Mark Zheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.56 | +1.67s to B·+9.17s to Sectionals | 2025-10-18 | CAA Early Season Mini & Mid Distance Meet |
| 100 Freestyle | SCY | 1:12.18 | +7.09s to B·+23.69s to Sectionals | 2025-02-15 | 2025 MAC Fabulous February 'B' & Mini Meetvenue |
| 200 Freestyle | SCY | 2:44.91 | +22.32s to B·+58.62s to Sectionals | 2023-12-03 | 2023 NAAC Holiday Blastvenue |
| 50 Backstroke | SCY | 35.45 | +1.76s to B·+11.76s to Futures | 2025-10-18 | CAA Early Season Mini & Mid Distance Meet |
| 100 Backstroke | SCY | 1:19.92 | +8.53s to B·+25.43s to Sectionals | 2025-02-16 | 2025 MAC Fabulous February 'B' & Mini Meetvenue |
| 50 Breaststroke | SCY | 44.62 | +6.03s to B·+18.33s to Futures | 2025-10-18 | CAA Early Season Mini & Mid Distance Meet |
| 100 Breaststroke | SCY | 1:39.56 | +18.97s to B·+38.07s to Sectionals | 2025-02-16 | 2025 MAC Fabulous February 'B' & Mini Meetvenue |
| 50 Butterfly | SCY | 37.57 | +4.38s to B·+14.68s to Futures | 2025-10-18 | CAA Early Season Mini & Mid Distance Meet |
| 100 Individual Medley | SCY | 1:20.74 | 2025-10-18 | CAA Early Season Mini & Mid Distance Meet | |
| 200 Individual Medley | SCY | 3:05.49 | +27.50s to B·+66.10s to Sectionals | 2025-02-15 | 2025 MAC Fabulous February 'B' & Mini Meetvenue |
| 50 Freestyle | LCM | 41.18 | +6.89s to B·+15.69s to Sectionals | 2024-05-11 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
| 100 Freestyle | LCM | 1:28.58 | +13.49s to B·+33.09s to Sectionals | 2024-05-11 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
| 200 Freestyle | LCM | 3:08.55 | +24.56s to B·+67.26s to Sectionals | 2024-05-12 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
| 100 Backstroke | LCM | 1:41.87 | +18.18s to B·+39.88s to Sectionals | 2024-05-12 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
| 200 Backstroke | LCM | 3:57.33 | +55.34s to B·+102.54s to Sectionals | 2023-07-22 | MAC-EST End of Summer Splashslow pool |
| 50 Breaststroke | LCM | 50.97 | +6.88s to B·+20.08s to Futures | 2024-05-12 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
| 100 Breaststroke | LCM | 2:01.82 | +27.83s to B·+52.13s to Sectionals | 2024-05-11 | 2024 John C. Clegg Memorial Long Course Meetslow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 14.
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 | 36.33 | flying | 200 Free Relay (leg 4) | 2024-03-16 | 2024 NBAC / MD LSC 11 & Over B Championships |
| 50 Breaststroke | SCY | 47.34 | flying | 200 Medley Relay (leg 2) | 2024-03-17 | 2024 NBAC / MD LSC 11 & Over B Championships |
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 13-14 · SCY
260 points (1/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 IM SCY | 3:05.49 | 260 |
| 500 FR SCY | — | 0 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 13-14 · SCY
1054 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:44.91 | 272 |
| 100 BK SCY | 1:19.92 | 299 |
| 100 BR SCY | 1:39.56 | 223 |
| 200 IM SCY | 3:05.49 | 260 |
| 100 FL SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:12.18
Front half 33.94s · back half 38.24s
200 Freestyle SCY 2:44.91
Front half 82.41s · back half 82.50s
100 Backstroke SCY 1:19.92
Front half 37.98s · back half 41.94s
100 Breaststroke SCY 1:39.56
Front half 43.70s · back half 55.86s
200 Individual Medley SCY 3:05.49
Front half 88.90s · back half 96.59s
100 Freestyle LCM 1:28.58
Front half 42.59s · back half 45.99s
200 Freestyle LCM 3:08.55
Front half 92.28s · back half 96.27s
100 Backstroke LCM 1:41.87
Front half 48.48s · back half 53.39s
200 Backstroke LCM 3:57.33
100 Breaststroke LCM 2:01.82
Front half 52.95s · back half 68.87s
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.