Liam Koos
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.06 | AA+0.67s to AAA·+2.67s to Sectionals | 2026-01-30 | CDOG YMCA State Champsvenue |
| 100 Freestyle | SCY | 54.89 | AA+1.80s to AAA·+6.40s to Sectionals | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 200 Freestyle | SCY | 2:00.99 | AA+4.90s to AAA·+14.70s to Sectionals | 2026-01-16 | 011626sys results |
| 500 Freestyle | SCY | 5:59.36 | BB+17.67s to A·+71.97s to Sectionals | 2024-01-03 | CDOG January Distance Meetvenue |
| 1650 Freestyle | SCY | 14:15.72 | AAAA·US Open ✓ | 2023-11-04 | CT CDOG Distance Meetvenue |
| 50 Backstroke | SCY | 28.85 | AA+0.96s to AAA·+5.16s to Futures | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 100 Backstroke | SCY | 1:02.33 | A+1.24s to AA·+7.84s to Sectionals | 2026-01-16 | 011626sys results |
| 200 Backstroke | SCY | 2:17.37 | A+4.18s to AA·+18.78s to Sectionals | 2026-03-12 | 2026 CT SC Age Group Championshipsfast pool |
| 50 Breaststroke | SCY | 33.77 | A+0.48s to AA·+7.48s to Futures | 2025-03-13 | 031325agc results |
| 100 Breaststroke | SCY | 1:05.28 | AAA+1.99s to AAAA·+3.79s to Sectionals | 2026-03-12 | 2026 CT SC Age Group Championshipsfast pool |
| 200 Breaststroke | SCY | 2:24.60 | AA+0.81s to AAA·+9.61s to Sectionals | 2026-03-12 | 2026 CT SC Age Group Championshipsfast pool |
| 50 Butterfly | SCY | 27.65 | AA+0.36s to AAA·+4.76s to Futures | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 100 Butterfly | SCY | 1:17.84 | +4.05s to B·+24.65s to Sectionals | 2024-10-19 | CT CDOG IMX Meetvenue |
| 200 Butterfly | SCY | 2:56.10 | +10.81s to B·+54.91s to Sectionals | 2025-07-11 | WHAT SCY Trials/Finals Meetvenue |
| 100 Individual Medley | SCY | 1:01.71 | 2025-12-11 | 2025 NE CRA Winter Invitational | |
| 200 Individual Medley | SCY | 2:10.25 | AA+0.86s to AAA·+10.86s to Sectionals | 2026-03-12 | 2026 CT SC Age Group Championshipsfast pool |
| 50 Freestyle | LCM | 28.88 | AA+0.89s to AAA·+3.39s to Sectionals | 2026-05-29 | MAC May Invitevenue |
| 100 Freestyle | LCM | 1:01.54 | AA+0.05s to AAA·+6.05s to Sectionals | 2026-05-29 | MAC May Invitevenue |
| 200 Freestyle | LCM | 2:21.56 | A+1.87s to AA·+20.27s to Sectionals | 2026-06-06 | CDOG June Qualifiervenue |
| 400 Freestyle | LCM | 4:54.28 | AA+11.49s to AAA·+36.69s to Sectionals | 2026-05-29 | MAC May Invitevenue |
| 50 Backstroke | LCM | 31.78 | AAA+0.89s to AAAA·+3.89s to Futures | 2026-07-09 | 2026 CT LC Senior Championshipvenue |
| 100 Backstroke | LCM | 1:11.96 | A+0.17s to AA·+9.97s to Sectionals | 2026-05-15 | WHAT May Trials/Finalsvenue |
| 200 Backstroke | LCM | 2:39.79 | A+3.90s to AA·+25.00s to Sectionals | 2025-08-07 | 2025 EZ LC Age Group Championshipvenue |
| 50 Breaststroke | LCM | 33.66 | AAAA·+2.77s to Futures | 2026-07-30 | 2026 EZ LC Age Group Championshipfast pool |
| 100 Breaststroke | LCM | 1:16.68 | AA+0.29s to AAA·+6.99s to Sectionals | 2026-07-31 | 2026 EZ LC Age Group Championshipfast pool |
| 200 Breaststroke | LCM | 2:56.16 | A+0.87s to AA·+23.57s to Sectionals | 2026-05-15 | WHAT May Trials/Finalsvenue |
| 50 Butterfly | LCM | 27.77 | AAAA·+1.48s to Futures | 2026-05-29 | MAC May Invitevenue |
| 100 Butterfly | LCM | 1:08.11 | AA+2.02s to AAA·+7.92s to Sectionals | 2026-05-15 | WHAT May Trials/Finalsvenue |
| 200 Individual Medley | LCM | 2:31.87 | AA+2.28s to AAA·+15.68s to Sectionals | 2026-05-15 | WHAT May Trials/Finalsvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.
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 Backstroke | SCY | 28.18 | flat | 200 Medley Relay | 2025-12-12 | 2025 NE CRA Winter Invitational |
| 50 Freestyle | LCM | 28.67 | flying | 200 Free Relay (leg 2) | 2025-08-06 | 2025 EZ LC Age Group Championship |
| 50 Freestyle | LCM | 28.55 | flying | 200 Medley Relay (leg 4) | 2025-08-09 | 2025 EZ LC Age Group Championship |
| 100 Freestyle | LCM | 1:05.01 | flying | 400 Free Relay (leg 3) | 2025-08-08 | 2025 EZ LC Age Group Championship |
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 13-14 · SCY
2917 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:59.36 | 521 |
| 200 BK SCY | 2:17.37 | 601 |
| 200 BR SCY | 2:24.60 | 746 |
| 200 FL SCY | 2:56.10 | 297 |
| 200 IM SCY | 2:10.25 | 752 |
| 400 IM SCY | — | 0 |
IMR 13-14 · LCM
3519 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:21.56 | 655 |
| 100 BK LCM | 1:11.96 | 664 |
| 100 BR LCM | 1:16.68 | 770 |
| 100 FL LCM | 1:08.11 | 693 |
| 200 IM LCM | 2:31.87 | 737 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 54.89 split/total mismatch
Front half 26.11s · back half 28.78s
500 Freestyle SCY 5:59.36 split/total mismatch
1650 Freestyle SCY 14:15.72 split/total mismatch
200 Butterfly SCY 2:56.10 split/total mismatch
100 Individual Medley SCY 1:01.71 split/total mismatch
Front half 29.08s · back half 32.63s
200 Freestyle LCM 2:21.56 split/total mismatch
400 Freestyle LCM 4:54.28 split/total mismatch
200 Backstroke LCM 2:39.79
Front half 77.76s · back half 82.03s
100 Breaststroke LCM 1:16.68
Front half 35.06s · back half 41.62s
200 Breaststroke LCM 2:56.16 split/total mismatch
Front half 83.65s · back half 92.51s
200 Individual Medley LCM 2:31.87 split/total mismatch
Front half 73.10s · back half 78.77s
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.