Zachary Ma
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.33 | AA+0.94s to AAA | 2026-03-06 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 100 Freestyle | SCY | 54.95 | AA+1.86s to AAA | 2026-03-08 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 200 Freestyle | SCY | 2:05.40 | A+4.01s to AA | 2025-11-08 | 2025 THSC November Open venue |
| 500 Freestyle | SCY | 5:23.43 | AA+10.14s to AAA | 2026-03-06 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 1650 Freestyle | SCY | 20:49.64 | BB+60.35s to A | 2025-01-04 | 2025 THSC Animal Meet venue |
| 50 Backstroke | SCY | 33.40 | B+0.51s to BB | 2024-12-08 | 2024 Tualatin Hills Holiday Classic venue |
| 100 Backstroke | SCY | 1:07.34 | BB+3.55s to A | 2026-01-17 | 2026 THSC 14&U Winter Showcase venue |
| 200 Backstroke | SCY | 2:22.52 | BB+3.53s to A | 2025-11-09 | 2025 THSC November Open venue |
| 50 Breaststroke | SCY | 36.98 | BB+2.29s to A | 2024-11-10 | 2024 THSC November Invitational venue |
| 100 Breaststroke | SCY | 1:07.84 | AA+1.55s to AAA | 2026-03-08 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 200 Breaststroke | SCY | 2:27.45 | AA+3.66s to AAA | 2026-03-21 | 2026 NW Region Age Group Champs- Approved venue |
| 50 Butterfly | SCY | 31.14 | BB+1.45s to A | 2025-08-02 | 2025 Season Finale venue |
| 100 Butterfly | SCY | 1:09.29 | B+0.80s to BB | 2025-12-05 | 2025 Tualatin Hills Holiday Classic venue |
| 200 Butterfly | SCY | 2:41.81 | B+8.32s to BB | 2025-01-04 | 2025 THSC Animal Meet venue |
| 100 Individual Medley | SCY | 1:10.05 | 2025-03-01 | 2025 OSI Arena SC 11-14 Champs fast pool | |
| 200 Individual Medley | SCY | 2:14.50 | AA+5.11s to AAA | 2026-03-06 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 400 Individual Medley | SCY | 4:48.63 | AA+11.44s to AAA | 2026-03-07 | 2026 OSI Arena SC 11-14 Champs fast pool |
| 50 Freestyle | LCM | 29.26 | AA+1.27s to AAA | 2026-05-24 | 2026 THSC Memorial Weekend Meet venue |
| 100 Freestyle | LCM | 1:03.65 | AA+2.16s to AAA | 2026-06-13 | 2026 THSC June Open venue |
| 200 Freestyle | LCM | 2:18.19 | AA+4.60s to AAA | 2026-05-23 | 2026 THSC Memorial Weekend Meet venue |
| 400 Freestyle | LCM | 4:50.55 | AA+7.76s to AAA | 2026-05-22 | 2026 THSC Memorial Weekend Meet venue |
| 800 Freestyle | LCM | 10:37.13 | A+19.94s to AA | 2025-06-26 | 2025 Howard Jones Open venue |
| 1500 Freestyle | LCM | 20:04.71 | A+22.72s to AA | 2025-06-26 | 2025 Howard Jones Open venue |
| 50 Backstroke | LCM | 37.48 | BB+2.09s to A | 2025-07-13 | 2025 THSC Summer Classic venue |
| 100 Backstroke | LCM | 1:12.89 | A+1.10s to AA | 2026-05-23 | 2026 THSC Memorial Weekend Meet venue |
| 200 Backstroke | LCM | 2:39.89 | A+4.00s to AA | 2026-05-24 | 2026 THSC Memorial Weekend Meet venue |
| 50 Breaststroke | LCM | 36.01 | AAA+1.52s to AAAA | 2026-05-03 | 2026 THSC Spring Invite venue |
| 100 Breaststroke | LCM | 1:19.79 | AA+3.40s to AAA | 2026-06-13 | 2026 THSC June Open venue |
| 200 Breaststroke | LCM | 2:54.12 | AA+6.43s to AAA | 2026-05-23 | 2026 THSC Memorial Weekend Meet venue |
| 50 Butterfly | LCM | 35.09 | BB+1.60s to A | 2025-06-28 | 2025 Howard Jones Open venue |
| 100 Butterfly | LCM | 1:17.56 | BB+5.47s to A | 2026-05-02 | 2026 THSC Spring Invite venue |
| 200 Butterfly | LCM | 2:55.40 | BB+13.41s to A | 2026-06-13 | 2026 THSC June Open venue |
| 200 Individual Medley | LCM | 2:32.17 | AA+2.58s to AAA | 2026-06-14 | 2026 THSC June Open venue |
| 400 Individual Medley | LCM | 5:28.80 | AA+9.21s to AAA | 2026-06-26 | 2026 PN SMAC Summer Classic Invite- Approved venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.
