swimMackenzie Duffus
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.28 | BB+1.59s to A·+4.49s to Sectionals | 2019-12-14 | 2019 9th HOKI Swim and Tri Winter Champs venue |
| 100 Freestyle | SCY | 1:03.96 | BB+3.87s to A·+10.87s to Sectionals | 2020-03-01 | 2020 Northern Region 13&O Championships fast pool |
| 200 Freestyle | SCY | 2:22.39 | B+1.90s to BB·+27.40s to Sectionals | 2020-02-28 | 2020 Northern Region 13&O Championships fast pool |
| 500 Freestyle | SCY | 6:14.48 | BB+24.59s to A·+65.69s to Sectionals | 2020-02-29 | 2020 Northern Region 13&O Championships fast pool |
| 100 Backstroke | SCY | 1:20.96 | +5.07s to B·+21.67s to Sectionals | 2020-01-25 | 2020 Duck Bowl venue |
| 200 Backstroke | SCY | 2:50.78 | +5.89s to B·+41.89s to Sectionals | 2020-03-01 | 2020 Northern Region 13&O Championships fast pool |
| 100 Breaststroke | SCY | 1:26.32 | B+5.13s to BB·+18.13s to Sectionals | 2020-02-28 | 2020 Northern Region 13&O Championships fast pool |
| 200 Breaststroke | SCY | 3:09.47 | +1.28s to B·+40.08s to Sectionals | 2020-02-29 | 2020 Northern Region 13&O Championships fast pool |
| 50 Butterfly | SCY | 36.83 | +1.54s to B·+11.14s to Futures | 2019-10-12 | 2019 WAC Start-up Classic venue |
| 100 Butterfly | SCY | 1:20.57 | +4.78s to B·+22.08s to Sectionals | 2019-12-13 | 2019 9th HOKI Swim and Tri Winter Champs venue |
| 200 Individual Medley | SCY | 2:45.17 | B+8.28s to BB·+34.48s to Sectionals | 2020-03-01 | 2020 Northern Region 13&O Championships fast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 30.32 | flying | 200 Free Relay (leg 2) | 2021-11-14 | 2021 VA WAC Fall Classic |
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 15-16 · SCY
1707 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:14.48 | 518 |
| 200 BK SCY | 2:50.78 | 361 |
| 200 BR SCY | 3:09.47 | 399 |
| 200 IM SCY | 2:45.17 | 429 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 15-16 · SCY
1993 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:22.39 | 483 |
| 100 BK SCY | 1:20.96 | 332 |
| 100 BR SCY | 1:26.32 | 417 |
| 100 FL SCY | 1:20.57 | 332 |
| 200 IM SCY | 2:45.17 | 429 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:03.96
Front half 30.15s · back half 33.81s
200 Freestyle SCY 2:22.39
Front half 69.60s · back half 72.79s
500 Freestyle SCY 6:14.48
Front half 181.28s · back half 193.20s
100 Backstroke SCY 1:20.96
Front half 40.15s · back half 40.81s
200 Backstroke SCY 2:50.78
100 Breaststroke SCY 1:26.32
Front half 39.94s · back half 46.38s
200 Breaststroke SCY 3:09.47
Front half 91.08s · back half 98.39s
100 Butterfly SCY 1:20.57
Front half 37.19s · back half 43.38s
200 Individual Medley SCY 2:45.17
Front half 77.59s · back half 87.58s
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.