swimMackenzie Pierce
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 200 Freestyle | LCM | 2:25.48 | BB+0.39s to A | 2019-04-28 | 2019 Derby Invite slow pool |
| 400 Freestyle | LCM | 4:58.37 | A+4.98s to AA | 2019-04-27 | 2019 Derby Invite slow pool |
| 100 Breaststroke | LCM | 1:16.33 | AAA+2.64s to AAAA | 2021-07-28 | 2021 Futures Championships - Huntsville |
| 200 Breaststroke | LCM | 2:48.63 | AAA+7.54s to AAAA | 2021-07-28 | 2021 Futures Championships - Huntsville |
| 100 Butterfly | LCM | 1:15.49 | BB+3.30s to A | 2019-04-27 | 2019 Derby Invite slow pool |
| 200 Individual Medley | LCM | 2:35.07 | AA+5.58s to AAA | 2021-07-28 | 2021 Futures Championships - Huntsville |
| 400 Individual Medley | LCM | 5:41.09 | A+7.30s to AA | 2019-04-28 | 2019 Derby Invite slow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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
IMX 17-18 · LCM
2964 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:58.37 | 701 |
| 200 BR LCM | 2:48.63 | 814 |
| 200 IM LCM | 2:35.07 | 767 |
| 400 IM LCM | 5:41.09 | 682 |
| 200 BK LCM | — | 0 |
| 200 FL LCM | — | 0 |
IMR 17-18 · LCM
2862 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:25.48 | 646 |
| 100 BR LCM | 1:16.33 | 877 |
| 100 FL LCM | 1:15.49 | 572 |
| 200 IM LCM | 2:35.07 | 767 |
| 100 BK LCM | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle LCM 2:25.48
Front half 70.77s · back half 74.71s
400 Freestyle LCM 4:58.37
Front half 148.47s · back half 149.90s
100 Butterfly LCM 1:15.49
Front half 34.97s · back half 40.52s
400 Individual Medley LCM 5:41.09
Front half 167.79s · back half 173.30s
Progression
Faster times are higher. One card per event, all courses & history.