swimHayden Nielsen
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.44 | A+0.75s to AA·+0.55s to Sectionals | 2024-03-02 | 2024 Gulf 13 & Over Champs (SHRK) venue |
| 100 Freestyle | SCY | 50.18 | A+0.29s to AA·+0.69s to Sectionals | 2024-03-03 | 2024 Gulf 13 & Over Champs (SHRK) venue |
| 200 Freestyle | SCY | 1:46.02 | AA+0.63s to AAA·Sectionals ✓+4.43s to Futures | 2026-03-13 | 2026 Bellevue Club Premier Invite- Approved fast pool |
| 500 Freestyle | SCY | 4:47.74 | AA+1.05s to AAA·Sectionals ✓+10.65s to Futures | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 1000 Freestyle | SCY | 9:59.86 | AAA+24.97s to AAAA·Sectionals ✓+25.57s to Futures | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 1650 Freestyle | SCY | 16:39.03 | AAA+40.84s to AAAA·Sectionals ✓+33.54s to Futures | 2025-11-07 | Sharks November Invitational |
| 50 Backstroke | SCY | 37.50 | +6.61s to B·+11.11s to Sectionals | 2025-01-17 | 2025 TWST Speedo Winter Classic Invitational |
| 100 Backstroke | SCY | 58.16 | BB+1.97s to A·+1.67s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 200 Backstroke | SCY | 2:04.60 | BB+0.81s to A·Sectionals ✓+11.81s to Futures | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 50 Breaststroke | SCY | 38.78 | +3.19s to B·+8.49s to Sectionals | 2025-01-17 | 2025 TWST Speedo Winter Classic Invitational |
| 100 Breaststroke | SCY | 1:01.42 | AA+2.53s to AAA·Sectionals ✓+3.43s to Futures | 2025-03-07 | Meet Results for |
| 200 Breaststroke | SCY | 2:11.82 | AA+3.83s to AAA·Sectionals ✓+3.83s to Futures | 2026-03-12 | 2026 Bellevue Club Premier Invite- Approved fast pool |
| 100 Butterfly | SCY | 56.23 | BB+0.04s to A·+2.64s to Sectionals | 2025-09-27 | Sharks Pentathlon 2025 |
| 200 Butterfly | SCY | 2:06.23 | A+5.04s to AA·+4.74s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 200 Individual Medley | SCY | 1:58.84 | AA+2.65s to AAA·Sectionals ✓+4.95s to Futures | 2026-03-15 | 2026 Bellevue Club Premier Invite- Approved fast pool |
| 400 Individual Medley | SCY | 4:18.24 | AA+7.45s to AAA·Sectionals ✓+11.25s to Futures | 2026-03-13 | 2026 Bellevue Club Premier Invite- Approved fast pool |
| 50 Freestyle | LCM | 27.15 | A+0.86s to AA·+0.86s to Sectionals | 2024-07-13 | 2024 Long Course Gulf Age Group Championships venue |
| 100 Freestyle | LCM | 56.84 | AA+1.65s to AAA·+0.15s to Sectionals | 2025-06-08 | 2025 ST SRG Arena Summer Sizzler fast pool |
| 200 Freestyle | LCM | 2:03.29 | AA+2.60s to AAA·Sectionals ✓+5.50s to Futures | 2025-07-31 | 2025 Southern Zone Senior LC Championships venue |
| 400 Freestyle | LCM | 4:31.01 | A+2.02s to AA·+7.92s to Sectionals | 2026-01-01 | FCST Summer Splash - FULL |
| 800 Freestyle | LCM | 9:14.61 | AA+15.82s to AAA·+5.62s to Sectionals | 2025-07-30 | 2025 Southern Zone Senior LC Championships venue |
| 1500 Freestyle | LCM | 17:39.55 | AA+28.56s to AAA·Sectionals ✓+60.56s to Futures | 2026-01-01 | FCST Summer Splash - FULL |
| 2000 Freestyle | LCM | 26:51.00 | 2024-10-13 | Sharks Fall Open Water Extravaganza 2024 venue | |
| 5000 Freestyle | LCM | 74:11.00 | 2024-04-14 | 2024 Gulf Open Water Meet All-Star Qualifying venue | |
| 50 Backstroke | LCM | 30.68 | A+0.09s to AA·Sectionals ✓+2.79s to Futures | 2024-07-25 | 2024 Southern Zone Senior LC Championships venue |
