swimNathaniel Yoon
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.98 | AA+0.29s to AAA | 2026-01-24 | 2026 Zone 1 North Championships venue |
| 100 Freestyle | SCY | 47.25 | AAA+1.76s to AAAA | 2026-01-25 | 2026 Zone 1 North Championships venue |
| 50 Backstroke | SCY | 22.39 | AAAA | 2026-02-27 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 100 Backstroke | SCY | 47.63 | AAAA | 2026-02-28 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 200 Backstroke | SCY | 1:48.82 | AAA+0.53s to AAAA | 2025-12-13 | 2025 West Speedo Winter Juniors venue |
| 100 Breaststroke | SCY | 59.31 | AA+0.42s to AAA | 2026-01-24 | 2026 Zone 1 North Championships venue |
| 50 Butterfly | SCY | 21.39 | AAAA | 2026-03-01 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 100 Butterfly | SCY | 47.51 | AAAA | 2026-02-27 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 200 Individual Medley | SCY | 1:47.69 | AAAA | 2026-03-01 | 2026 SI CA/NV Speedo Sectionals Oceanside venue |
| 400 Individual Medley | SCY | 4:10.09 | AAA+10.70s to AAAA | 2026-01-31 | PLS Superleague SC Championships venue |
| 100 Freestyle | LCM | 53.65 | AAA+0.96s to AAAA | 2026-06-13 | 2026 DACA LC CBA Meet venue |
| 200 Freestyle | LCM | 1:54.91 | AAAA | 2025-07-23 | USA Swimming Futures Sacramento 2025 venue |
| 50 Backstroke | LCM | 27.94 | AAAA | 2026-06-13 | 2026 DACA LC CBA Meet venue |
| 100 Backstroke | LCM | 59.55 | AAA+0.86s to AAAA | 2025-07-24 | USA Swimming Futures Sacramento 2025 venue |
| 200 Backstroke | LCM | 2:12.82 | AAA+5.13s to AAAA | 2026-05-30 | 2026 George Haines International Swim Meet venue |
| 50 Butterfly | LCM | 25.32 | AAAA | 2026-06-13 | 2026 DACA LC CBA Meet venue |
| 100 Butterfly | LCM | 56.26 | AAAA | 2025-07-25 | USA Swimming Futures Sacramento 2025 venue |
| 200 Individual Medley | LCM | 2:13.27 | AAA+3.68s to AAAA | 2025-01-01 | 2025 tyr go challenge results |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 20.91 | flying | 200 Free Relay (leg 2) | 2025-12-12 | 2025 West Speedo Winter Juniors |
| 100 Freestyle | SCY | 44.63 | flying | 400 Free Relay (leg 2) | 2025-12-13 | 2025 West Speedo Winter Juniors |
| 200 Freestyle | SCY | 1:38.47 | flat | 800 Free Relay | 2025-12-10 | 2025 West Speedo Winter Juniors |
| 50 Backstroke | SCY | 22.49 | flat | 200 Medley Relay | 2025-12-10 | 2025 West Speedo Winter Juniors |
| 100 Backstroke | SCY | 48.39 | flat | 400 Medley Relay | 2025-12-11 | 2025 West Speedo Winter Juniors |
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
2917 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 1:48.82 | 974 |
| 200 IM SCY | 1:47.69 | 1082 |
| 400 IM SCY | 4:10.09 | 861 |
| 500 FR SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
IMR 17-18 · SCY
4104 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 47.63 | 1081 |
| 100 BR SCY | 59.31 | 841 |
| 100 FL SCY | 47.51 | 1100 |
| 200 IM SCY | 1:47.69 | 1082 |
| 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 47.25
Front half 22.93s · back half 24.32s
100 Backstroke SCY 47.63
Front half 23.13s · back half 24.50s
200 Backstroke SCY 1:48.82
Front half 52.86s · back half 55.96s
100 Breaststroke SCY 59.31
Front half 27.87s · back half 31.44s
100 Butterfly SCY 47.51
Front half 22.21s · back half 25.30s
200 Individual Medley SCY 1:47.69
Front half 49.89s · back half 57.80s
400 Individual Medley SCY 4:10.09
Front half 117.83s · back half 132.26s
200 Freestyle LCM 1:54.91
Front half 56.44s · back half 58.47s
100 Backstroke LCM 59.55
Front half 29.27s · back half 30.28s
200 Backstroke LCM 2:12.82
Front half 64.87s · back half 67.95s
100 Butterfly LCM 56.26
Front half 26.68s · back half 29.58s
200 Individual Medley LCM 2:13.27
Front half 62.21s · back half 71.06s
Progression
Faster times are higher. One card per event, all courses & history.