swimMason Duong
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 17.44 | 2025-10-17 | 2025 WMS Boo Bash | |
| 50 Freestyle | SCY | 27.99 | A+1.00s to AA·+4.70s to Sectionals | 2026-03-08 | 2026 Lake Michigan Regional Meet venue |
| 100 Freestyle | SCY | 1:00.57 | A+1.78s to AA·+10.88s to Sectionals | 2026-03-07 | 2026 Lake Michigan Regional Meet venue |
| 200 Freestyle | SCY | 2:34.97 | B+10.08s to BB·+45.28s to Sectionals | 2025-11-15 | 2025 GR Gales of November Open Invitational |
| 50 Backstroke | SCY | 37.65 | B+2.06s to BB·+13.16s to Sectionals | 2024-11-16 | 2024 GR Gales of November Open Invitational venue |
| 25 Breaststroke | SCY | 18.29 | 2025-01-04 | 2025 JAWS New Years Classic venue | |
| 50 Breaststroke | SCY | 34.70 | AA+1.41s to AAA·+7.51s to Sectionals | 2026-03-22 | 2026 SCY MAGS Championship Meet fast pool |
| 100 Breaststroke | SCY | 1:06.45 | AAAA·+1.36s to Sectionals | 2026-03-20 | 2026 SCY MAGS Championship Meet |
| 200 Breaststroke | SCY | 2:48.74 | BB+0.35s to A·+29.25s to Sectionals | 2026-03-21 | 2026 SCY MAGS Championship Meet fast pool |
| 50 Butterfly | SCY | 28.28 | AA+0.09s to AAA·+4.59s to Sectionals | 2025-03-07 | 2025 SCY MAGS Championship Meet |
| 100 Butterfly | SCY | 1:13.18 | BB+3.89s to A·+17.39s to Sectionals | 2025-12-06 | EGRA 2025 Winter Washout venue |
| 100 Individual Medley | SCY | 1:10.48 | BB+0.49s to A | 2026-03-21 | 2026 SCY MAGS Championship Meet fast pool |
| 50 Freestyle | SCM | 35.11 | B+1.42s to BB | 2024-05-11 | 2024 WMS Spring Splash slow pool |
| 50 Breaststroke | SCM | 45.44 | B+1.15s to BB | 2024-05-11 | 2024 WMS Spring Splash slow pool |
| 100 Breaststroke | SCM | 1:45.56 | +3.27s to B | 2024-05-11 | 2024 WMS Spring Splash slow pool |
| 50 Butterfly | SCM | 41.08 | +0.09s to B | 2024-05-11 | 2024 WMS Spring Splash slow pool |
| 50 Freestyle | LCM | 33.57 | BB+1.48s to A·+7.28s to Sectionals | 2025-06-21 | 2025 Summer Solstice Meet venue |
| 100 Freestyle | LCM | 1:15.13 | BB+4.74s to A·+17.34s to Sectionals | 2025-07-12 | 2025 West Michigan Classic venue |
| 200 Freestyle | LCM | 2:52.40 | B+6.01s to BB·+46.41s to Sectionals | 2025-07-12 | 2025 West Michigan Classic venue |
| 50 Backstroke | LCM | 44.12 | B+2.93s to BB·+15.43s to Sectionals | 2024-07-13 | 2024 West Michigan Classic venue |
| 100 Backstroke | LCM | 1:36.18 | B+6.59s to BB·+30.99s to Sectionals | 2024-07-21 | 2024 MAGS Long Course Championship Meet venue |
| 50 Breaststroke | LCM | 42.79 | BB+0.80s to A·+10.80s to Sectionals | 2025-07-20 | 2025 LC MAGS Championship Meet fast pool |
| 100 Breaststroke | LCM | 1:33.39 | BB+2.10s to A·+17.90s to Sectionals | 2025-07-18 | 2025 LC MAGS Championship Meet fast pool |
| 200 Breaststroke | LCM | 3:21.34 | BB+5.95s to A·+38.85s to Sectionals | 2025-07-19 | 2025 LC MAGS Championship Meet fast pool |
| 50 Butterfly | LCM | 35.92 | BB+0.63s to A·+8.53s to Sectionals | 2025-06-14 | 2025 JAWS Sun & Fun venue |
| 200 Individual Medley | LCM | 2:59.96 | BB+5.77s to A·+37.97s to Sectionals | 2025-07-12 | 2025 West Michigan Classic |
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 | 28.76 | flying | 200 Free Relay (leg 2) | 2025-03-09 | 2025 SCY MAGS Championship Meet |
| 100 Freestyle | SCY | 1:04.35 | flying | 400 Free Relay (leg 2) | 2025-03-07 | 2025 SCY MAGS Championship Meet |
| 50 Breaststroke | SCY | 36.41 | flying | 200 Medley Relay (leg 2) | 2025-03-09 | 2025 SCY MAGS Championship Meet |
| 50 Butterfly | SCY | 34.11 | flying | 200 Medley Relay (leg 3) | 2024-10-19 | 2024 Boo Bash Invitational |
| 50 Freestyle | LCM | 36.82 | flying | 200 Free Relay (leg 2) | 2024-07-21 | 2024 MAGS Long Course Championship Meet |
| 50 Butterfly | LCM | 40.72 | flying | 200 Medley Relay (leg 3) | 2024-07-20 | 2024 MAGS Long Course 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 · SCY
1587 points (2/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BR SCY | 1:06.45 | 1061 |
| 100 FL SCY | 1:13.18 | 526 |
| 500 FR SCY | — | 0 |
| 100 BK SCY | — | 0 |
| 200 IM SCY | — | 0 |
IMR 11-12 · SCY
3087 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:34.97 | 430 |
| 50 BK SCY | 37.65 | 419 |
| 50 BR SCY | 34.70 | 747 |
| 50 FL SCY | 28.28 | 840 |
| 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 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 1:15.13
Front half 35.65s · back half 39.48s
200 Freestyle LCM 2:52.40
100 Backstroke LCM 1:36.18
Front half 46.37s · back half 49.81s
100 Breaststroke LCM 1:33.39
Front half 44.17s · back half 49.22s
200 Breaststroke LCM 3:21.34
Front half 98.38s · back half 102.96s
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.