Marissa Chu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 28.48 | A+0.29s to AA | 2025-10-19 | 2025 MR WEST Tricia Dewey Tails of Hope venue |
| 100 Freestyle | SCY | 1:03.09 | A+1.70s to AA | 2026-01-24 | 2026 MR PAC Winter Classic Invitational venue |
| 200 Freestyle | SCY | 2:15.63 | A+1.44s to AA | 2025-10-18 | 2025 MR WEST Tricia Dewey Tails of Hope venue |
| 500 Freestyle | SCY | 5:48.67 | AA+5.08s to AAA | 2025-11-22 | 2025 MR QNS Protect Ya Turkey Neck Invite venue |
| 50 Backstroke | SCY | 32.07 | A+0.18s to AA | 2026-03-14 | 2026 MR SC Junior Metropolitan Championships venue |
| 100 Backstroke | SCY | 1:10.22 | A+0.63s to AA | 2025-12-19 | LAC Arena Holiday Classic |
| 200 Backstroke | SCY | 2:33.40 | A+5.51s to AA | 2025-11-23 | 2025 MR QNS Protect Ya Turkey Neck Invite venue |
| 50 Breaststroke | SCY | 38.68 | BB+0.99s to A | 2025-10-19 | 2025 MR WEST Tricia Dewey Tails of Hope venue |
| 100 Breaststroke | SCY | 1:22.64 | BB+0.45s to A | 2026-01-11 | 2026 MR WEST Chris Dewey Trophy Meet venue |
| 200 Breaststroke | SCY | 2:57.28 | BB+0.79s to A | 2026-01-24 | 2026 MR PAC Winter Classic Invitational venue |
| 50 Butterfly | SCY | 30.47 | A+0.08s to AA | 2026-03-13 | 2026 MR SC Junior Metropolitan Championships venue |
| 100 Butterfly | SCY | 1:07.93 | AA+2.44s to AAA | 2026-03-15 | 2026 MR SC Junior Metropolitan Championships venue |
| 200 Butterfly | SCY | 2:29.86 | AA+5.77s to AAA | 2026-03-14 | 2026 MR SC Junior Metropolitan Championships venue |
| 100 Individual Medley | SCY | 1:11.03 | A+0.94s to AA | 2025-12-19 | LAC Arena Holiday Classic |
| 200 Individual Medley | SCY | 2:26.04 | AA+1.45s to AAA | 2025-12-19 | LAC Arena Holiday Classic |
| 400 Individual Medley | SCY | 5:13.11 | AA+4.82s to AAA | 2026-03-13 | 2026 MR SC Junior Metropolitan Championships venue |
| 50 Freestyle | LCM | 32.46 | A+0.47s to AA | 2026-05-16 | 2026 MR PAC Spring Starter Invitational venue |
| 100 Freestyle | LCM | 1:10.13 | AA+2.84s to AAA | 2026-06-14 | 2026 MR PAC Summer Classic Invitational venue |
| 200 Freestyle | LCM | 2:32.24 | AA+5.45s to AAA | 2026-05-16 | 2026 MR PAC Spring Starter Invitational venue |
| 400 Freestyle | LCM | 5:43.01 | BB+6.22s to A | 2024-07-19 | 2024 Metropolitan LC Junior Met Championships venue |
| 800 Freestyle | LCM | 10:32.37 | AAA+15.58s to AAAA | 2026-06-12 | 2026 MR PAC Summer Classic Invitational venue |
| 1500 Freestyle | LCM | 21:09.32 | AA+32.63s to AAA | 2026-06-06 | 2026 MR LIAC Summertime Classic Invitational venue |
| 50 Backstroke | LCM | 36.13 | AA+0.84s to AAA | 2026-01-01 | Metropolitan Swimming Club |
| 100 Backstroke | LCM | 1:19.09 | AA+2.20s to AAA | 2026-06-14 | 2026 MR PAC Summer Classic Invitational venue |
| 200 Backstroke | LCM | 2:53.10 | A+2.11s to AA | 2026-05-16 | 2026 MR PAC Spring Starter Invitational venue |
| 50 Breaststroke | LCM | 43.37 | BB+0.68s to A | 2026-05-17 | 2026 MR PAC Spring Starter Invitational venue |
| 100 Breaststroke | LCM | 1:43.35 | B+1.16s to BB | 2024-01-01 | Metropolitan Swimming Club |
| 200 Breaststroke | LCM | 3:18.15 | A+3.26s to AA | 2026-05-17 | 2026 MR PAC Spring Starter Invitational venue |
| 50 Butterfly | LCM | 34.30 | A+0.01s to AA | 2026-06-14 | 2026 MR PAC Summer Classic Invitational venue |
| 100 Butterfly | LCM | 1:17.62 | AA+2.83s to AAA | 2026-06-13 | 2026 MR PAC Summer Classic Invitational venue |
| 200 Individual Medley | LCM | 2:51.02 | AA+5.43s to AAA | 2026-05-17 | 2026 MR PAC Spring Starter Invitational venue |
