swimJoon Cha
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.69 | AA+0.90s to AAA·+6.50s to Sectionals | 2026-10-25 | SUNN Fall Classic 2026fast pool |
| 100 Freestyle | SCY | 1:03.80 | AAA+2.71s to AAAA·+12.81s to Sectionals | 2026-11-08 | 2026 Joyce Lanphere Invitationalvenue |
| 200 Freestyle | SCY | 2:15.13 | AAA+2.34s to AAAA·+23.34s to Sectionals | 2026-10-24 | SUNN Fall Classic 2026fast pool |
| 500 Freestyle | SCY | 6:11.72 | AA+1.73s to AAA·+69.03s to Sectionals | 2026-10-04 | 2026 De Anza Cupertino Aquatics SC CBA Meetvenue |
| 50 Backstroke | SCY | 36.21 | A+0.22s to AA·+12.52s to Futures | 2026-10-25 | SUNN Fall Classic 2026fast pool |
| 100 Backstroke | SCY | 1:13.81 | AA+1.02s to AAA·+18.32s to Sectionals | 2026-09-19 | PSL Pacifica Season Launch CBA+ Meetvenue |
| 50 Breaststroke | SCY | 42.12 | BB+0.03s to A·+15.83s to Futures | 2026-09-19 | PSL Pacifica Season Launch CBA+ Meetvenue |
| 100 Breaststroke | SCY | 1:25.30 | AA+1.61s to AAA·+22.11s to Sectionals | 2026-11-07 | 2026 Joyce Lanphere Invitationalvenue |
| 50 Butterfly | SCY | 30.94 | AAA+0.15s to AAAA·+8.05s to Futures | 2026-10-24 | SUNN Fall Classic 2026fast pool |
| 100 Butterfly | SCY | 1:08.46 | AAAA·+13.27s to Sectionals | 2026-10-25 | SUNN Fall Classic 2026fast pool |
| 100 Individual Medley | SCY | 1:16.68 | A+0.19s to AA | 2026-07-25 | 2026 DACA SC CBA Meetvenue |
| 200 Individual Medley | SCY | 2:33.43 | AAA+2.54s to AAAA·+29.44s to Sectionals | 2026-11-08 | 2026 Joyce Lanphere Invitationalvenue |
| 50 Freestyle | LCM | 34.33 | AA+1.34s to AAA·+7.34s to Sectionals | 2026-08-01 | Long Course Far Westernsvenue |
| 100 Freestyle | LCM | 1:14.56 | AA+1.27s to AAA·+15.57s to Sectionals | 2026-07-19 | 2026 Adam Szmidt Memorial PC Summer AG Champsvenue |
| 200 Freestyle | LCM | 2:37.06 | AAA+5.07s to AAAA·+28.37s to Sectionals | 2026-07-17 | 2026 Adam Szmidt Memorial PC Summer AG Champsvenue |
| 400 Freestyle | LCM | 5:30.38 | AAA+9.09s to AAAA·+55.99s to Sectionals | 2026-08-01 | Long Course Far Westernsvenue |
| 50 Backstroke | LCM | 46.31 | BB+3.22s to A·+18.42s to Futures | 2026-06-14 | 2026 DACA LC CBA Meetvenue |
| 100 Backstroke | LCM | 1:34.05 | BB+1.76s to A·+28.86s to Sectionals | 2026-06-13 | 2026 DACA LC CBA Meetvenue |
| 50 Breaststroke | LCM | 53.31 | BB+5.42s to A·+22.42s to Futures | 2026-05-02 | Alto Spring Jam CBAvenue |
| 100 Breaststroke | LCM | 1:51.04 | BB+5.45s to A·+37.34s to Sectionals | 2026-06-14 | 2026 DACA LC CBA Meetvenue |
| 50 Butterfly | LCM | 36.11 | AAA+1.42s to AAAA·+9.82s to Futures | 2026-08-01 | Long Course Far Westernsvenue |
| 100 Butterfly | LCM | 1:19.57 | AAAA·+16.48s to Sectionals | 2026-07-18 | 2026 Adam Szmidt Memorial PC Summer AG Champsvenue |
| 200 Individual Medley | LCM | 2:58.73 | AAA+6.24s to AAAA·+34.04s to Sectionals | 2026-07-30 | Long Course Far Westernsvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
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 | 33.33 | flying | 200 Free Relay (leg 3) | 2026-04-26 | 2026 Pacific Swimming Zone All Star Meet |
| 50 Freestyle | SCY | 31.24 | flying | 200 Medley Relay (leg 4) | 2026-03-21 | SCY Spring Age Group Championships |
| 50 Butterfly | SCY | 34.70 | flying | 200 Medley Relay (leg 3) | 2026-01-25 | 2026 Zone 1 North Championships |
| 50 Freestyle | LCM | 35.17 | flat | 200 Free Relay | 2026-07-17 | 2026 Adam Szmidt Memorial PC Summer AG Champs |
| 50 Freestyle | LCM | 34.45 | flying | 200 Medley Relay (leg 4) | 2026-07-18 | 2026 Adam Szmidt Memorial PC Summer AG 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 10 & under · SCY
4560 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:15.13 | 946 |
| 100 BK SCY | 1:13.81 | 816 |
| 100 BR SCY | 1:25.30 | 788 |
| 100 FL SCY | 1:08.46 | 1059 |
| 200 IM SCY | 2:33.43 | 951 |
IMR 10 & under · SCY
3944 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:03.80 | 860 |
| 50 BK SCY | 36.21 | 702 |
| 50 BR SCY | 42.12 | 644 |
| 50 FL SCY | 30.94 | 985 |
| 100 IM SCY | 1:16.68 | 753 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Backstroke SCY 1:13.81
Front half 36.25s · back half 37.56s
200 Freestyle LCM 2:37.06
Front half 74.99s · back half 82.07s
400 Freestyle LCM 5:30.38
Front half 162.44s · back half 167.94s
100 Butterfly LCM 1:19.57
Front half 36.32s · back half 43.25s
200 Individual Medley LCM 2:58.73
Front half 84.42s · back half 94.31s
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.