Sienna Mason
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.29 | BB+0.30s to A | 2025-07-20 | 2025 ISI Summer ACAD Regional venue |
| 100 Freestyle | SCY | 1:00.27 | BB+1.68s to A | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs |
| 50 Backstroke | SCY | 28.76 | A+0.07s to AA | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs |
| 100 Backstroke | SCY | 1:00.55 | AA+2.06s to AAA | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs |
| 200 Backstroke | SCY | 2:12.44 | AA+5.35s to AAA | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs |
| 50 Butterfly | SCY | 28.16 | AA+0.77s to AAA | 2025-07-20 | 2025 ISI Summer ACAD Regional venue |
| 100 Butterfly | SCY | 1:03.72 | BB+0.43s to A | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs |
| 100 Individual Medley | SCY | 1:07.88 | 2025-03-27 | 2025 Sun Kissed Invitational Jr/Sr Champs | |
| 200 Backstroke | LCM | 2:39.62 | A+5.13s to AA | 2024-07-28 | 2024 LC Illinois Senior Championships venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
IMX / IMR
IMX 17-18 · SCY
727 points (1/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 2:12.44 | 727 |
| 500 FR SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 200 IM SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
1398 points (2/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:00.55 | 749 |
| 100 FL SCY | 1:03.72 | 649 |
| 200 FR SCY | — | 0 |
| 100 BR SCY | — | 0 |
| 200 IM SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Backstroke LCM 2:39.62 RT 0.73s
Front half 79.06s · back half 80.56s
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.
Progression
Faster times are higher. One card per event, all courses & history.