swimNathan Xu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.23 | AAA+0.54s to AAAA·Futures ✓+0.74s to Winter JNs | 2024-12-21 | 2024 WA State Senior Short Course Champsvenue |
| 100 Freestyle | SCY | 45.91 | AAA+0.42s to AAAA·Futures ✓+1.02s to Winter JNs | 2025-01-01 | 2025 USA Swimming Speedo Championship Series |
| 200 Freestyle | SCY | 1:44.39 | AAA+3.80s to AAAA·Sectionals ✓+2.80s to Futures | 2024-10-05 | 2024 PN SMAC Fall Kick-Off Invitationalvenue |
| 100 Backstroke | SCY | 49.26 | AAA+0.07s to AAAA·Futures ✓+0.07s to Winter JNs | 2024-12-07 | 2024 Tualatin Hills Holiday Classicvenue |
| 200 Backstroke | SCY | 1:53.93 | AA+0.44s to AAA·Sectionals ✓+1.14s to Futures | 2023-03-11 | 2023 Northwest Spring Speedo Sectionalsvenue |
| 100 Butterfly | SCY | 48.79 | AAAA·Futures ✓+0.10s to Winter JNs | 2024-12-06 | 2024 Tualatin Hills Holiday Classicvenue |
| 200 Butterfly | SCY | 1:52.91 | AAA+2.22s to AAAA·Futures ✓+3.82s to Winter JNs | 2023-03-09 | 2023 Northwest Spring Speedo Sectionalsvenue |
| 50 Freestyle | LCM | 24.74 | AAA+0.75s to AAAA·Sectionals ✓+0.15s to Futures | 2024-07-27 | 2024 USAS Futures Championships-Minneapolisvenue |
| 100 Freestyle | LCM | 55.44 | AA+0.25s to AAA·Sectionals ✓+1.85s to Futures | 2024-03-14 | 2024 Northwest Spring Speedo Sectionalsvenue |
| 200 Freestyle | LCM | 2:08.28 | A+2.09s to AA·+4.79s to Sectionals | 2024-06-27 | 2024 PN CSC 103rd Annual Senior Seattle Openvenue |
| 50 Backstroke | LCM | 32.17 | BB+0.18s to A·+3.48s to Sectionals | 2019-06-02 | 2019 IE VS Apple Capitalslow pool |
| 100 Backstroke | LCM | 59.90 | AAA+1.21s to AAAA·Futures ✓+1.11s to Winter JNs | 2024-03-15 | 2024 Northwest Spring Speedo Sectionalsvenue |
| 200 Backstroke | LCM | 2:15.53 | AA+1.74s to AAA·Sectionals ✓+3.64s to Futures | 2024-06-30 | 2024 PN SMAC Summer Classic Invitationalvenue |
| 50 Breaststroke | LCM | 33.11 | AA+0.92s to AAA·+1.12s to Sectionals | 2024-06-29 | 2024 PN SMAC Summer Classic Invitationalvenue |
| 100 Breaststroke | LCM | 1:14.55 | A+2.96s to AA·+1.76s to Sectionals | 2024-06-01 | 2024 PN VAST Summer Sprints and Distance Chalvenue |
| 50 Butterfly | LCM | 28.42 | AA+1.03s to AAA·+1.03s to Sectionals | 2019-06-01 | 2019 IE VS Apple Capitalslow pool |
| 100 Butterfly | LCM | 57.95 | AAA+1.66s to AAAA·Futures ✓+1.46s to Winter JNs | 2024-07-27 | 2024 USAS Futures Championships-Minneapolisvenue |
| 200 Individual Medley | LCM | 2:18.05 | AA+2.36s to AAA·Sectionals ✓+5.26s to Futures | 2024-06-29 | 2024 PN SMAC Summer Classic Invitationalvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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 | 21.50 | flat | 200 Free Relay | 2023-03-09 | 2023 Northwest Spring Speedo Sectionals |
| 50 Freestyle | SCY | 21.13 | flying | 200 Medley Relay (leg 4) | 2024-12-21 | 2024 WA State Senior Short Course Champs |
| 100 Freestyle | SCY | 46.21 | flying | 400 Medley Relay (leg 4) | 2024-12-20 | 2024 WA State Senior Short Course Champs |
| 100 Freestyle | SCY | 45.41 | flying | 400 Free Relay (leg 4) | 2025-02-22 | 2025 4A Boys State Swim/Dive Champs |
| 200 Freestyle | SCY | 1:40.40 | flat | 800 Free Relay | 2025-03-13 | 2025 MN RSC CZ North Section Spring Champions |
| 200 Freestyle | SCY | 1:43.15 | flying | 800 Free Relay (leg 2) | 2024-12-21 | 2024 WA State Senior Short Course Champs |
| 100 Backstroke | SCY | 51.36 | flat | 400 Medley Relay | 2025-03-15 | 2025 MN RSC CZ North Section Spring Champions |
| 50 Butterfly | SCY | 21.96 | flying | 200 Medley Relay (leg 3) | 2025-02-22 | 2025 4A Boys State Swim/Dive Champs |
| 100 Butterfly | SCY | 49.82 | flying | 400 Medley Relay (leg 3) | 2023-03-12 | 2023 Northwest Spring Speedo Sectionals |
| 50 Freestyle | LCM | 24.93 | flat | 200 Free Relay | 2024-07-19 | 2024 PN LC Senior Championships |
| 100 Freestyle | LCM | 55.37 | flying | 400 Free Relay (leg 2) | 2024-07-26 | 2024 USAS Futures Championships-Minneapolis |
| 200 Freestyle | LCM | 2:02.41 | flat | 800 Free Relay | 2024-07-18 | 2024 PN LC Senior Championships |
| 50 Backstroke | LCM | 28.07 | flat | 200 Medley Relay | 2024-07-20 | 2024 PN LC Senior Championships |
| 100 Butterfly | LCM | 1:04.89 | flying | 400 Medley Relay (leg 3) | 2019-06-01 | 2019 IE VS Apple Capital |
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
1768 points (2/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 1:53.93 | 849 |
| 200 FL SCY | 1:52.91 | 919 |
| 500 FR SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 IM SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · LCM
4011 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:08.28 | 714 |
| 100 BK LCM | 59.90 | 916 |
| 100 BR LCM | 1:14.55 | 665 |
| 100 FL LCM | 57.95 | 901 |
| 200 IM LCM | 2:18.05 | 815 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 45.91 split/total mismatch
200 Freestyle SCY 1:44.39
Front half 50.08s · back half 54.31s
100 Backstroke SCY 49.26
Front half 23.76s · back half 25.50s
200 Backstroke SCY 1:53.93 RT 0.71s
Front half 55.90s · back half 58.03s
100 Butterfly SCY 48.79
Front half 22.59s · back half 26.20s
200 Butterfly SCY 1:52.91 RT 0.62s
Front half 54.03s · back half 58.88s
200 Freestyle LCM 2:08.28
Front half 62.94s · back half 65.34s
200 Backstroke LCM 2:15.53
Front half 65.62s · back half 69.91s
100 Butterfly LCM 57.95
Front half 27.13s · back half 30.82s
200 Individual Medley LCM 2:18.05 RT 0.59s
Front half 63.13s · back half 74.92s
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.