Sean Luk
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.02 | A+0.93s to AA·+0.83s to Sectionals | 2026-02-01 | BCA Winter Heatsvenue |
| 100 Freestyle | SCY | 51.47 | A+1.08s to AA·+0.48s to Sectionals | 2026-01-31 | BCA Winter Heatsvenue |
| 200 Freestyle | SCY | 1:51.42 | A+0.23s to AA·Sectionals ✓+9.83s to Futures | 2024-12-15 | 2024 CA RAA/SCS WAGvenue |
| 500 Freestyle | SCY | 5:01.31 | AA+12.72s to AAA·Sectionals ✓+24.22s to Futures | 2025-11-16 | BCA Fall Festivalvenue |
| 1000 Freestyle | SCY | 10:12.87 | AA+8.38s to AAA·Sectionals ✓+38.58s to Futures | 2025-12-12 | 2025 CA GWSC Winter Age Group Invitationalvenue |
| 1650 Freestyle | SCY | 17:20.74 | AA+30.95s to AAA·Sectionals ✓+75.25s to Futures | 2025-11-15 | BCA Fall Festivalvenue |
| 50 Backstroke | SCY | 27.50 | BB+0.71s to A·+3.81s to Futures | 2026-01-31 | BCA Winter Heatsvenue |
| 100 Backstroke | SCY | 58.23 | BB+0.94s to A·+2.74s to Sectionals | 2026-02-01 | BCA Winter Heatsvenue |
| 200 Backstroke | SCY | 2:07.65 | BB+2.46s to A·+6.36s to Sectionals | 2025-11-15 | BCA Fall Festivalvenue |
| 50 Breaststroke | SCY | 30.05 | A+0.46s to AA·+3.76s to Futures | 2025-09-20 | 2025 TSM Aquatics Season Openervenue |
| 100 Breaststroke | SCY | 1:05.08 | BB+0.39s to A·+1.89s to Sectionals | 2025-09-21 | 2025 TSM Aquatics Season Openervenue |
| 200 Breaststroke | SCY | 2:22.71 | BB+1.92s to A·+5.42s to Sectionals | 2025-02-22 | 2025 Pacific Committee SC Championshipvenue |
| 50 Butterfly | SCY | 26.22 | A+0.63s to AA·+3.33s to Futures | 2025-09-21 | 2025 TSM Aquatics Season Openervenue |
| 100 Butterfly | SCY | 56.97 | BB+0.28s to A·+1.78s to Sectionals | 2025-02-23 | 2025 Pacific Committee SC Championshipvenue |
| 200 Butterfly | SCY | 2:02.36 | A+0.17s to AA·Sectionals ✓+8.67s to Futures | 2025-12-14 | 2025 CA GWSC Winter Age Group Invitationalvenue |
| 200 Individual Medley | SCY | 2:03.68 | A+0.79s to AA·Sectionals ✓+9.79s to Futures | 2026-03-01 | 2026 Pacific Committee SC Chmpionshipvenue |
| 400 Individual Medley | SCY | 4:20.10 | AA+7.11s to AAA·Sectionals ✓+13.11s to Futures | 2026-02-28 | 2026 Pacific Committee SC Chmpionshipvenue |
| 50 Freestyle | LCM | 26.88 | A+0.19s to AA·Sectionals ✓+2.29s to Futures | 2026-05-02 | 2026 TORR May Spring Splashvenue |
| 100 Freestyle | LCM | 58.75 | A+0.66s to AA·Sectionals ✓+5.16s to Futures | 2025-05-31 | CITI Summer Sizzlervenue |
| 200 Freestyle | LCM | 2:07.66 | AA+5.47s to AAA·Sectionals ✓+9.87s to Futures | 2026-05-02 | 2026 TORR May Spring Splashvenue |
| 400 Freestyle | LCM | 4:28.49 | AA+7.90s to AAA·Sectionals ✓+18.50s to Futures | 2025-05-31 | CITI Summer Sizzlervenue |
| 800 Freestyle | LCM | 9:25.48 | AA+23.99s to AAA·Sectionals ✓+44.79s to Futures | 2026-06-14 | 2026 SCS June AG Invitevenue |
| 1500 Freestyle | LCM | 17:49.85 | AA+30.76s to AAA·Sectionals ✓+70.86s to Futures | 2024-07-25 | 2024 CA SCS/GWSC Summer A/G Champsvenue |
| 50 Breaststroke | LCM | 32.90 | AA+0.81s to AAA·+2.01s to Futures | 2026-07-25 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 100 Breaststroke | LCM | 1:11.42 | AA+2.23s to AAA·Sectionals ✓+3.23s to Futures | 2026-06-13 | 2026 SCS June AG Invitevenue |
| 200 Breaststroke | LCM | 2:34.13 | AA+3.14s to AAA·Sectionals ✓+5.04s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 50 Butterfly | LCM | 28.42 | AA+0.73s to AAA·+2.13s to Futures | 2026-07-26 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 100 Butterfly | LCM | 1:01.20 | AA+1.51s to AAA·Sectionals ✓+3.21s to Futures | 2026-07-25 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 200 Butterfly | LCM | 2:15.33 | AA+2.14s to AAA·Sectionals ✓+5.14s to Futures | 2026-07-23 | 2026 CA SCS Summer A/G Champs @ BREAfast pool |
