swimYejun Lee
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 26.39 | B+0.30s to BB·+3.20s to Sectionals | 2023-02-19 | CCS Age Group Championshipvenue |
| 100 Freestyle | SCY | 50.28 | AA+1.99s to AAA·Sectionals ✓+3.89s to Futures | 2026-02-16 | 2026 SI Presidents' Day Senior Classic - copivenue |
| 200 Freestyle | SCY | 1:47.94 | AA+1.55s to AAA·Sectionals ✓+6.35s to Futures | 2026-02-15 | 2026 SI Presidents' Day Senior Classic - copivenue |
| 500 Freestyle | SCY | 4:50.76 | AA+2.17s to AAA·Sectionals ✓+13.67s to Futures | 2026-02-28 | 2026 SI CA/NV Speedo Sectionals Oceansidevenue |
| 1000 Freestyle | SCY | 10:10.95 | AA+6.46s to AAA·Sectionals ✓+36.66s to Futures | 2025-11-23 | HISI Senior Fall Championship (SCY)venue |
| 1650 Freestyle | SCY | 16:55.24 | AA+5.45s to AAA·Sectionals ✓+49.75s to Futures | 2025-11-23 | HISI Senior Fall Championship (SCY)venue |
| 50 Backstroke | SCY | 26.50 | A+0.81s to AA·+2.81s to Futures | 2025-11-22 | HISI Senior Fall Championship (SCY)venue |
| 100 Backstroke | SCY | 55.03 | A+0.14s to AA·Sectionals ✓+3.54s to Futures | 2026-02-15 | 2026 SI Presidents' Day Senior Classic - copivenue |
| 200 Backstroke | SCY | 1:56.64 | AA+1.85s to AAA·Sectionals ✓+3.85s to Futures | 2026-02-14 | 2026 SI Presidents' Day Senior Classic - copivenue |
| 100 Butterfly | SCY | 57.55 | BB+0.86s to A·+2.36s to Sectionals | 2025-11-21 | HISI Senior Fall Championship (SCY)venue |
| 200 Individual Medley | SCY | 2:00.86 | AA+3.37s to AAA·Sectionals ✓+6.97s to Futures | 2026-01-19 | 2026 CA Trident Swim Club Winter Invite - copvenue |
| 400 Individual Medley | SCY | 4:12.15 | AAA+10.66s to AAAA·Sectionals ✓+5.16s to Futures | 2026-02-27 | 2026 SI CA/NV Speedo Sectionals Oceansidevenue |
| 100 Freestyle | LCM | 57.64 | AA+2.05s to AAA·Sectionals ✓+4.05s to Futures | 2026-05-24 | 2026 CA 30th NOVA-Speedo Grand Challengevenue |
| 200 Freestyle | LCM | 2:07.19 | AA+5.00s to AAA·Sectionals ✓+9.40s to Futures | 2026-06-06 | 2026 FAST 4th Annual Jon Urbanchek Invitationvenue |
| 400 Freestyle | LCM | 4:21.94 | AA+1.35s to AAA·Sectionals ✓+11.95s to Futures | 2026-07-25 | 2026 CA SCS Summer A/G Champsvenue |
| 800 Freestyle | LCM | 9:03.58 | AA+2.09s to AAA·Sectionals ✓+22.89s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champsvenue |
| 1500 Freestyle | LCM | 17:34.49 | AA+15.40s to AAA·Sectionals ✓+55.50s to Futures | 2026-07-19 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 100 Backstroke | LCM | 1:04.11 | AA+2.22s to AAA·Sectionals ✓+3.52s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champsvenue |
| 200 Backstroke | LCM | 2:15.71 | AA+0.92s to AAA·Sectionals ✓+3.82s to Futures | 2025-07-24 | 2025 CA SCS/RAA Summer A/G Champsvenue |
| 50 Butterfly | LCM | 30.28 | BB+0.09s to A·+3.99s to Futures | 2025-04-26 | 2025 Lakewood Aquatics April LC Closed Inviteslow pool |
| 200 Individual Medley | LCM | 2:21.80 | AA+5.61s to AAA·Sectionals ✓+9.01s to Futures | 2026-06-05 | 2026 FAST 4th Annual Jon Urbanchek Invitationvenue |
| 400 Individual Medley | LCM | 4:54.41 | AA+2.02s to AAA·Sectionals ✓+12.02s to Futures | 2026-06-06 | 2026 FAST 4th Annual Jon Urbanchek Invitationvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 23.44 | flat | 200 Free Relay | 2025-11-23 | HISI Senior Fall Championship (SCY) |
