swimMatthew Ko
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.90 | AA+0.21s to AAA | 2024-11-08 | 2024 Legends of Coaching Series-Kevin Perry venue |
| 100 Freestyle | SCY | 47.66 | AAA+2.17s to AAAA | 2024-12-22 | 2024 CA-NV December Sectionals At BREA venue |
| 500 Freestyle | SCY | 4:47.85 | AA+1.16s to AAA | 2026-01-23 | CA 2026 NOVA Janurary Age-Group Intrasquad venue |
| 50 Backstroke | SCY | 24.04 | AAA+0.85s to AAAA | 2026-01-19 | YARDS----2026 Road to Sofi venue |
| 100 Backstroke | SCY | 51.13 | AAA+1.94s to AAAA | 2025-11-22 | 2025 Southern Pacific Invite venue |
| 200 Backstroke | SCY | 1:51.29 | AAA+3.00s to AAAA | 2026-01-17 | YARDS----2026 Road to Sofi venue |
| 50 Breaststroke | SCY | 26.60 | AAAA | 2025-11-24 | 2025 Southern Pacific Invite venue |
| 100 Breaststroke | SCY | 56.70 | AAA+0.51s to AAAA | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 200 Breaststroke | SCY | 2:03.34 | AAA+1.15s to AAAA | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 50 Butterfly | SCY | 23.08 | AAAA | 2025-11-24 | 2025 Southern Pacific Invite venue |
| 100 Butterfly | SCY | 51.26 | AAA+2.07s to AAAA | 2025-11-22 | 2025 Southern Pacific Invite venue |
| 200 Butterfly | SCY | 1:51.05 | AAA+0.36s to AAAA | 2025-11-23 | 2025 Southern Pacific Invite venue |
| 200 Individual Medley | SCY | 1:51.38 | AAA+0.49s to AAAA | 2025-11-07 | 2025 Legends of Coaching Series_Peter Daland venue |
| 400 Individual Medley | SCY | 3:59.53 | AAA+0.14s to AAAA | 2025-11-08 | 2025 Legends of Coaching Series_Peter Daland venue |
| 50 Freestyle | LCM | 25.52 | AA+0.43s to AAA | 2026-06-06 | 2026 FAST 4th Annual Jon Urbanchek Invitation venue |
| 50 Backstroke | LCM | 27.81 | AAAA | 2026-05-23 | 2026 CA 30th NOVA-Speedo Grand Challenge venue |
| 100 Backstroke | LCM | 1:00.85 | AAA+2.16s to AAAA | 2025-06-15 | 2025 June Age Group Invite venue |
| 200 Backstroke | LCM | 2:11.26 | AAA+3.57s to AAAA | 2026-01-17 | Finals -2026 Road to Sofi - copied venue |
| 50 Breaststroke | LCM | 29.92 | AAAA | 2026-06-20 | 2026 CA MVN Fran Crippen SMOC venue |
| 100 Breaststroke | LCM | 1:06.62 | AAA+1.33s to AAAA | 2026-06-21 | 2026 CA MVN Fran Crippen SMOC venue |
| 200 Breaststroke | LCM | 2:23.76 | AAA+0.87s to AAAA | 2025-07-11 | 2025 LAI Entries venue |
| 50 Butterfly | LCM | 26.83 | AAA+0.74s to AAAA | 2026-06-06 | 2026 FAST 4th Annual Jon Urbanchek Invitation venue |
| 100 Butterfly | LCM | 58.30 | AAA+2.01s to AAAA | 2025-07-25 | Futures Time Trials 2025 venue |
| 200 Butterfly | LCM | 2:30.48 | BB+6.59s to A | 2021-08-07 | 2021 Western Zone Age Group Championships venue |
| 200 Individual Medley | LCM | 2:09.83 | AAA+0.24s to AAAA | 2025-06-13 | 2025 June Age Group Invite venue |
| 400 Individual Medley | LCM | 4:37.05 | AAAA | 2025-06-12 | 2025 June Age Group Invite venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 100 Freestyle | SCY | 47.21 | flying | 400 Medley Relay (leg 4) | 2024-12-20 | 2024 CA-NV December Sectionals At BREA |
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
5642 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:47.85 | 847 |
| 200 BK SCY | 1:51.29 | 911 |
| 200 BR SCY | 2:03.34 | 960 |
| 200 FL SCY | 1:51.05 | 966 |
| 200 IM SCY | 1:51.38 | 978 |
| 400 IM SCY | 3:59.53 | 980 |
IMR 17-18 · SCY
3692 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 51.13 | 874 |
| 100 BR SCY | 56.70 | 962 |
| 100 FL SCY | 51.26 | 878 |
| 200 IM SCY | 1:51.38 | 978 |
| 200 FR 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 47.66 RT 0.57s
Front half 22.90s · back half 24.76s
500 Freestyle SCY 4:47.85
Front half 138.58s · back half 149.27s
100 Backstroke SCY 51.13
Front half 24.82s · back half 26.31s
200 Backstroke SCY 1:51.29
Front half 54.30s · back half 56.99s
100 Breaststroke SCY 56.70
Front half 26.49s · back half 30.21s
100 Butterfly SCY 51.26
Front half 23.74s · back half 27.52s
200 Butterfly SCY 1:51.05
Front half 53.10s · back half 57.95s
200 Individual Medley SCY 1:51.38
400 Individual Medley SCY 3:59.53
Front half 117.16s · back half 122.37s
100 Backstroke LCM 1:00.85
Front half 29.81s · back half 31.04s
200 Backstroke LCM 2:11.26
Front half 63.96s · back half 67.30s
100 Breaststroke LCM 1:06.62
Front half 30.87s · back half 35.75s
200 Breaststroke LCM 2:23.76
Front half 68.16s · back half 75.60s
100 Butterfly LCM 58.30
Front half 27.01s · back half 31.29s
200 Butterfly LCM 2:30.48
Front half 70.05s · back half 80.43s
200 Individual Medley LCM 2:09.83
Front half 61.89s · back half 67.94s
400 Individual Medley LCM 4:37.05
Front half 135.64s · back half 141.41s
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.
Progression
Faster times are higher. One card per event, all courses & history.