swimRonald Liu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 100 Freestyle | SCY | 50.32 | A+0.43s to AA·+2.03s to Sectionals | 2025-03-02 | 2025 Gulf 13 & Over Champs (PEAK)fast pool |
| 200 Freestyle | SCY | 1:47.60 | AA+2.21s to AAA·+1.81s to Sectionals | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 500 Freestyle | SCY | 4:53.32 | AA+6.63s to AAA·+7.23s to Sectionals | 2024-03-01 | 2024 Gulf 13 & Over Champs (SHRK)slow pool |
| 1650 Freestyle | SCY | 16:49.53 | AA+5.74s to AAA·+0.84s to Sectionals | 2024-12-08 | 2024 Gulf Southern Senior Championshipsvenue |
| 100 Backstroke | SCY | 59.91 | BB+3.72s to A·+4.82s to Sectionals | 2024-10-20 | 2024 FCST Oct Tri Meetvenue |
| 200 Backstroke | SCY | 2:12.71 | BB+8.92s to A·+10.42s to Sectionals | 2024-10-19 | 2024 FCST Oct Tri Meetvenue |
| 100 Butterfly | SCY | 54.22 | A+0.33s to AA·+1.53s to Sectionals | 2024-12-06 | 2024 Gulf Southern Senior Championshipsvenue |
| 200 Butterfly | SCY | 1:58.77 | AA+2.88s to AAA·+0.28s to Sectionals | 2024-03-02 | 2024 Gulf 13 & Over Champs (SHRK)slow pool |
| 200 Individual Medley | SCY | 2:10.48 | BB+3.69s to A·+11.09s to Sectionals | 2025-01-01 | 2025 Southern Senior Championships |
| 400 Individual Medley | SCY | 4:04.22 | AAA+4.83s to AAAA·Futures ✓+7.73s to Winter JNs | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 50 Freestyle | LCM | 26.60 | A+0.31s to AA·+1.01s to Sectionals | 2025-08-02 | 2025 Southern Zone Senior LC Championshipsvenue |
| 100 Freestyle | LCM | 57.68 | AA+2.49s to AAA·+2.39s to Sectionals | 2025-07-30 | 2025 Southern Zone Senior LC Championshipsvenue |
| 200 Freestyle | LCM | 1:59.25 | AAA+4.06s to AAAA·Sectionals ✓+1.46s to Futures | 2026-07-10 | 2026 Gulf LC Senior Champsvenue |
| 400 Freestyle | LCM | 4:19.09 | AA+1.80s to AAA·Sectionals ✓+9.10s to Futures | 2024-07-26 | 2024 Southern Zone Senior LC Championshipsvenue |
| 800 Freestyle | LCM | 9:19.99 | AA+21.20s to AAA·+24.40s to Sectionals | 2024-05-19 | 2024 Katy/Pace May Open Invitationalvenue |
| 1500 Freestyle | LCM | 17:24.39 | AA+13.40s to AAA·+10.20s to Sectionals | 2024-07-27 | 2024 Southern Zone Senior LC Championshipsvenue |
| 50 Backstroke | LCM | 26.61 | AAAA·Jr Nationals ✓+0.22s to Nationals | 2026-01-01 | Texas Senior Circuit Meet IV 2026 |
| 100 Backstroke | LCM | 1:11.72 | BB+4.73s to A·+7.23s to Sectionals | 2025-01-01 | Katy Aquatics |
| 100 Breaststroke | LCM | 1:21.22 | B+0.33s to BB·+8.83s to Sectionals | 2026-04-18 | 2026 DADS April Intrasquad |
| 50 Butterfly | LCM | 28.46 | AA+1.07s to AAA·+0.67s to Sectionals | 2026-01-01 | Texas Senior Circuit Meet IV 2026 |
| 100 Butterfly | LCM | 1:00.65 | AA+1.76s to AAA·+0.16s to Sectionals | 2026-01-01 | Texas Senior Circuit Meet IV 2026 |
| 200 Butterfly | LCM | 2:11.31 | AAA+5.42s to AAAA·Sectionals ✓+1.12s to Futures | 2026-07-11 | 2026 Gulf LC Senior Champsvenue |
| 200 Individual Medley | LCM | 2:28.42 | BB+0.33s to A·+10.73s to Sectionals | 2024-06-23 | 2024 ST AAAA NS George Block Invitevenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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 | LCM | 26.30 | flying | 200 Free Relay (leg 3) | 2025-08-01 | 2025 Southern Zone Senior LC Championships |
| 100 Freestyle | LCM | 57.55 | flying | 400 Free Relay (leg 4) | 2025-08-01 | 2025 Southern Zone Senior LC 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 17-18 · SCY
3659 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:53.32 | 800 |
| 200 BK SCY | 2:12.71 | 537 |
| 200 FL SCY | 1:58.77 | 789 |
| 200 IM SCY | 2:10.48 | 608 |
| 400 IM SCY | 4:04.22 | 925 |
| 200 BR SCY | — | 0 |
IMR 17-18 · LCM
3379 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 1:59.25 | 889 |
| 100 BK LCM | 1:11.72 | 534 |
| 100 BR LCM | 1:21.22 | 514 |
| 100 FL LCM | 1:00.65 | 786 |
| 200 IM LCM | 2:28.42 | 656 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.32
Front half 24.44s · back half 25.88s
500 Freestyle SCY 4:53.32
Front half 144.40s · back half 148.92s
1650 Freestyle SCY 16:49.53
100 Backstroke SCY 59.91
Front half 29.17s · back half 30.74s
200 Backstroke SCY 2:12.71
Front half 64.74s · back half 67.97s
100 Butterfly SCY 54.22
Front half 25.27s · back half 28.95s
200 Butterfly SCY 1:58.77
Front half 56.08s · back half 62.69s
100 Freestyle LCM 57.68
Front half 27.90s · back half 29.78s
200 Freestyle LCM 1:59.25
Front half 57.57s · back half 61.68s
400 Freestyle LCM 4:19.09
Front half 125.27s · back half 133.82s
1500 Freestyle LCM 17:24.39
Front half 510.78s · back half 533.61s
200 Butterfly LCM 2:11.31
Front half 63.55s · back half 67.76s
200 Individual Medley LCM 2:28.42
Front half 68.84s · back half 79.58s
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.