Mason Duffy
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.15 | A+0.06s to AA·Sectionals ✓+1.86s to Futures | 2026-01-16 | 2026 PN VAST 49th Annual Washington Open- APPvenue |
| 100 Freestyle | SCY | 50.06 | AA+1.77s to AAA·Sectionals ✓+3.67s to Futures | 2026-03-12 | 2026 Bellevue Club Premier Invite- Approvedfast pool |
| 200 Freestyle | SCY | 1:55.64 | A+4.45s to AA·+3.85s to Sectionals | 2025-10-18 | 2025 PN VAST Fall Classicvenue |
| 500 Freestyle | SCY | 5:22.15 | BB+7.26s to A·+19.46s to Sectionals | 2025-10-05 | 2025 PN SMAC Fall Kick-Off Invitationalvenue |
| 50 Backstroke | SCY | 25.32 | AA+0.73s to AAA·+1.63s to Futures | 2026-01-17 | 2026 PN VAST 49th Annual Washington Open- APPvenue |
| 100 Backstroke | SCY | 53.70 | AA+1.21s to AAA·Sectionals ✓+2.21s to Futures | 2026-02-08 | 2026 (WIAA) Metro(SeaKing District Il) BoysOBvenue |
| 200 Backstroke | SCY | 2:00.67 | A+0.68s to AA·Sectionals ✓+7.88s to Futures | 2025-11-22 | 2025 PN Nov. AGI, Division 2 (SMAC)venue |
| 50 Breaststroke | SCY | 28.75 | AA+0.46s to AAA·+2.46s to Futures | 2025-10-22 | 1657244 |
| 100 Breaststroke | SCY | 1:04.64 | A+2.55s to AA·+1.45s to Sectionals | 2026-01-17 | 2026 PN VAST 49th Annual Washington Open- APPvenue |
| 200 Breaststroke | SCY | 2:23.94 | BB+3.15s to A·+6.65s to Sectionals | 2026-01-18 | 2026 PN VAST 49th Annual Washington Open- APPvenue |
| 50 Butterfly | SCY | 2:14.14 | +102.95s to B·+111.25s to Futures | 2024-01-27 | 2024 PN SMAC IMX/IMR Invitational |
| 100 Butterfly | SCY | 52.69 | AA+0.70s to AAA·Sectionals ✓+2.10s to Futures | 2026-02-21 | 2026 WIAA 3A Boys HS State Champs- OBvenue |
| 200 Butterfly | SCY | 2:04.99 | A+2.80s to AA·+1.60s to Sectionals | 2025-10-18 | 2025 PN VAST Fall Classicvenue |
| 200 Individual Medley | SCY | 2:01.23 | AA+3.74s to AAA·Sectionals ✓+7.34s to Futures | 2026-01-16 | 2026 PN VAST 49th Annual Washington Open- APPvenue |
| 400 Individual Medley | SCY | 4:29.08 | A+4.59s to AA·+4.39s to Sectionals | 2026-02-27 | 2026 PN February AGI, Div 1-Approvedvenue |
| 50 Freestyle | LCM | 26.32 | AA+0.83s to AAA·Sectionals ✓+1.73s to Futures | 2025-07-18 | 2025 PN 13&O LC Senior Championshipsvenue |
| 100 Freestyle | LCM | 57.55 | AA+1.96s to AAA·Sectionals ✓+3.96s to Futures | 2025-05-31 | 2025 PN VAST Summer Sprints and Distance Chalvenue |
| 200 Freestyle | LCM | 2:12.91 | A+5.22s to AA·+4.22s to Sectionals | 2025-06-01 | 2025 PN VAST Summer Sprints and Distance Chalvenue |
| 400 Freestyle | LCM | 5:11.14 | B+3.25s to BB·+36.75s to Sectionals | 2026-04-24 | 2026 PN SMAC Spring Showers LC Challengevenue |
| 50 Backstroke | LCM | 28.79 | AAA+0.80s to AAAA·+0.90s to Futures | 2026-07-18 | 2026 PN 13 & Over LC Championships- Approvedfast pool |
| 100 Backstroke | LCM | 1:03.70 | AA+1.81s to AAA·Sectionals ✓+3.11s to Futures | 2025-07-18 | 2025 PN 13&O LC Senior Championshipsvenue |
| 200 Backstroke | LCM | 2:20.56 | AA+5.77s to AAA·Sectionals ✓+8.67s to Futures | 2026-07-16 | 2026 PN 13 & Over LC Championships- Approvedfast pool |
| 100 Breaststroke | LCM | 1:24.10 | B+2.31s to BB·+10.40s to Sectionals | 2023-04-28 | 2023 PN SSCD Dick LaFave Classic |
| 200 Breaststroke | LCM | 2:59.81 | B+1.32s to BB·+18.93s to Sectionals | 2026-06-07 | 2026 PN VAST Summer Sprint & Dist. - Approvedvenue |
| 50 Butterfly | LCM | 27.30 | AAA+0.91s to AAAA·+1.01s to Futures | 2026-06-30 | 2026 PN SMAC Summer Classic Invite- Approvedvenue |
| 100 Butterfly | LCM | 1:01.04 | AA+1.35s to AAA·Sectionals ✓+3.05s to Futures | 2026-01-01 | Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01 |
| 200 Butterfly | LCM | 2:28.01 | BB+2.62s to A·+6.92s to Sectionals | 2026-07-19 | 2026 PN 13 & Over LC Championships- Approvedfast pool |
