Mason Janusziewicz
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 14.59 | 2024-05-04 | MAC May-hem Mini Meet | |
| 50 Freestyle | SCY | 28.02 | A+1.03s to AA·+5.63s to Sectionals | 2026-01-18 | 2026 Fox Winter Invitational Meetvenue |
| 100 Freestyle | SCY | 1:00.05 | A+1.26s to AA·+11.56s to Sectionals | 2026-03-06 | 2026 MD LSC 14 & U Championshipsvenue |
| 200 Freestyle | SCY | 2:03.86 | AA+1.27s to AAA·+17.57s to Sectionals | 2026-03-07 | 2026 MD LSC 14 & U Championshipsvenue |
| 500 Freestyle | SCY | 5:38.01 | AA+8.02s to AAA·+50.62s to Sectionals | 2026-03-05 | 2026 MD LSC 14 & U Championshipsvenue |
| 25 Backstroke | SCY | 23.33 | 2021-12-18 | 2021 Clippers' Fast & the Flurriest Meetslow pool | |
| 50 Backstroke | SCY | 31.11 | AA+1.42s to AAA·+7.42s to Futures | 2026-03-07 | 2026 MD LSC 14 & U Championshipsvenue |
| 100 Backstroke | SCY | 1:04.95 | AA+2.16s to AAA·+10.46s to Sectionals | 2026-03-08 | 2026 MD LSC 14 & U Championshipsvenue |
| 200 Backstroke | SCY | 2:19.14 | AA+3.25s to AAA·+20.55s to Sectionals | 2026-03-06 | 2026 MD LSC 14 & U Championshipsvenue |
| 25 Breaststroke | SCY | 27.45 | 2022-03-26 | 2022 Maryland 8 & Under Championship Meetslow pool | |
| 50 Breaststroke | SCY | 37.67 | BB+0.98s to A·+11.38s to Futures | 2026-02-01 | 2026 ASC Senior Meetvenue |
| 100 Breaststroke | SCY | 1:21.43 | BB+3.04s to A·+19.94s to Sectionals | 2026-01-18 | 2026 Fox Winter Invitational Meetvenue |
| 25 Butterfly | SCY | 18.08 | 2024-05-04 | MAC May-hem Mini Meet | |
| 50 Butterfly | SCY | 33.78 | BB+2.59s to A·+10.89s to Futures | 2026-02-01 | 2026 ASC Senior Meetvenue |
| 100 Butterfly | SCY | 1:14.73 | BB+5.44s to A·+21.54s to Sectionals | 2026-01-18 | 2026 Fox Winter Invitational Meetvenue |
| 100 Individual Medley | SCY | 1:16.43 | B+0.54s to BB | 2025-12-07 | 14th Annual Swim & Tri Speedo Winter Champsvenue |
| 200 Individual Medley | SCY | 2:59.47 | +0.18s to B·+60.08s to Sectionals | 2024-03-09 | 2024 Speedo Maryland Junior Championship - Sivenue |
| 50 Freestyle | LCM | 30.59 | AA+1.20s to AAA·+5.10s to Sectionals | 2026-08-01 | 2026 MD LSC LC Championshipvenue |
| 100 Freestyle | LCM | 1:05.58 | AA+1.09s to AAA·+10.09s to Sectionals | 2026-07-29 | 2026 MD LSC LC Championshipvenue |
| 200 Freestyle | LCM | 2:20.36 | AAA+5.97s to AAAA·+19.07s to Sectionals | 2026-07-30 | 2026 MD LSC LC Championshipvenue |
| 400 Freestyle | LCM | 4:49.22 | AAA+3.33s to AAAA·+31.63s to Sectionals | 2026-07-31 | 2026 MD LSC LC Championshipvenue |
| 50 Backstroke | LCM | 35.80 | AA+1.41s to AAA·+7.91s to Futures | 2026-07-31 | 2026 MD LSC LC Championshipvenue |
| 100 Backstroke | LCM | 1:14.71 | AA+0.42s to AAA·+12.72s to Sectionals | 2026-07-30 | 2026 MD LSC LC Championshipvenue |
| 200 Backstroke | LCM | 2:35.49 | AAA+3.30s to AAAA·+20.70s to Sectionals | 2026-07-29 | 2026 MD LSC LC Championshipvenue |
| 50 Breaststroke | LCM | 51.32 | +1.53s to B·+20.43s to Futures | 2024-06-01 | 2024 FOX Speedo Summer Spectacular Meetvenue |
| 100 Breaststroke | LCM | 2:06.26 | +18.47s to B·+56.57s to Sectionals | 2023-01-16 | 2023 Fox Winter Long Course Challengevenue |
| 50 Butterfly | LCM | 38.66 | BB+3.37s to A·+12.37s to Futures | 2025-05-31 | 2025 Fox Speedo Summer Spectacularvenue |
| 100 Butterfly | LCM | 1:19.54 | BB+0.05s to A·+19.35s to Sectionals | 2026-04-12 | 2026 Fox April Long Course Invitationalvenue |
