCY | 1:02.26 | 87 |
| 100 IM SCY | 1:56.72 | 164 |
| 200 FR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:37.79 · 15.0 min after 50 Backstroke
Front half 45.40s · back half 52.39s
100 Individual Medley SCY 1:56.72
Front half 58.02s · back half 58.70s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
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.