Mack Irwin
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 26.10 | BB+0.51s to A | 2025-10-26 | 2025 Martha Bass invitational - copied slow pool |
| 100 Freestyle | SCY | 55.23 | A+1.74s to AA | 2025-10-26 | 2025 Martha Bass invitational - copied slow pool |
| 200 Freestyle | SCY | 2:01.16 | A+4.07s to AA | 2025-10-25 | 2025 Martha Bass invitational - copied slow pool |
| 500 Freestyle | SCY | 5:34.39 | BB+3.60s to A | 2025-10-25 | 2025 Martha Bass invitational - copied slow pool |
| 50 Backstroke | SCY | 29.20 | BB+0.31s to A | 2025-10-05 | 2025 Swim Atlanta October Invite venue |
| 100 Backstroke | SCY | 1:01.14 | A+2.55s to AA | 2025-10-04 | 2025 Swim Atlanta October Invite venue |
| 200 Backstroke | SCY | 2:13.51 | BB+0.52s to A | 2025-10-26 | 2025 Martha Bass invitational - copied slow pool |
| 50 Butterfly | SCY | 27.31 | A+0.02s to AA | 2025-10-04 | 2025 Swim Atlanta October Invite venue |
| 100 Butterfly | SCY | 1:01.86 | BB+1.47s to A | 2025-10-25 | 2025 Martha Bass invitational - copied slow pool |
| 200 Butterfly | SCY | 2:20.30 | BB+5.81s to A | 2025-10-26 | 2025 Martha Bass invitational - copied slow pool |
| 50 Freestyle | LCM | 26.73 | AAA+1.04s to AAAA | 2026-06-27 | 2026 SE Richard Quick Invitational venue |
| 100 Freestyle | LCM | 1:03.32 | A+1.63s to AA | 2025-06-22 | 2025 SE Richard Quick Invitational venue |
| 400 Freestyle | LCM | 4:39.41 | AA+4.42s to AAA | 2026-06-27 | 2026 SE Richard Quick Invitational venue |
| 50 Backstroke | LCM | 30.11 | AAA+0.42s to AAAA | 2026-06-27 | 2026 SE Richard Quick Invitational venue |
| 100 Backstroke | LCM | 1:06.17 | AA+0.38s to AAA | 2026-06-26 | 2026 SE Richard Quick Invitational venue |
| 200 Backstroke | LCM | 2:22.54 | AAA+6.05s to AAAA | 2026-06-28 | 2026 SE Richard Quick Invitational venue |
| 50 Butterfly | LCM | 28.15 | AAA+0.16s to AAAA | 2026-06-26 | 2026 SE Richard Quick Invitational venue |
| 100 Butterfly | LCM | 1:04.43 | AA+1.34s to AAA | 2026-06-28 | 2026 SE Richard Quick Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 14.
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 13-14 · SCY
1890 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:34.39 | 647 |
| 200 BK SCY | 2:13.51 | 655 |
| 200 FL SCY | 2:20.30 | 588 |
| 200 BR SCY | — | 0 |
| 200 IM SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 13-14 · SCY
1980 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:01.16 | 686 |
| 100 BK SCY | 1:01.14 | 669 |
| 100 FL SCY | 1:01.86 | 625 |
| 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
100 Freestyle SCY 55.23
Front half 26.18s · back half 29.05s
200 Freestyle SCY 2:01.16
Front half 57.57s · back half 63.59s
500 Freestyle SCY 5:34.39
Front half 164.92s · back half 169.47s
100 Backstroke SCY 1:01.14 RT 0.68s
Front half 29.60s · back half 31.54s
200 Backstroke SCY 2:13.51
Front half 64.55s · back half 68.96s
100 Butterfly SCY 1:01.86
Front half 28.57s · back half 33.29s
400 Freestyle LCM 4:39.41
Front half 135.83s · back half 143.58s
100 Backstroke LCM 1:06.17
Front half 31.67s · back half 34.50s
200 Backstroke LCM 2:22.54
Front half 69.79s · back half 72.75s
100 Butterfly LCM 1:04.43
Front half 29.63s · back half 34.80s
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.