Zachary Chou
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.25 | AA+0.56s to AAA·+0.06s to Sectionals | 2026-02-15 | 2026 Metro Champs @ La Mirada Armadavenue |
| 100 Freestyle | SCY | 50.68 | AA+0.89s to AAA·Sectionals ✓+4.29s to Futures | 2025-12-14 | 2025 CA SCS/RAA WAGvenue |
| 200 Freestyle | SCY | 1:54.10 | A+0.51s to AA·+2.31s to Sectionals | 2025-03-15 | 2025 SCS Spring Age Group Champs @ Armadavenue |
| 500 Freestyle | SCY | 5:29.34 | BB+6.75s to A·+26.65s to Sectionals | 2024-11-09 | 2024 Downey Dolphins SC Meetvenue |
| 100 Backstroke | SCY | 1:02.17 | BB+2.58s to A·+6.68s to Sectionals | 2025-10-12 | 2025 CA Cerritos SC Swim Meetvenue |
| 200 Backstroke | SCY | 2:13.39 | BB+3.30s to A·+12.10s to Sectionals | 2025-12-13 | 2025 CA SCS/RAA WAGvenue |
| 100 Breaststroke | SCY | 1:14.62 | B+1.63s to BB·+11.43s to Sectionals | 2025-02-16 | 2025 Metro Sc Champs at Armadavenue |
| 50 Butterfly | SCY | 26.15 | AA+0.76s to AAA·+3.26s to Futures | 2026-03-08 | 2026 CA Arcadia Riptides "Last Ditch" Meetvenue |
| 100 Butterfly | SCY | 57.80 | A+1.41s to AA·+2.61s to Sectionals | 2025-11-22 | 2025 CA Fast Before The Feastslow pool |
| 200 Butterfly | SCY | 2:14.24 | BB+2.25s to A·+10.85s to Sectionals | 2026-01-19 | 2026 CA Trident Swim Club Winter Invite - copvenue |
| 200 Individual Medley | SCY | 2:11.23 | A+4.54s to AA·+7.24s to Sectionals | 2025-11-23 | 2025 CA Fast Before The Feastslow pool |
| 400 Individual Medley | SCY | 4:52.93 | BB+8.74s to A·+28.24s to Sectionals | 2026-01-18 | 2026 CA Trident Swim Club Winter Invite - copvenue |
| 50 Freestyle | LCM | 25.60 | AAA+0.61s to AAAA·Sectionals ✓+1.01s to Futures | 2026-07-19 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 100 Freestyle | LCM | 56.97 | AAA+2.48s to AAAA·Sectionals ✓+3.38s to Futures | 2026-07-16 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 200 Freestyle | LCM | 2:14.06 | A+2.57s to AA·+5.37s to Sectionals | 2025-07-24 | 2025 CA SCS Summer A/G Champs |
| 400 Freestyle | LCM | 5:06.36 | BB+14.27s to A·+31.97s to Sectionals | 2025-04-26 | 2025 Lakewood Aquatics April LC Closed Inviteslow pool |
| 50 Backstroke | LCM | 31.42 | AA+1.03s to AAA·+3.53s to Futures | 2026-04-11 | Armada Lc April Meet -April 11-12-2026venue |
| 100 Backstroke | LCM | 1:11.14 | BB+1.55s to A·+5.95s to Sectionals | 2025-07-26 | 2025 CA SCS Summer A/G Champs |
| 200 Backstroke | LCM | 2:45.72 | B+2.03s to BB·+24.23s to Sectionals | 2025-04-26 | 2025 Lakewood Aquatics April LC Closed Inviteslow pool |
| 50 Butterfly | LCM | 27.30 | AAAA·+1.01s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champsvenue |
| 100 Butterfly | LCM | 1:01.66 | AAA+2.77s to AAAA·Sectionals ✓+3.67s to Futures | 2026-06-11 | ARMADA-2026 SCS June AG Invitevenue |
| 200 Individual Medley | LCM | 2:32.36 | A+5.47s to AA·+7.67s to Sectionals | 2026-04-12 | Armada Lc April Meet -April 11-12-2026venue |
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.
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 | 23.59 | flat | 200 Free Relay | 2024-12-14 | 2024 CA SCAT/SCS WAG |
| 50 Freestyle | SCY | 22.74 | flying | 200 Free Relay (leg 2) | 2025-12-12 | 2025 CA SCS/RAA WAG |
| 50 Freestyle | SCY | 22.40 | flying | 200 Medley Relay (leg 4) | 2026-02-15 | 2026 Metro Champs @ La Mirada Armada |
| 100 Freestyle | SCY | 51.45 | flying | 400 Free Relay (leg 2) | 2024-12-15 | 2024 CA SCAT/SCS WAG |
| 50 Butterfly | SCY | 26.53 | flying | 200 Medley Relay (leg 3) | 2025-03-16 | 2025 SCS Spring Age Group Champs @ Armada |
| 50 Freestyle | LCM | 25.98 | flat | 200 Free Relay | 2026-06-11 | ARMADA-2026 SCS June AG Invite |
| 50 Freestyle | LCM | 25.49 | flying | 200 Medley Relay (leg 4) | 2026-07-24 | 2026 CA SCS Summer A/G Champs |
| 100 Freestyle | LCM | 57.87 | flying | 400 Free Relay (leg 3) | 2026-07-26 | 2026 CA SCS Summer A/G Champs |
| 100 Freestyle | LCM | 57.69 | flying | 400 Medley Relay (leg 4) | 2026-07-25 | 2026 CA SCS Summer A/G 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 15-16 · SCY
2953 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:29.34 | 590 |
| 200 BK SCY | 2:13.39 | 571 |
| 200 FL SCY | 2:14.24 | 591 |
| 200 IM SCY | 2:11.23 | 641 |
| 400 IM SCY | 4:52.93 | 560 |
| 200 BR SCY | — | 0 |
IMR 15-16 · SCY
3021 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:54.10 | 714 |
| 100 BK SCY | 1:02.17 | 542 |
| 100 BR SCY | 1:14.62 | 462 |
| 100 FL SCY | 57.80 | 662 |
| 200 IM SCY | 2:11.23 | 641 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.68
Front half 24.44s · back half 26.24s
200 Freestyle SCY 1:54.10
Front half 55.18s · back half 58.92s
100 Backstroke SCY 1:02.17
Front half 30.78s · back half 31.39s
200 Backstroke SCY 2:13.39
Front half 64.24s · back half 69.15s
100 Breaststroke SCY 1:14.62
Front half 35.37s · back half 39.25s
100 Butterfly SCY 57.80
Front half 27.38s · back half 30.42s
200 Butterfly SCY 2:14.24
Front half 62.39s · back half 71.85s
200 Individual Medley SCY 2:11.23
Front half 62.31s · back half 68.92s
400 Individual Medley SCY 4:52.93
Front half 139.69s · back half 153.24s
100 Freestyle LCM 56.97 RT 0.62s
Front half 27.30s · back half 29.67s
200 Freestyle LCM 2:14.06 RT 0.63s
Front half 64.12s · back half 69.94s
400 Freestyle LCM 5:06.36
Front half 152.02s · back half 154.34s
200 Backstroke LCM 2:45.72
Front half 82.50s · back half 83.22s
200 Individual Medley LCM 2:32.36
Front half 71.61s · back half 80.75s
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.