swimMantong Xu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 33.83 | B+2.14s to BB | 2025-01-01 | 2025 CO Great Pumpkin Pentathlon |
| 100 Freestyle | SCY | 1:12.36 | B+2.97s to BB | 2026-02-14 | 2026 CO Loveland Last Chance Sweetheart Meet venue |
| 50 Backstroke | SCY | 40.70 | +1.91s to B | 2025-01-01 | 2025 CO Great Pumpkin Pentathlon |
| 100 Backstroke | SCY | 1:23.53 | B+3.74s to BB | 2025-12-13 | 2025 CO NJ Blizzard Invite fast pool |
| 50 Breaststroke | SCY | 46.73 | +2.74s to B | 2026-01-10 | 2026 CO NJ Narwhal Invitational fast pool |
| 100 Breaststroke | SCY | 1:42.66 | +6.17s to B | 2026-02-14 | 2026 CO Loveland Last Chance Sweetheart Meet venue |
| 50 Butterfly | SCY | 37.65 | +0.66s to B | 2026-02-14 | 2026 CO Loveland Last Chance Sweetheart Meet venue |
| 100 Individual Medley | SCY | 1:24.84 | B+5.65s to BB | 2026-02-14 | 2026 CO Loveland Last Chance Sweetheart Meet venue |
| 50 Freestyle | LCM | 38.06 | B+2.07s to BB | 2026-06-06 | 2026 CO NJ Summer Solstice Invite fast pool |
| 100 Backstroke | LCM | 1:37.39 | B+4.70s to BB | 2026-06-06 | 2026 CO NJ Summer Solstice Invite fast pool |
| 100 Breaststroke | LCM | 2:02.25 | +11.86s to B | 2025-05-31 | 2025 CO Barracuda Summer Sizzler Invite venue |
| 50 Butterfly | LCM | 40.87 | B+2.08s to BB | 2026-06-06 | 2026 CO NJ Summer Solstice Invite fast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 | 33.28 | flying | 200 Free Relay (leg 3) | 2025-12-13 | 2025 CO NJ Blizzard Invite |
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 11-12 · SCY
759 points (2/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:23.53 | 422 |
| 100 BR SCY | 1:42.66 | 337 |
| 500 FR SCY | — | 0 |
| 100 FL SCY | — | 0 |
| 200 IM SCY | — | 0 |
IMR 11-12 · SCY
1540 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 40.70 | 365 |
| 50 BR SCY | 46.73 | 351 |
| 50 FL SCY | 37.65 | 397 |
| 100 IM SCY | 1:24.84 | 427 |
| 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 1:12.36
Front half 34.84s · back half 37.52s
100 Backstroke SCY 1:23.53
100 Breaststroke SCY 1:42.66
Front half 49.51s · back half 53.15s
100 Individual Medley SCY 1:24.84
Front half 39.22s · back half 45.62s
100 Backstroke LCM 1:37.39
Front half 49.53s · back half 47.86s
100 Breaststroke LCM 2:02.25
Front half 58.77s · back half 63.48s
Progression
Faster times are higher. One card per event, all courses & history.