swimMason Cheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 30.49 | BB+0.40s to A·+7.30s to Sectionals | 2026-03-07 | 2026 SI 14U AGE GRP CHAMPIONSHIPSvenue |
| 100 Freestyle | SCY | 1:10.70 | B+0.11s to BB·+19.71s to Sectionals | 2026-02-01 | 2026 SI HSA All Ages NTS Meetfast pool |
| 200 Freestyle | SCY | 2:36.80 | B+2.11s to BB·+45.01s to Sectionals | 2026-07-12 | 2026 SI JBST All Ages Last Chance Meetvenue |
| 50 Backstroke | SCY | 38.24 | B+0.15s to BB·+14.55s to Futures | 2026-07-12 | 2026 SI JBST All Ages Last Chance Meetvenue |
| 100 Backstroke | SCY | 1:28.75 | B+6.06s to BB·+33.26s to Sectionals | 2026-02-21 | 2026 SI MRA Age Group Champs Max Meetvenue |
| 50 Breaststroke | SCY | 42.45 | BB+2.96s to A·+16.16s to Futures | 2026-07-11 | 2026 SI JBST All Ages Last Chance Meetvenue |
| 100 Breaststroke | SCY | 1:38.95 | B+6.36s to BB·+35.76s to Sectionals | 2026-02-21 | 2026 SI MRA Age Group Champs Max Meetvenue |
| 50 Butterfly | SCY | 36.20 | BB+2.51s to A·+13.31s to Futures | 2026-01-31 | 2026 SI HSA All Ages NTS Meetfast pool |
| 100 Butterfly | SCY | 1:33.43 | +2.94s to B·+38.24s to Sectionals | 2026-02-22 | 2026 SI MRA Age Group Champs Max Meetvenue |
| 100 Individual Medley | SCY | 1:20.64 | BB+5.35s to A | 2026-03-21 | 2026 SI CAST All Ages NTS Meet North |
| 200 Individual Medley | SCY | 2:55.95 | BB+12.26s to A·+51.96s to Sectionals | 2026-07-11 | 2026 SI JBST All Ages Last Chance Meetvenue |
| 50 Freestyle | LCM | 34.59 | BB+0.40s to A·+7.60s to Sectionals | 2026-07-23 | 2026 SI LC AGE GROUP CHAMPIONSHIPSvenue |
| 100 Freestyle | LCM | 1:21.31 | BB+6.02s to A·+22.32s to Sectionals | 2026-06-19 | 2026 SI Splash and Dashfast pool |
| 200 Freestyle | LCM | 3:01.68 | B+5.49s to BB·+52.99s to Sectionals | 2026-06-27 | 2026 SI MRA LC Distance Meetvenue |
| 50 Backstroke | LCM | 42.68 | BB+2.39s to A·+14.79s to Futures | 2026-05-23 | SI 2026 TAC CSTE All Ages NTS Meetslow pool |
| 100 Backstroke | LCM | 1:36.24 | BB+8.05s to A·+31.05s to Sectionals | 2026-05-23 | SI 2026 TAC CSTE All Ages NTS Meetslow pool |
| 50 Breaststroke | LCM | 48.99 | BB+4.00s to A·+18.10s to Futures | 2026-06-19 | 2026 SI Splash and Dashfast pool |
| 200 Breaststroke | LCM | 3:52.09 | B+2.10s to BB·+71.21s to Sectionals | 2026-06-27 | 2026 SI MRA LC Distance Meetvenue |
| 50 Butterfly | LCM | 36.63 | A+0.44s to AA·+10.34s to Futures | 2026-05-23 | SI 2026 TAC CSTE All Ages NTS Meetslow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
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 | LCM | 40.11 | flying | 200 Free Relay (leg 3) | 2025-07-25 | 2025 SI LC AG CHAMPS |
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
1297 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:28.75 | 301 |
| 100 BR SCY | 1:38.95 | 321 |
| 100 FL SCY | 1:33.43 | 252 |
| 200 IM SCY | 2:55.95 | 423 |
| 500 FR SCY | — | 0 |
IMR 11-12 · SCY
2057 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:36.80 | 415 |
| 50 BK SCY | 38.24 | 400 |
| 50 BR SCY | 42.45 | 408 |
| 50 FL SCY | 36.20 | 400 |
| 100 IM SCY | 1:20.64 | 434 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:36.80
Front half 73.31s · back half 83.49s
100 Backstroke SCY 1:28.75
Front half 42.94s · back half 45.81s
100 Breaststroke SCY 1:38.95
Front half 45.77s · back half 53.18s
100 Butterfly SCY 1:33.43
Front half 40.48s · back half 52.95s
200 Individual Medley SCY 2:55.95
Front half 81.57s · back half 94.38s
100 Freestyle LCM 1:21.31
Front half 38.78s · back half 42.53s
200 Freestyle LCM 3:01.68
Front half 87.75s · back half 93.93s
100 Backstroke LCM 1:36.24 · 14.0 min after 50 Freestyle
Front half 45.94s · back half 50.30s
200 Breaststroke LCM 3:52.09 · 17.2 min after 200 Freestyle
Front half 110.00s · back half 122.09s
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.