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 |
|---|---|---|---|---|---|---|
| 100 Freestyle | SCY | 1:07.08 | flying | 400 Free Relay (leg 3) | 2025-01-20 | 2025 Thunderbolt Round Robin Invitational |
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 · LCM
3904 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:50.55 | 727 |
| 200 BK LCM | 2:39.89 | 619 |
| 200 BR LCM | 2:54.12 | 666 |
| 200 FL LCM | 2:55.40 | 453 |
| 200 IM LCM | 2:32.17 | 732 |
| 400 IM LCM | 5:28.80 | 707 |
IMR 13-14 · LCM
3227 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:18.19 | 704 |
| 100 BK LCM | 1:12.89 | 639 |
| 100 BR LCM | 1:19.79 | 683 |
| 100 FL LCM | 1:17.56 | 469 |
| 200 IM LCM | 2:32.17 | 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 54.95
Front half 26.33s · back half 28.62s
200 Freestyle SCY 2:05.40
Front half 60.48s · back half 64.92s
500 Freestyle SCY 5:23.43
Front half 159.98s · back half 163.45s
100 Backstroke SCY 1:07.34
Front half 32.44s · back half 34.90s
200 Backstroke SCY 2:22.52
Front half 69.22s · back half 73.30s
100 Breaststroke SCY 1:07.84
Front half 31.43s · back half 36.41s
200 Breaststroke SCY 2:27.45 RT 0.75s
Front half 69.67s · back half 77.78s
100 Butterfly SCY 1:09.29
Front half 32.57s · back half 36.72s
100 Individual Medley SCY 1:10.05
Front half 32.11s · back half 37.94s
200 Individual Medley SCY 2:14.50
Front half 64.46s · back half 70.04s
400 Individual Medley SCY 4:48.63
Front half 138.97s · back half 149.66s
100 Freestyle LCM 1:03.65
Front half 30.49s · back half 33.16s
200 Freestyle LCM 2:18.19
Front half 65.86s · back half 72.33s
400 Freestyle LCM 4:50.55
Front half 141.60s · back half 148.95s
1500 Freestyle LCM 20:04.71
Front half 595.69s · back half 609.02s
100 Backstroke LCM 1:12.89
Front half 35.06s · back half 37.83s
200 Backstroke LCM 2:39.89
Front half 77.92s · back half 81.97s
100 Breaststroke LCM 1:19.79
Front half 38.21s · back half 41.58s
200 Breaststroke LCM 2:54.12
Front half 82.48s · back half 91.64s
100 Butterfly LCM 1:17.56
Front half 34.94s · back half 42.62s
200 Butterfly LCM 2:55.40
Front half 79.67s · back half 95.73s
200 Individual Medley LCM 2:32.17
Front half 72.80s · back half 79.37s
400 Individual Medley LCM 5:28.80 RT 0.75s
Front half 161.35s · back half 167.45s
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.