swimMing Na Xu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.73 | AAA+0.54s to AAAA | 2019-03-07 | 2019 Niagara LSC SCY Championships |
| 100 Freestyle | SCY | 55.22 | AA+0.13s to AAA | 2019-01-11 | 2019 Niagara JR-SR Power Point Champs |
| 200 Freestyle | SCY | 1:59.59 | AA+0.70s to AAA | 2019-03-07 | 2019 Niagara LSC SCY Championships |
| 500 Freestyle | SCY | 5:22.50 | AA+1.81s to AAA | 2021-08-06 | 2021 NI WEBS Back to the Races #7 |
| 50 Backstroke | SCY | 27.08 | AAA+0.09s to AAAA | 2020-01-17 | 2020 NI JR-SR Power Point Champs |
| 100 Backstroke | SCY | 56.94 | AAAA | 2019-03-07 | 2019 Niagara LSC SCY Championships |
| 200 Backstroke | SCY | 2:06.34 | AAA+2.65s to AAAA | 2021-01-23 | 2021 NI NIAQ-FAST DUAL fast pool |
| 100 Breaststroke | SCY | 1:16.37 | BB+1.38s to A | 2019-12-27 | 2019 NI Niagara Winter Classic |
| 200 Breaststroke | SCY | 2:58.07 | B+3.38s to BB | 2019-05-17 | 2019 NI PACK FNR #2 venue |
| 50 Butterfly | SCY | 26.38 | AAAA | 2019-01-11 | 2019 Niagara JR-SR Power Point Champs |
| 100 Butterfly | SCY | 58.13 | AAA+1.34s to AAAA | 2021-08-06 | 2021 NI WEBS Back to the Races #7 venue |
| 200 Butterfly | SCY | 2:16.50 | AA+4.31s to AAA | 2021-04-30 | 2021 NI WEBS Back to the Races #2 |
| 100 Individual Medley | SCY | 1:01.87 | 2019-03-07 | 2019 Niagara LSC SCY Championships | |
| 200 Individual Medley | SCY | 2:16.30 | AA+3.61s to AAA | 2021-04-30 | 2021 NI WEBS Back to the Races #2 |
| 400 Individual Medley | SCY | 4:54.13 | AA+9.04s to AAA | 2021-04-30 | 2021 NI WEBS Back to the Races #2 |
| 50 Freestyle | LCM | 28.84 | AAA+1.25s to AAAA | 2019-01-01 | 2019 Niagara Long Course Championships |
| 100 Freestyle | LCM | 1:03.83 | AA+1.34s to AAA | 2019-07-20 | 2019 NI Niagara LSC LC Championships venue |
| 200 Freestyle | LCM | 2:21.96 | A+0.27s to AA | 2019-07-21 | 2019 NI Niagara LSC LC Championships venue |
| 400 Freestyle | LCM | 5:07.80 | A+9.71s to AA | 2018-12-29 | 2018 Niagara Junior Classic |
| 50 Backstroke | LCM | 31.87 | AAA+0.08s to AAAA | 2019-06-28 | 2019 NI Friday Night at the Races #5 venue |
| 100 Backstroke | LCM | 1:06.48 | AAA+0.19s to AAAA | 2019-01-01 | 2019 Niagara Long Course Championships |
| 200 Backstroke | LCM | 2:26.55 | AAA+4.06s to AAAA | 2019-01-01 | 2019 Niagara Long Course Championships |
| 100 Breaststroke | LCM | 1:36.48 | B+3.49s to BB | 2019-12-28 | 2019 NI Niagara Winter Classic venue |
| 200 Breaststroke | LCM | 3:30.67 | B+9.38s to BB | 2019-05-18 | Niagara Long Course Super Circuit Meet #3 venue |
| 50 Butterfly | LCM | 31.89 | AA+0.60s to AAA | 2019-06-28 | 2019 NI Friday Night at the Races #5 venue |
| 100 Butterfly | LCM | 1:07.10 | AAA+2.81s to AAAA | 2019-01-01 | 2019 Niagara Long Course Championships |
| 200 Butterfly | LCM | 3:08.41 | B+11.12s to BB | 2019-05-31 | 2019 NI Friday Night at the Races #3 |
| 200 Individual Medley | LCM | 2:41.32 | A+1.53s to AA | 2019-06-08 | 2019 NI Niagara Super Circuit #4 - Rochester |
| 400 Individual Medley | LCM | 5:45.82 | A+5.73s to AA | 2019-12-27 | 2019 NI Niagara Winter Classic venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | LCM | 29.28 | flat | 200 Free Relay | 2019-07-20 | 2019 NI Niagara LSC LC Championships |
| 100 Freestyle | LCM | 1:03.43 | flying | 400 Free Relay (leg 2) | 2019-07-21 | 2019 NI Niagara LSC LC Championships |
| 200 Freestyle | LCM | 2:18.92 | flat | 800 Free Relay | 2019-07-18 | 2019 NI Niagara LSC LC Championships |
| 50 Backstroke | LCM | 30.85 | flat | 200 Medley Relay | 2019-07-20 | 2019 NI Niagara LSC LC Championships |
| 100 Backstroke | LCM | 1:07.96 | flat | 400 Medley Relay | 2019-07-19 | 2019 NI Niagara LSC LC 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
4445 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:22.50 | 811 |
| 200 BK SCY | 2:06.34 | 893 |
| 200 BR SCY | 2:58.07 | 480 |
| 200 FL SCY | 2:16.50 | 756 |
| 200 IM SCY | 2:16.30 | 763 |
| 400 IM SCY | 4:54.13 | 742 |
IMR 15-16 · SCY
4020 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:59.59 | 816 |
| 100 BK SCY | 56.94 | 955 |
| 100 BR SCY | 1:16.37 | 602 |
| 100 FL SCY | 58.13 | 884 |
| 200 IM SCY | 2:16.30 | 763 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 55.22 split/total mismatch
Front half 26.82s · back half 28.40s
500 Freestyle SCY 5:22.50 split/total mismatch
200 Backstroke SCY 2:06.34
Front half 62.07s · back half 64.27s
100 Breaststroke SCY 1:16.37 split/total mismatch
Front half 36.38s · back half 39.99s
200 Breaststroke SCY 2:58.07
Front half 85.61s · back half 92.46s
100 Butterfly SCY 58.13
Front half 27.48s · back half 30.65s
200 Butterfly SCY 2:16.50 split/total mismatch
200 Individual Medley SCY 2:16.30 split/total mismatch
400 Individual Medley SCY 4:54.13 split/total mismatch
100 Freestyle LCM 1:03.83
Front half 30.62s · back half 33.21s
200 Freestyle LCM 2:21.96
Front half 68.11s · back half 73.85s
400 Freestyle LCM 5:07.80 split/total mismatch
100 Backstroke LCM 1:06.48 split/total mismatch
Front half 31.89s · back half 34.59s
200 Backstroke LCM 2:26.55 split/total mismatch
100 Breaststroke LCM 1:36.48
Front half 45.55s · back half 50.93s
200 Breaststroke LCM 3:30.67
Front half 100.53s · back half 110.14s
100 Butterfly LCM 1:07.10 split/total mismatch
Front half 31.25s · back half 35.85s
200 Butterfly LCM 3:08.41 split/total mismatch
Front half 48.85s · back half 139.56s
200 Individual Medley LCM 2:41.32 split/total mismatch
400 Individual Medley LCM 5:45.82
Front half 160.09s · back half 185.73s
Progression
Faster times are higher. One card per event, all courses & history.