| 200 Individual Medley | LCM | 2:23.89 | A+1.50s to AA·Sectionals ✓+11.10s to Futures | 2026-01-01 | Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01 |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 23.56 | flat | 200 Free Relay | 2025-02-09 | 2025 Metro League Boys H.S. Swim Champs- OB |
| 50 Freestyle | SCY | 22.77 | flying | 200 Medley Relay (leg 4) | 2025-02-15 | 2024-2025 Sea-King District II 3A Boys Champs |
| 50 Freestyle | SCY | 23.29 | flying | 200 Free Relay (leg 2) | 2026-02-14 | 2026 (WIAA) Sea-King Dist II 3A Boys H.S. -OB |
| 100 Freestyle | SCY | 50.33 | flat | 400 Free Relay | 2026-02-08 | 2026 (WIAA) Metro(SeaKing District Il) BoysOB |
| 100 Freestyle | SCY | 49.00 | flying | 400 Free Relay (leg 2) | 2026-02-21 | 2026 WIAA 3A Boys HS State Champs- OB |
| 50 Backstroke | SCY | 24.79 | flat | 200 Medley Relay | 2026-02-08 | 2026 (WIAA) Metro(SeaKing District Il) BoysOB |
| 50 Butterfly | SCY | 23.81 | flying | 200 Medley Relay (leg 3) | 2026-01-10 | 2026 Kentridge High School Invitational- Obse |
| 50 Freestyle | LCM | 24.52 | flying | 200 Medley Relay (leg 4) | 2026-07-28 | Finals - WZ LCM Senior Champs 2026 - copied |
| 100 Freestyle | LCM | 56.69 | flat | 400 Free Relay | 2026-07-31 | Finals - WZ LCM Senior Champs 2026 - copied |
| 100 Freestyle | LCM | 57.37 | flying | 400 Free Relay (leg 2) | 2025-07-20 | 2025 PN 13&O LC Senior Championships |
| 100 Freestyle | LCM | 55.30 | flying | 400 Medley Relay (leg 4) | 2026-08-01 | Finals - WZ LCM Senior Champs 2026 - copied |
| 50 Butterfly | LCM | 26.86 | flying | 200 Medley Relay (leg 3) | 2026-07-18 | 2026 PN 13 & Over LC Championships- Approved |
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 17-18 · SCY
4049 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:22.15 | 604 |
| 200 BK SCY | 2:00.67 | 714 |
| 200 BR SCY | 2:23.94 | 604 |
| 200 FL SCY | 2:04.99 | 677 |
| 200 IM SCY | 2:01.23 | 759 |
| 400 IM SCY | 4:29.08 | 691 |
IMR 17-18 · SCY
3620 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:55.64 | 650 |
| 100 BK SCY | 53.70 | 754 |
| 100 BR SCY | 1:04.64 | 649 |
| 100 FL SCY | 52.69 | 808 |
| 200 IM SCY | 2:01.23 | 759 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.06 RT 0.53s
Front half 24.16s · back half 25.90s
200 Freestyle SCY 1:55.64 RT 0.76s
Front half 57.57s · back half 58.07s
500 Freestyle SCY 5:22.15
Front half 157.30s · back half 164.85s
100 Backstroke SCY 53.70
Front half 26.22s · back half 27.48s
200 Backstroke SCY 2:00.67
Front half 59.08s · back half 61.59s
100 Breaststroke SCY 1:04.64
Front half 30.58s · back half 34.06s
200 Breaststroke SCY 2:23.94 RT 0.74s
Front half 70.56s · back half 73.38s
100 Butterfly SCY 52.69 RT 0.70s
Front half 24.33s · back half 28.36s
200 Butterfly SCY 2:04.99 RT 0.74s
Front half 59.57s · back half 65.42s
200 Individual Medley SCY 2:01.23 RT 0.70s
Front half 55.94s · back half 65.29s
400 Individual Medley SCY 4:29.08
Front half 133.53s · back half 135.55s
200 Freestyle LCM 2:12.91 RT 0.74s
Front half 62.94s · back half 69.97s
400 Freestyle LCM 5:11.14 RT 0.72s
Front half 154.70s · back half 156.44s
200 Backstroke LCM 2:20.56 RT 0.59s· 11.7 min after 50 Butterfly
Front half 68.22s · back half 72.34s
200 Breaststroke LCM 2:59.81 RT 0.75s· 13.3 min after 200 Backstroke
Front half 86.58s · back half 93.23s
100 Butterfly LCM 1:01.04
Front half 28.42s · back half 32.62s
200 Butterfly LCM 2:28.01 RT 0.72s
Front half 67.16s · back half 80.85s
200 Individual Medley LCM 2:23.89
Front half 67.74s · back half 76.15s
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.