swimMason Duong
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.99 | A+1.00s to AA·+5.40s to Sectionals | 2026-03-08 | 2026 Lake Michigan Regional Meetvenue |
| 100 Freestyle | SCY | 1:00.57 | A+1.78s to AA·+11.58s to Sectionals | 2026-03-07 | 2026 Lake Michigan Regional Meetvenue |
| 200 Freestyle | SCY | 2:35.97 | B+11.08s to BB·+48.48s to Sectionals | 2025-01-25 | 2025 MLA Big Lakevenue |
| 50 Backstroke | SCY | 37.65 | B+2.06s to BB·+13.16s to Sectionals | 2024-11-16 | 2024 GR Gales of November Open Invitationalvenue |
| 25 Breaststroke | SCY | 18.29 | 2025-01-04 | 2025 JAWS New Years Classicvenue | |
| 50 Breaststroke | SCY | 34.70 | AA+1.41s to AAA·+7.51s to Sectionals | 2026-03-22 | 2026 SCY MAGS Championship Meetfast pool |
| 100 Breaststroke | SCY | 1:17.34 | A+2.45s to AA·+13.75s to Sectionals | 2026-03-20 | 2026 SCY MAGS Championship Meetfast pool |
| 200 Breaststroke | SCY | 2:48.74 | BB+0.35s to A·+30.15s to Sectionals | 2026-03-21 | 2026 SCY MAGS Championship Meetfast pool |
| 50 Butterfly | SCY | 30.56 | A+0.87s to AA·+6.87s to Sectionals | 2026-03-07 | 2026 Lake Michigan Regional Meetvenue |
| 100 Butterfly | SCY | 1:13.18 | BB+3.89s to A·+19.19s to Sectionals | 2025-12-06 | EGRA 2025 Winter Washoutvenue |
| 100 Individual Medley | SCY | 1:10.48 | BB+0.49s to A | 2026-03-21 | 2026 SCY MAGS Championship Meetfast pool |
| 50 Freestyle | SCM | 35.11 | B+1.42s to BB | 2024-05-11 | 2024 WMS Spring Splashslow pool |
| 50 Breaststroke | SCM | 45.44 | B+1.15s to BB | 2024-05-11 | 2024 WMS Spring Splashslow pool |
| 100 Breaststroke | SCM | 1:45.56 | +3.27s to B | 2024-05-11 | 2024 WMS Spring Splashslow pool |
| 50 Butterfly | SCM | 41.08 | +0.09s to B | 2024-05-11 | 2024 WMS Spring Splashslow pool |
| 50 Freestyle | LCM | 30.38 | AA+0.99s to AAA·+4.39s to Sectionals | 2026-07-12 | 2026 West Michigan Classicfast pool |
| 100 Freestyle | LCM | 1:07.56 | A+0.07s to AA·+10.97s to Sectionals | 2026-07-17 | 2026 MI LCM MAGS Championship Meetfast pool |
| 200 Freestyle | LCM | 2:52.40 | B+6.01s to BB·+48.91s to Sectionals | 2025-07-12 | 2025 West Michigan Classicvenue |
| 50 Backstroke | LCM | 44.12 | B+2.93s to BB·+15.43s to Sectionals | 2024-07-13 | 2024 West Michigan Classicvenue |
| 100 Backstroke | LCM | 1:36.18 | B+6.59s to BB·+31.79s to Sectionals | 2024-07-21 | 2024 MAGS Long Course Championship Meetvenue |
| 50 Breaststroke | LCM | 40.19 | A+0.20s to AA·+8.20s to Sectionals | 2026-07-11 | 2026 West Michigan Classicfast pool |
| 100 Breaststroke | LCM | 1:28.79 | A+1.60s to AA·+16.00s to Sectionals | 2026-07-17 | 2026 MI LCM MAGS Championship Meetfast pool |
| 200 Breaststroke | LCM | 3:17.30 | BB+1.91s to A·+37.51s to Sectionals | 2026-07-18 | 2026 MI LCM MAGS Championship Meetfast pool |
| 50 Butterfly | LCM | 34.46 | A+0.87s to AA·+7.07s to Sectionals | 2026-07-12 | 2026 West Michigan Classicfast pool |
| 100 Butterfly | LCM | 1:28.34 | B+1.05s to BB·+26.85s to Sectionals | 2026-07-12 | 2026 West Michigan Classicfast pool |