| 400 Individual Medley | LCM | 5:53.49 | AA+0.80s to AAA | 2026-06-07 | 2026 MR LIAC Summertime Classic Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.23 | flying | 200 Free Relay (leg 3) | 2026-03-14 | 2026 MR SC Junior Metropolitan Championships |
| 100 Freestyle | SCY | 1:02.47 | flat | 400 Free Relay | 2026-03-13 | 2026 MR SC Junior Metropolitan Championships |
| 50 Butterfly | SCY | 29.95 | flying | 200 Medley Relay (leg 3) | 2026-03-14 | 2026 MR SC Junior Metropolitan Championships |
| 100 Butterfly | SCY | 1:09.08 | flying | 400 Medley Relay (leg 3) | 2026-03-15 | 2026 MR SC Junior Metropolitan Championships |
| 50 Freestyle | LCM | 37.77 | flying | 200 Medley Relay (leg 4) | 2023-07-23 | 2023 MR Metro LC Age Group Championships |
| 50 Freestyle | LCM | 37.71 | flying | 200 Free Relay (leg 4) | 2023-07-22 | 2023 MR Metro LC Age Group Championships |
| 100 Freestyle | LCM | 1:16.88 | flat | 400 Free Relay | 2024-08-09 | 2024 EZ LC Age Group Championship |
| 100 Freestyle | LCM | 1:15.68 | flying | 400 Free Relay (leg 2) | 2024-07-21 | 2024 Metropolitan LC Junior Met Championships |
| 50 Butterfly | LCM | 36.93 | flying | 200 Medley Relay (leg 3) | 2024-07-21 | 2024 Metropolitan LC Junior Met 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 11-12 · SCY
3781 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:48.67 | 830 |
| 100 BK SCY | 1:10.22 | 711 |
| 100 BR SCY | 1:22.64 | 647 |
| 100 FL SCY | 1:07.93 | 752 |
| 200 IM SCY | 2:26.04 | 841 |
IMR 11-12 · LCM
3771 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:32.24 | 774 |
| 50 BK LCM | 36.13 | 803 |
| 50 BR LCM | 43.37 | 640 |
| 50 FL LCM | 34.30 | 766 |
| 200 IM LCM | 2:51.02 | 788 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:03.09
Front half 30.50s · back half 32.59s
200 Freestyle SCY 2:15.63
Front half 65.84s · back half 69.79s
500 Freestyle SCY 5:48.67
Front half 176.81s · back half 171.86s
100 Backstroke SCY 1:10.22
Front half 34.24s · back half 35.98s
200 Backstroke SCY 2:33.40
Front half 75.38s · back half 78.02s
100 Breaststroke SCY 1:22.64
Front half 40.10s · back half 42.54s
200 Breaststroke SCY 2:57.28
Front half 86.87s · back half 90.41s
100 Butterfly SCY 1:07.93
Front half 32.42s · back half 35.51s
200 Butterfly SCY 2:29.86
Front half 70.32s · back half 79.54s
100 Individual Medley SCY 1:11.03
Front half 33.18s · back half 37.85s
200 Individual Medley SCY 2:26.04
Front half 69.76s · back half 76.28s
400 Individual Medley SCY 5:13.11
Front half 150.27s · back half 162.84s
100 Freestyle LCM 1:10.13
Front half 33.60s · back half 36.53s
200 Freestyle LCM 2:32.24
Front half 73.67s · back half 78.57s
400 Freestyle LCM 5:43.01
Front half 170.06s · back half 172.95s
800 Freestyle LCM 10:32.37
Front half 314.31s · back half 318.06s
1500 Freestyle LCM 21:09.32
Front half 636.82s · back half 632.50s
100 Backstroke LCM 1:19.09
Front half 37.96s · back half 41.13s
200 Backstroke LCM 2:53.10
Front half 86.12s · back half 86.98s
100 Breaststroke LCM 1:43.35
Front half 51.33s · back half 52.02s
200 Breaststroke LCM 3:18.15
Front half 97.09s · back half 101.06s
100 Butterfly LCM 1:17.62
Front half 36.46s · back half 41.16s
200 Individual Medley LCM 2:51.02
Front half 82.36s · back half 88.66s
400 Individual Medley LCM 5:53.49
Front half 175.00s · back half 178.49s
Progression
Faster times are higher. One card per event, all courses & history.