| 100 Backstroke | LCM | 1:06.26 | A+2.07s to AA·+0.07s to Sectionals | 2024-07-13 | 2024 Long Course Gulf Age Group Championships venue |
| 200 Backstroke | LCM | 2:28.71 | BB+2.82s to A·+4.42s to Sectionals | 2025-01-01 | Texas Elite Swim Team |
| 100 Breaststroke | LCM | 1:11.28 | AA+2.89s to AAA·Sectionals ✓+3.09s to Futures | 2025-08-01 | 2025 Southern Zone Senior LC Championships venue |
| 200 Breaststroke | LCM | 2:39.03 | A+2.54s to AA·Sectionals ✓+9.94s to Futures | 2025-07-30 | 2025 Southern Zone Senior LC Championships venue |
| 100 Butterfly | LCM | 1:02.41 | A+0.82s to AA·+0.82s to Sectionals | 2025-08-01 | 2025 Southern Zone Senior LC Championships venue |
| 200 Butterfly | LCM | 2:22.41 | A+4.52s to AA·+2.22s to Sectionals | 2026-01-01 | FCST Summer Splash - FULL |
| 200 Individual Medley | LCM | 2:17.37 | AA+1.68s to AAA·Sectionals ✓+4.58s to Futures | 2025-08-02 | 2025 Southern Zone Senior LC Championships venue |
| 400 Individual Medley | LCM | 5:04.81 | A+0.02s to AA·+6.22s to Sectionals | 2025-06-06 | 2025 ST SRG Arena Summer Sizzler fast pool |
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 |
|---|---|---|---|---|---|---|
| 200 Freestyle | SCY | 1:48.74 | flying | 800 Free Relay (leg 3) | 2024-12-07 | 2024 Gulf Southern Senior Championships |
| 100 Butterfly | SCY | 53.28 | flying | 400 Medley Relay (leg 3) | 2026-03-15 | 2026 Bellevue Club Premier Invite- Approved |
| 200 Freestyle | LCM | 2:02.58 | flying | 800 Free Relay (leg 3) | 2024-07-25 | 2024 Southern Zone Senior 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 17-18 · SCY
4527 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:47.74 | 848 |
| 200 BK SCY | 2:04.60 | 649 |
| 200 BR SCY | 2:11.82 | 786 |
| 200 FL SCY | 2:06.23 | 657 |
| 200 IM SCY | 1:58.84 | 805 |
| 400 IM SCY | 4:18.24 | 782 |
IMR 17-18 · LCM
3791 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:03.29 | 804 |
| 100 BK LCM | 1:06.26 | 677 |
| 100 BR LCM | 1:11.28 | 761 |
| 100 FL LCM | 1:02.41 | 722 |
| 200 IM LCM | 2:17.37 | 827 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.18
Front half 24.44s · back half 25.74s
200 Freestyle SCY 1:46.02
500 Freestyle SCY 4:47.74 split/total mismatch
1000 Freestyle SCY 9:59.86 split/total mismatch
100 Backstroke SCY 58.16 split/total mismatch
Front half 28.09s · back half 30.07s
200 Backstroke SCY 2:04.60 split/total mismatch
200 Breaststroke SCY 2:11.82 RT 0.73s
Front half 62.63s · back half 69.19s
100 Butterfly SCY 56.23
Front half 27.03s · back half 29.20s
200 Butterfly SCY 2:06.23 split/total mismatch
200 Individual Medley SCY 1:58.84 RT 0.67s
Front half 56.95s · back half 61.89s
400 Individual Medley SCY 4:18.24 RT 0.73s
Front half 126.46s · back half 131.78s
200 Freestyle LCM 2:03.29
Front half 59.60s · back half 63.69s
800 Freestyle LCM 9:14.61
Front half 276.85s · back half 277.76s
200 Backstroke LCM 2:28.71 split/total mismatch
Front half 72.30s · back half 76.41s
100 Breaststroke LCM 1:11.28
Front half 33.49s · back half 37.79s
200 Breaststroke LCM 2:39.03
Front half 76.87s · back half 82.16s
100 Butterfly LCM 1:02.41
Front half 29.03s · back half 33.38s
200 Individual Medley LCM 2:17.37
Front half 65.75s · back half 71.62s
400 Individual Medley LCM 5:04.81
Front half 148.37s · back half 156.44s
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.