Mason Chi
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 28.04 | A+1.05s to AA·+4.85s to Sectionals | 2026-06-26 | 2026 CA SPAR Surprise Summer Intersquad - copvenue |
| 100 Freestyle | SCY | 1:07.27 | B+0.88s to BB·+16.28s to Sectionals | 2025-09-21 | 2025 TSM Aquatics Season Openervenue |
| 200 Freestyle | SCY | 2:29.84 | B+4.95s to BB·+38.05s to Sectionals | 2025-11-22 | 2025 CANY Cranberryvenue |
| 50 Backstroke | SCY | 31.07 | AA+1.38s to AAA·+7.38s to Futures | 2026-02-28 | 2026 Pacific Committee SC Chmpionshipvenue |
| 100 Backstroke | SCY | 1:06.57 | A+0.58s to AA·+11.08s to Sectionals | 2025-12-12 | 2025 CA SCS/SCAT WAGvenue |
| 200 Backstroke | SCY | 2:27.65 | A+5.66s to AA·+26.36s to Sectionals | 2026-01-16 | 2026 Rose Winter Intrasquadvenue |
| 50 Breaststroke | SCY | 35.39 | A+0.40s to AA·+9.10s to Futures | 2026-06-26 | 2026 CA SPAR Surprise Summer Intersquad - copvenue |
| 100 Breaststroke | SCY | 1:22.53 | BB+4.14s to A·+19.34s to Sectionals | 2026-02-27 | 2026 Pacific Committee SC Chmpionshipvenue |
| 200 Breaststroke | SCY | 2:50.59 | BB+2.20s to A·+33.30s to Sectionals | 2026-06-26 | 2026 CA SPAR Surprise Summer Intersquad - copvenue |
| 50 Butterfly | SCY | 33.94 | BB+2.75s to A·+11.05s to Futures | 2026-01-17 | 2026 Rose Winter Intrasquadvenue |
| 100 Butterfly | SCY | 1:17.82 | B+1.73s to BB·+22.63s to Sectionals | 2025-02-21 | 2025 Pacific Committee SC Championshipvenue |
| 100 Individual Medley | SCY | 1:11.79 | BB+1.80s to A | 2026-02-28 | 2026 Pacific Committee SC Chmpionshipvenue |
| 200 Individual Medley | SCY | 2:40.29 | BB+8.00s to A·+36.30s to Sectionals | 2025-11-23 | 2025 CANY Cranberryvenue |
| 50 Freestyle | LCM | 32.32 | BB+0.23s to A·+5.33s to Sectionals | 2026-06-07 | 2026 BCA June LC Meetvenue |
| 100 Freestyle | LCM | 1:12.95 | BB+2.56s to A·+13.96s to Sectionals | 2026-06-06 | 2026 BCA June LC Meetvenue |
| 200 Freestyle | LCM | 2:42.40 | BB+8.81s to A·+33.71s to Sectionals | 2026-06-07 | 2026 BCA June LC Meetvenue |
| 400 Freestyle | LCM | 5:55.53 | B+1.54s to BB·+81.14s to Sectionals | 2026-04-23 | Rose Spring LCM Intrasquadvenue |
| 50 Backstroke | LCM | 34.66 | AA+0.27s to AAA·+6.77s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 100 Backstroke | LCM | 1:14.70 | AA+0.41s to AAA·+9.51s to Sectionals | 2026-07-23 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 200 Backstroke | LCM | 2:45.75 | AA+6.26s to AAA·+24.26s to Sectionals | 2026-06-06 | 2026 BCA June LC Meetvenue |
| 50 Breaststroke | LCM | 39.10 | AA+1.01s to AAA·+8.21s to Futures | 2026-07-24 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 100 Breaststroke | LCM | 1:27.98 | A+0.79s to AA·+14.28s to Sectionals | 2026-07-10 | 2026 Summer Pacific Champs @BLAST - copied -venue |
| 50 Butterfly | LCM | 36.81 | BB+1.52s to A·+10.52s to Futures | 2026-05-02 | 2026 TORR May Spring Splashvenue |
| 100 Butterfly | LCM | 1:32.68 | B+5.39s to BB·+29.59s to Sectionals | 2025-05-04 | 2025 CA TORR Spring Splashvenue |
| 200 Individual Medley | LCM | 2:58.00 | BB+3.81s to A·+33.31s to Sectionals | 2026-04-24 | Rose Spring LCM Intrasquadvenue |
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 | 28.17 | flying | 200 Free Relay (leg 2) | 2026-02-28 | 2026 Pacific Committee SC Chmpionship |
| 100 Freestyle | SCY | 1:03.85 | flying | 400 Free Relay (leg 3) | 2026-03-13 | 2026 SCS Spring Age Group Champs @ RMDA - cop |
| 50 Backstroke | SCY | 31.44 | flat | 200 Medley Relay | 2026-02-28 | 2026 Pacific Committee SC Chmpionship |
| 100 Backstroke | SCY | 1:07.54 | flat | 400 Medley Relay | 2026-02-27 | 2026 Pacific Committee SC Chmpionship |
| 50 Freestyle | LCM | 30.26 | flying | 200 Free Relay (leg 2) | 2026-07-24 | 2026 CA SCS Summer A/G Champs @ BREA |
| 100 Freestyle | LCM | 1:09.95 | flying | 400 Free Relay (leg 3) | 2026-07-26 | 2026 CA SCS Summer A/G Champs @ BREA |
| 50 Backstroke | LCM | 35.45 | flat | 200 Medley Relay | 2026-07-24 | 2026 CA SCS Summer A/G Champs @ BREA |
| 100 Backstroke | LCM | 1:15.78 | flat | 400 Medley Relay | 2026-07-25 | 2026 CA SCS Summer A/G Champs @ BREA |
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
3074 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 5:55.53 | 519 |
| 100 BK LCM | 1:14.70 | 836 |
| 100 BR LCM | 1:27.98 | 723 |
| 100 FL LCM | 1:32.68 | 391 |
| 200 IM LCM | 2:58.00 | 605 |
IMR 11-12 · LCM
3345 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:42.40 | 566 |
| 50 BK LCM | 34.66 | 831 |
| 50 BR LCM | 39.10 | 786 |
| 50 FL LCM | 36.81 | 557 |
| 200 IM LCM | 2:58.00 | 605 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:07.27
Front half 32.86s · back half 34.41s
200 Freestyle SCY 2:29.84
Front half 71.08s · back half 78.76s
100 Backstroke SCY 1:06.57
Front half 31.88s · back half 34.69s
200 Backstroke SCY 2:27.65
Front half 71.99s · back half 75.66s
100 Breaststroke SCY 1:22.53
Front half 39.36s · back half 43.17s
200 Breaststroke SCY 2:50.59
Front half 83.87s · back half 86.72s
100 Butterfly SCY 1:17.82
Front half 35.98s · back half 41.84s
100 Individual Medley SCY 1:11.79
Front half 32.44s · back half 39.35s
200 Individual Medley SCY 2:40.29
Front half 71.52s · back half 88.77s
200 Freestyle LCM 2:42.40
Front half 78.76s · back half 83.64s
400 Freestyle LCM 5:55.53
Front half 173.91s · back half 181.62s
100 Backstroke LCM 1:14.70 RT 0.78s
Front half 37.07s · back half 37.63s
200 Backstroke LCM 2:45.75
Front half 80.23s · back half 85.52s
200 Individual Medley LCM 2:58.00
Front half 84.36s · back half 93.64s
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.