| 200 Individual Medley | LCM | 2:43.26 | AA+4.47s to AAA·+27.07s to Sectionals | 2026-08-01 | 2026 MD LSC LC Championshipvenue |
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 | 27.64 | flat | 200 Free Relay | 2026-03-07 | 2026 MD LSC 14 & U Championships |
| 50 Freestyle | SCY | 28.70 | flying | 200 Free Relay (leg 2) | 2025-12-06 | 14th Annual Swim & Tri Speedo Winter Champs |
| 50 Freestyle | SCY | 27.41 | flying | 200 Medley Relay (leg 4) | 2026-03-05 | 2026 MD LSC 14 & U Championships |
| 100 Freestyle | SCY | 56.94 | flat | 400 Free Relay | 2026-03-08 | 2026 MD LSC 14 & U Championships |
| 100 Freestyle | SCY | 1:10.41 | flying | 400 Free Relay (leg 4) | 2024-03-03 | 2024 MD LSC 14 & U Championships |
| 100 Freestyle | SCY | 59.47 | flying | 400 Medley Relay (leg 4) | 2026-03-06 | 2026 MD LSC 14 & U Championships |
| 50 Backstroke | SCY | 33.86 | flat | 200 Medley Relay | 2025-12-07 | 14th Annual Swim & Tri Speedo Winter Champs |
| 50 Breaststroke | SCY | 45.38 | flying | 200 Medley Relay (leg 2) | 2023-12-08 | 2023 12th Speedo Swim and Tri Winter Champs |
| 100 Breaststroke | SCY | 1:44.59 | flying | 400 Medley Relay (leg 2) | 2023-10-21 | 2023 Fox Fall Invitational 1 |
| 50 Freestyle | LCM | 34.06 | flying | 200 Medley Relay (leg 4) | 2024-08-02 | 2024 MD LSC LC Championships |
| 50 Freestyle | LCM | 34.80 | flying | 200 Free Relay (leg 3) | 2024-08-01 | 2024 MD LSC LC Championships |
| 100 Freestyle | LCM | 1:06.70 | flat | 400 Free Relay | 2026-07-30 | 2026 MD LSC LC Championship |
| 100 Freestyle | LCM | 1:11.14 | flying | 400 Free Relay (leg 3) | 2025-07-31 | 2025 MD LSC LC Championships |
| 100 Breaststroke | LCM | 1:30.37 | flying | 400 Medley Relay (leg 2) | 2026-07-31 | 2026 MD LSC LC Championship |
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
3448 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:49.22 | 965 |
| 100 BK LCM | 1:14.71 | 836 |
| 100 BR LCM | 2:06.26 | 244 |
| 100 FL LCM | 1:19.54 | 619 |
| 200 IM LCM | 2:43.26 | 784 |
IMR 11-12 · LCM
3242 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:20.36 | 877 |
| 50 BK LCM | 35.80 | 754 |
| 50 BR LCM | 51.32 | 347 |
| 50 FL LCM | 38.66 | 480 |
| 200 IM LCM | 2:43.26 | 784 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:00.05
Front half 28.88s · back half 31.17s
200 Freestyle SCY 2:03.86
Front half 60.08s · back half 63.78s
500 Freestyle SCY 5:38.01
Front half 164.83s · back half 173.18s
100 Backstroke SCY 1:04.95
Front half 31.73s · back half 33.22s
200 Backstroke SCY 2:19.14
Front half 68.05s · back half 71.09s
100 Breaststroke SCY 1:21.43
Front half 38.05s · back half 43.38s
100 Butterfly SCY 1:14.73
Front half 34.13s · back half 40.60s
100 Individual Medley SCY 1:16.43 RT 0.75s
Front half 35.66s · back half 40.77s
200 Individual Medley SCY 2:59.47
Front half 84.74s · back half 94.73s
100 Freestyle LCM 1:05.58
Front half 31.48s · back half 34.10s
200 Freestyle LCM 2:20.36
Front half 68.46s · back half 71.90s
400 Freestyle LCM 4:49.22
Front half 141.32s · back half 147.90s
100 Backstroke LCM 1:14.71
Front half 36.73s · back half 37.98s
200 Backstroke LCM 2:35.49
Front half 76.31s · back half 79.18s
100 Breaststroke LCM 2:06.26
Front half 61.89s · back half 64.37s
100 Butterfly LCM 1:19.54
Front half 36.29s · back half 43.25s
200 Individual Medley LCM 2:43.26
Front half 76.96s · back half 86.30s
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.