swimMason Zhu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.22 | BB+0.53s to A·+2.03s to Sectionals | 2025-10-11 | CA 2025 NOVA October Intrasquad Meet venue |
| 100 Freestyle | SCY | 54.96 | BB+0.67s to A·+3.97s to Sectionals | 2025-11-23 | 2025 Southern Pacific Invite venue |
| 200 Freestyle | SCY | 2:00.19 | BB+1.60s to A·+8.40s to Sectionals | 2025-11-01 | 2025 "Our Rising Tides" 16u SCY P/F Meet venue |
| 500 Freestyle | SCY | 5:42.52 | BB+19.93s to A·+39.83s to Sectionals | 2025-11-15 | Nova Senior Racing Series #2 venue |
| 50 Backstroke | SCY | 29.10 | BB+1.11s to A·+5.41s to Futures | 2025-09-20 | CA 2025 NOVA Back-to-School Meet venue |
| 100 Backstroke | SCY | 59.85 | BB+0.26s to A·+4.36s to Sectionals | 2026-01-24 | CA 2026 Senior Racing Series Championships venue |
| 50 Breaststroke | SCY | 28.95 | AAA+0.86s to AAAA·+2.66s to Futures | 2026-01-17 | YARDS----2026 Road to Sofi venue |
| 100 Breaststroke | SCY | 1:01.57 | AAA+2.58s to AAAA·Sectionals ✓+3.58s to Futures | 2025-12-12 | 2025 CA SCS/SCAT WAG venue |
| 200 Breaststroke | SCY | 2:13.14 | AAA+4.55s to AAAA·Sectionals ✓+5.15s to Futures | 2026-02-28 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 50 Butterfly | SCY | 26.15 | AA+0.76s to AAA·+3.26s to Futures | 2025-09-20 | CA 2025 NOVA Back-to-School Meet venue |
| 100 Butterfly | SCY | 56.04 | AA+2.05s to AAA·+0.85s to Sectionals | 2026-01-17 | YARDS----2026 Road to Sofi venue |
| 200 Butterfly | SCY | 2:07.10 | A+0.61s to AA·+3.71s to Sectionals | 2026-07-06 | CA 2026 NOVA July Intrasquad Meet venue |
| 100 Individual Medley | SCY | 1:00.43 | 2025-09-20 | CA 2025 NOVA Back-to-School Meet venue | |
| 200 Individual Medley | SCY | 2:05.57 | AA+4.38s to AAA·+1.58s to Sectionals | 2026-01-24 | CA 2026 Senior Racing Series Championships venue |
| 400 Individual Medley | SCY | 4:33.39 | A+1.00s to AA·+8.70s to Sectionals | 2026-01-25 | CA 2026 Senior Racing Series Championships venue |
| 50 Freestyle | LCM | 29.20 | BB+0.61s to A·+2.21s to Sectionals | 2026-05-16 | CA 2026 NOVA May LC Intrasquad Meet venue |
| 200 Freestyle | LCM | 2:22.47 | BB+5.28s to A·+13.78s to Sectionals | 2025-06-12 | 2025 June Age Group Invite venue |
| 50 Breaststroke | LCM | 32.90 | AAA+0.91s to AAAA·+2.01s to Futures | 2026-06-12 | 2026 SCS June AG Invite venue |
| 100 Breaststroke | LCM | 1:10.82 | AAA+2.23s to AAAA·Sectionals ✓+2.63s to Futures | 2026-06-13 | 2026 SCS June AG Invite venue |
| 200 Breaststroke | LCM | 2:35.32 | AAA+5.33s to AAAA·Sectionals ✓+6.23s to Futures | 2025-07-11 | 2025 LAI Entries venue |
| 50 Butterfly | LCM | 28.67 | AAA+1.28s to AAAA·+2.38s to Futures | 2026-06-13 | 2026 SCS June AG Invite venue |
| 100 Butterfly | LCM | 1:03.90 | AA+2.21s to AAA·+0.81s to Sectionals | 2026-06-11 | 2026 SCS June AG Invite venue |
| 200 Butterfly | LCM | 2:32.53 | BB+1.94s to A·+11.44s to Sectionals | 2025-07-23 | 2025 CA SCS Summer A/G Champs |
| 200 Individual Medley | LCM | 2:23.54 | AA+3.05s to AAA·Sectionals ✓+10.75s to Futures | 2026-06-12 | 2026 SCS June AG Invite venue |
| 400 Individual Medley | LCM | 5:11.50 | AA+9.61s to AAA·+3.71s to Sectionals | 2026-06-11 | 2026 SCS June AG Invite venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Breaststroke | LCM | 33.39 | flying | 200 Medley Relay (leg 2) | 2025-07-19 | 2025 SCS 14-Under Elite A/G Champs at MVN |
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 15-16 · SCY
3475 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:42.52 | 524 |
| 200 BR SCY | 2:13.14 | 833 |
| 200 FL SCY | 2:07.10 | 696 |
| 200 IM SCY | 2:05.57 | 732 |
| 400 IM SCY | 4:33.39 | 690 |
| 200 BK SCY | — | 0 |
IMR 15-16 · SCY
3499 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:00.19 | 611 |
| 100 BK SCY | 59.85 | 607 |
| 100 BR SCY | 1:01.57 | 822 |
| 100 FL SCY | 56.04 | 727 |
| 200 IM SCY | 2:05.57 | 732 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 54.96
Front half 26.45s · back half 28.51s
200 Freestyle SCY 2:00.19
Front half 56.53s · back half 63.66s
100 Backstroke SCY 59.85
Front half 29.19s · back half 30.66s
100 Breaststroke SCY 1:01.57
Front half 29.66s · back half 31.91s
200 Breaststroke SCY 2:13.14
Front half 65.29s · back half 67.85s
100 Butterfly SCY 56.04
Front half 26.72s · back half 29.32s
200 Butterfly SCY 2:07.10
Front half 61.09s · back half 66.01s
100 Individual Medley SCY 1:00.43
Front half 29.24s · back half 31.19s
200 Individual Medley SCY 2:05.57
Front half 60.33s · back half 65.24s
400 Individual Medley SCY 4:33.39
Front half 135.08s · back half 138.31s
200 Freestyle LCM 2:22.47
Front half 70.53s · back half 71.94s
100 Breaststroke LCM 1:10.82
Front half 33.90s · back half 36.92s
200 Breaststroke LCM 2:35.32
Front half 74.74s · back half 80.58s
100 Butterfly LCM 1:03.90
Front half 29.87s · back half 34.03s
200 Butterfly LCM 2:32.53 RT 0.63s
Front half 70.31s · back half 82.22s
200 Individual Medley LCM 2:23.54
Front half 69.93s · back half 73.61s
400 Individual Medley LCM 5:11.50
Front half 154.79s · back half 156.71s
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.
Progression
Faster times are higher. One card per event, all courses & history.