swimJordan Ko
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.24 | AAAA·Futures ✓+0.75s to Winter JNs | 2026-03-07 | 2026 SC Illinois Senior Championships - copivenue |
| 100 Freestyle | SCY | 46.99 | AAA+0.20s to AAAA·Sectionals ✓+0.60s to Futures | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 200 Freestyle | SCY | 1:46.78 | AAA+4.59s to AAAA·Sectionals ✓+5.19s to Futures | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 100 Backstroke | SCY | 54.53 | AA+1.24s to AAA·Sectionals ✓+3.04s to Futures | 2026-03-07 | 2026 SC Illinois Senior Championships - copivenue |
| 200 Backstroke | SCY | 2:08.35 | BB+1.06s to A·+6.96s to Sectionals | 2024-01-20 | 2024 MMSC Winter Inviteslow pool |
| 50 Breaststroke | SCY | 26.02 | AAAA·Futures ✓+0.73s to Jr Nationals | 2026-03-08 | 2026 SC Illinois Senior Championships - copivenue |
| 100 Breaststroke | SCY | 56.43 | AAAA·Futures ✓+0.94s to Winter JNs | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 200 Breaststroke | SCY | 2:02.53 | AAAA·Futures ✓+0.94s to Winter JNs | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 50 Butterfly | SCY | 22.78 | AAAA·Futures ✓+0.79s to Jr Nationals | 2026-03-07 | 2026 SC Illinois Senior Championships - copivenue |
| 100 Butterfly | SCY | 50.18 | AAAA·Futures ✓+1.49s to Winter JNs | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 100 Individual Medley | SCY | 54.30 | 2024-11-23 | 2024 Speedo Grand Chalengevenue | |
| 200 Individual Medley | SCY | 1:51.85 | AAAA·Futures ✓+2.26s to Winter JNs | 2025-11-21 | 2024 Speedo Grand Chalenge |
| 50 Freestyle | LCM | 25.02 | AAA+0.23s to AAAA·Sectionals ✓+0.43s to Futures | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Freestyle | LCM | 53.86 | AAAA·Sectionals ✓+0.27s to Futures | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 200 Freestyle | LCM | 2:06.04 | AA+2.45s to AAA·+2.55s to Sectionals | 2024-07-20 | 2024 IL Swimming LC Age Group Championshipsvenue |
| 50 Backstroke | LCM | 29.31 | AAA+0.92s to AAAA·+0.62s to Sectionals | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Backstroke | LCM | 1:08.39 | BB+0.30s to A·+4.00s to Sectionals | 2024-05-12 | Blue Devil Swim Club May Maniavenue |
| 200 Backstroke | LCM | 2:33.18 | BB+5.49s to A·+13.39s to Sectionals | 2024-05-11 | Blue Devil Swim Club May Maniavenue |
| 50 Breaststroke | LCM | 30.23 | AAAA·Futures ✓+0.64s to Jr Nationals | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Breaststroke | LCM | 1:05.19 | AAAA·Winter JNs ✓+0.10s to Jr Nationals | 2026-08-03 | 2026 Speedo Junior National Championshipsvenue |
| 200 Breaststroke | LCM | 2:21.23 | AAAA·Jr Nationals ✓+1.84s to US Open | 2026-08-06 | 2026 Speedo Junior National Championshipsvenue |
| 50 Butterfly | LCM | 25.59 | AAAA·Futures ✓+0.20s to Jr Nationals | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Butterfly | LCM | 56.67 | AAAA·Futures ✓+0.18s to Winter JNs | 2026-08-05 | 2026 Speedo Junior National Championshipsvenue |
| 200 Individual Medley | LCM | 2:11.06 | AAAA·Futures ✓+1.77s to Winter JNs | 2025-07-27 | Illinois Swimming Age Group Champs LC 25venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