| 200 Individual Medley | LCM | 2:15.94 | AAA+5.95s to AAAA·Sectionals ✓+3.15s to Futures | 2026-06-12 | 2026 SCS June AG Invitevenue |
| 400 Individual Medley | LCM | 4:54.04 | AA+1.65s to AAA·Sectionals ✓+11.65s to Futures | 2025-06-12 | 2025 June Age Group Invitevenue |
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 | 23.21 | flying | 200 Free Relay (leg 4) | 2025-12-12 | 2025 CA GWSC Winter Age Group Invitational |
| 200 Freestyle | SCY | 2:02.01 | flying | 800 Free Relay (leg 3) | 2025-02-21 | 2025 Pacific Committee SC Championship |
| 100 Butterfly | SCY | 57.82 | flying | 400 Medley Relay (leg 3) | 2025-02-23 | 2025 Pacific Committee SC Championship |
| 50 Freestyle | LCM | 27.96 | flying | 200 Free Relay (leg 2) | 2024-07-25 | 2024 CA SCS/GWSC Summer A/G Champs |
| 100 Freestyle | LCM | 59.28 | flying | 400 Medley Relay (leg 4) | 2024-07-27 | 2024 CA SCS/GWSC Summer A/G Champs |
| 200 Freestyle | LCM | 2:13.58 | flying | 800 Free Relay (leg 3) | 2024-07-26 | 2024 CA SCS/GWSC Summer A/G Champs |
| 50 Backstroke | LCM | 35.93 | flat | 200 Medley Relay | 2024-07-25 | 2024 CA SCS/GWSC Summer A/G Champs |
| 50 Breaststroke | LCM | 33.67 | flying | 200 Medley Relay (leg 2) | 2025-06-15 | 2025 June Age Group Invite |
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
4163 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:01.31 | 738 |
| 200 BK SCY | 2:07.65 | 603 |
| 200 BR SCY | 2:22.71 | 620 |
| 200 FL SCY | 2:02.36 | 722 |
| 200 IM SCY | 2:03.68 | 714 |
| 400 IM SCY | 4:20.10 | 766 |
IMR 17-18 · SCY
3307 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:51.42 | 727 |
| 100 BK SCY | 58.23 | 591 |
| 100 BR SCY | 1:05.08 | 636 |
| 100 FL SCY | 56.97 | 639 |
| 200 IM SCY | 2:03.68 | 714 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 51.47
Front half 25.04s · back half 26.43s
200 Freestyle SCY 1:51.42
Front half 54.02s · back half 57.40s
500 Freestyle SCY 5:01.31
Front half 149.36s · back half 151.95s
1000 Freestyle SCY 10:12.87
Front half 300.93s · back half 311.94s
1650 Freestyle SCY 17:20.74
100 Backstroke SCY 58.23
Front half 28.59s · back half 29.64s
200 Backstroke SCY 2:07.65
Front half 61.70s · back half 65.95s
100 Breaststroke SCY 1:05.08
Front half 30.76s · back half 34.32s
200 Breaststroke SCY 2:22.71
Front half 68.15s · back half 74.56s
100 Butterfly SCY 56.97
Front half 27.12s · back half 29.85s
200 Butterfly SCY 2:02.36
Front half 57.84s · back half 64.52s
200 Individual Medley SCY 2:03.68
Front half 59.80s · back half 63.88s
400 Individual Medley SCY 4:20.10
Front half 128.21s · back half 131.89s
200 Freestyle LCM 2:07.66
Front half 62.15s · back half 65.51s
400 Freestyle LCM 4:28.49
Front half 133.19s · back half 135.30s
800 Freestyle LCM 9:25.48
Front half 275.94s · back half 289.54s
1500 Freestyle LCM 17:49.85
Front half 526.98s · back half 542.87s
100 Breaststroke LCM 1:11.42
Front half 33.99s · back half 37.43s
200 Breaststroke LCM 2:34.13 RT 0.68s
Front half 73.64s · back half 80.49s
100 Butterfly LCM 1:01.20 RT 0.58s
Front half 28.77s · back half 32.43s
200 Butterfly LCM 2:15.33 RT 0.70s
Front half 64.73s · back half 70.60s
200 Individual Medley LCM 2:15.94
Front half 64.86s · back half 71.08s
400 Individual Medley LCM 4:54.04
Front half 144.32s · back half 149.72s
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.