| 200 Individual Medley | LCM | 3:08.23 | BB+14.04s to A·+48.84s to Sectionals | 2025-07-13 | 2025 West Michigan Classicvenue |
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.86 | flat | 200 Free Relay | 2024-11-16 | 2024 GR Gales of November Open Invitational |
| 50 Freestyle | SCY | 27.20 | flying | 200 Free Relay (leg 3) | 2025-11-15 | 2025 GR Gales of November Open Invitational |
| 100 Freestyle | SCY | 1:00.39 | flying | 400 Free Relay (leg 4) | 2026-03-20 | 2026 SCY MAGS Championship Meet |
| 100 Freestyle | SCY | 1:00.94 | flying | 400 Medley Relay (leg 4) | 2026-03-21 | 2026 SCY MAGS Championship Meet |
| 50 Breaststroke | SCY | 35.74 | flying | 200 Medley Relay (leg 2) | 2026-01-17 | MLA 2026 Big Lake Invite |
| 50 Butterfly | SCY | 30.37 | flying | 200 Medley Relay (leg 3) | 2026-03-20 | 2026 SCY MAGS Championship Meet |
| 50 Freestyle | SCM | 35.31 | flying | 200 Free Relay (leg 3) | 2024-05-11 | 2024 WMS Spring Splash |
| 50 Backstroke | SCM | 41.37 | flat | 200 Medley Relay | 2024-05-11 | 2024 WMS Spring Splash |
| 50 Freestyle | LCM | 32.90 | flat | 200 Free Relay | 2025-07-19 | 2025 LC MAGS Championship Meet |
| 50 Freestyle | LCM | 29.84 | flying | 200 Free Relay (leg 4) | 2026-07-19 | 2026 MI LCM MAGS Championship Meet |
| 100 Freestyle | LCM | 1:08.40 | flat | 400 Free Relay | 2026-07-17 | 2026 MI LCM MAGS Championship Meet |
| 100 Freestyle | LCM | 1:07.15 | flying | 400 Medley Relay (leg 4) | 2026-07-18 | 2026 MI LCM MAGS Championship Meet |
| 50 Butterfly | LCM | 34.61 | flying | 200 Medley Relay (leg 3) | 2026-07-18 | 2026 MI LCM MAGS Championship Meet |
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 11-12 · LCM
2058 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:36.18 | 391 |
| 100 BR LCM | 1:28.79 | 704 |
| 100 FL LCM | 1:28.34 | 451 |
| 200 IM LCM | 3:08.23 | 512 |
| 400 FR LCM | — | 0 |
IMR 11-12 · SCY
2905 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:35.97 | 422 |
| 50 BK SCY | 37.65 | 419 |
| 50 BR SCY | 34.70 | 747 |
| 50 FL SCY | 30.56 | 666 |
| 100 IM SCY | 1:10.48 | 651 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:00.57
Front half 28.77s · back half 31.80s
200 Freestyle SCY 2:35.97
Front half 77.55s · back half 78.42s
100 Breaststroke SCY 1:17.34
Front half 35.54s · back half 41.80s
200 Breaststroke SCY 2:48.74
Front half 80.12s · back half 88.62s
100 Butterfly SCY 1:13.18
Front half 34.22s · back half 38.96s
100 Individual Medley SCY 1:10.48
Front half 33.93s · back half 36.55s
100 Breaststroke SCM 1:45.56
Front half 50.01s · back half 55.55s
100 Freestyle LCM 1:07.56
Front half 32.68s · back half 34.88s
200 Freestyle LCM 2:52.40
100 Backstroke LCM 1:36.18
Front half 46.37s · back half 49.81s
100 Breaststroke LCM 1:28.79
Front half 40.86s · back half 47.93s
200 Breaststroke LCM 3:17.30
Front half 96.47s · back half 100.83s
100 Butterfly LCM 1:28.34
Front half 41.60s · back half 46.74s
200 Individual Medley LCM 3:08.23
Front half 87.59s · back half 100.64s
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.