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 | 21.77 | flat | 200 Free Relay | 2025-03-13 | 2025 ISI Winter 11-14 Age Group Championships |
| 50 Freestyle | SCY | 22.61 | flying | 200 Free Relay (leg 2) | 2024-11-22 | 2024 Speedo Grand Chalenge |
| 100 Freestyle | SCY | 47.72 | flat | 400 Free Relay | 2025-03-16 | 2025 ISI Winter 11-14 Age Group Championships |
| 100 Freestyle | SCY | 46.45 | flying | 400 Free Relay (leg 3) | 2026-03-08 | 2026 SC Illinois Senior Championships - copi |
| 200 Freestyle | SCY | 1:46.99 | flat | 800 Free Relay | 2025-03-14 | 2025 ISI Winter 11-14 Age Group Championships |
| 50 Breaststroke | SCY | 26.86 | flying | 200 Medley Relay (leg 2) | 2024-11-23 | 2024 Speedo Grand Chalenge |
| 100 Breaststroke | SCY | 55.69 | flying | 400 Medley Relay (leg 2) | 2026-03-07 | 2026 SC Illinois Senior Championships - copi |
| 50 Butterfly | SCY | 22.41 | flying | 200 Medley Relay (leg 3) | 2026-03-08 | 2026 SC Illinois Senior Championships - copi |
| 100 Butterfly | SCY | 51.91 | flying | 400 Medley Relay (leg 3) | 2025-03-15 | 2025 ISI Winter 11-14 Age Group Championships |
| 50 Freestyle | LCM | 25.35 | flat | 200 Free Relay | 2025-07-24 | Illinois Swimming Age Group Champs LC 25 |
| 50 Freestyle | LCM | 24.62 | flying | 200 Free Relay (leg 3) | 2026-07-09 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPS |
| 50 Freestyle | LCM | 25.28 | flying | 200 Medley Relay (leg 4) | 2024-06-02 | 2024 LSC Duel in the Pool |
| 100 Freestyle | LCM | 54.33 | flying | 400 Free Relay (leg 2) | 2025-07-26 | Illinois Swimming Age Group Champs LC 25 |
| 200 Freestyle | LCM | 2:00.32 | flying | 800 Free Relay (leg 2) | 2025-07-25 | Illinois Swimming Age Group Champs LC 25 |
| 50 Breaststroke | LCM | 29.75 | flying | 200 Medley Relay (leg 2) | 2026-07-09 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPS |
| 100 Breaststroke | LCM | 1:05.31 | flying | 400 Medley Relay (leg 2) | 2026-07-12 | 2026 CENTRAL ZONE NORTH SUMMER 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 15-16 · SCY
2746 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 2:08.35 | 641 |
| 200 BR SCY | 2:02.53 | 1069 |
| 200 IM SCY | 1:51.85 | 1036 |
| 500 FR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 15-16 · SCY
4790 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:46.78 | 871 |
| 100 BK SCY | 54.53 | 803 |
| 100 BR SCY | 56.43 | 1068 |
| 100 FL SCY | 50.18 | 1012 |
| 200 IM SCY | 1:51.85 | 1036 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Backstroke SCY 54.53
Front half 26.46s · back half 28.07s
100 Individual Medley SCY 54.30
Front half 25.32s · back half 28.98s
100 Freestyle LCM 53.86 RT 0.68ssplit/total mismatch
Front half 26.18s · back half 27.68s
200 Freestyle LCM 2:06.04
Front half 60.97s · back half 65.07s
200 Backstroke LCM 2:33.18
Front half 75.03s · back half 78.15s
100 Breaststroke LCM 1:05.19 RT 0.66s
Front half 30.36s · back half 34.83s
200 Breaststroke LCM 2:21.23 RT 0.66s
Front half 68.41s · back half 72.82s
100 Butterfly LCM 56.67 RT 0.63s
Front half 26.45s · back half 30.22s
200 Individual Medley LCM 2:11.06 RT 0.72s
Front half 62.26s · back half 68.80s
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.