| 50 Freestyle | SCY | 23.17 | flying | 200 Free Relay (leg 4) | 2024-12-14 | 2024 CA GWSC/SCS WAG |
| 100 Freestyle | SCY | 50.34 | flat | 400 Free Relay | 2025-11-23 | HISI Senior Fall Championship (SCY) |
| 100 Freestyle | SCY | 51.03 | flying | 400 Free Relay (leg 4) | 2026-01-11 | SMSC 2026 Triple Slam! |
| 100 Freestyle | SCY | 48.46 | flying | 400 Medley Relay (leg 4) | 2025-11-22 | HISI Senior Fall Championship (SCY) |
| 200 Freestyle | SCY | 1:49.26 | flying | 800 Free Relay (leg 3) | 2026-02-14 | 2026 SI Presidents' Day Senior Classic - copi |
| 50 Backstroke | SCY | 26.25 | flat | 200 Medley Relay | 2026-02-16 | 2026 SI Presidents' Day Senior Classic - copi |
| 100 Backstroke | SCY | 56.94 | flat | 400 Medley Relay | 2025-02-16 | 2025 SI Presidents' Day Senior Classic |
| 100 Butterfly | SCY | 58.11 | flying | 400 Medley Relay (leg 3) | 2026-02-15 | 2026 SI Presidents' Day Senior Classic - copi |
| 50 Freestyle | LCM | 26.46 | flying | 200 Free Relay (leg 2) | 2025-07-25 | 2025 CA SCS/RAA Summer A/G Champs |
| 100 Freestyle | LCM | 56.45 | flying | 400 Free Relay (leg 3) | 2026-07-18 | 2026 CA/NV Summer Speedo Sectionals @ BREA - |
| 200 Freestyle | LCM | 2:04.31 | flat | 800 Free Relay | 2026-07-23 | 2026 CA SCS Summer A/G Champs |
| 200 Freestyle | LCM | 2:05.11 | flying | 800 Free Relay (leg 2) | 2026-07-17 | 2026 CA/NV Summer Speedo Sectionals @ BREA - |
| 50 Backstroke | LCM | 30.51 | flat | 200 Medley Relay | 2026-07-16 | 2026 CA/NV Summer Speedo Sectionals @ BREA - |
| 100 Backstroke | LCM | 1:03.44 | flat | 400 Medley Relay | 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 17-18 · SCY
3219 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:50.76 | 822 |
| 200 BK SCY | 1:56.64 | 791 |
| 200 IM SCY | 2:00.86 | 766 |
| 400 IM SCY | 4:12.15 | 840 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
IMR 17-18 · SCY
2886 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:47.94 | 799 |
| 100 BK SCY | 55.03 | 701 |
| 100 FL SCY | 57.55 | 620 |
| 200 IM SCY | 2:00.86 | 766 |
| 100 BR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.28
Front half 24.56s · back half 25.72s
200 Freestyle SCY 1:47.94
Front half 52.99s · back half 54.95s
500 Freestyle SCY 4:50.76
Front half 142.42s · back half 148.34s
1650 Freestyle SCY 16:55.24
100 Backstroke SCY 55.03
Front half 26.64s · back half 28.39s
200 Backstroke SCY 1:56.64
Front half 56.81s · back half 59.83s
200 Individual Medley SCY 2:00.86
Front half 56.95s · back half 63.91s
400 Individual Medley SCY 4:12.15
Front half 119.50s · back half 132.65s
100 Freestyle LCM 57.64
Front half 27.91s · back half 29.73s
200 Freestyle LCM 2:07.19
Front half 61.30s · back half 65.89s
400 Freestyle LCM 4:21.94
Front half 129.55s · back half 132.39s
800 Freestyle LCM 9:03.58
Front half 269.86s · back half 273.72s
1500 Freestyle LCM 17:34.49 RT 0.65s
Front half 525.44s · back half 529.05s
100 Backstroke LCM 1:04.11
Front half 31.17s · back half 32.94s
200 Backstroke LCM 2:15.71
Front half 65.73s · back half 69.98s
200 Individual Medley LCM 2:21.80
Front half 65.53s · back half 76.27s
400 Individual Medley LCM 4:54.41
Front half 144.00s · back half 150.41s
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.