On 11 July 2026, Yan Manuel Vazquez (Puerto Rico) ran their 400 metres hurdles in 50.24 seconds at Tlaxcala (North America Championships U23).
| 18.50 |
| 8.33 |
14 R |
R |
| H5 | 4.20(0.00) | 22.70 | 8.33 | 14 L | L |
| H6 | 4.43(+0.23) | 27.13 | 7.90 | 14 R | R |
| H7 | 4.47(+0.04) | 31.60 | 7.83 | 14 L | L |
| H8 | 4.50(+0.03) | 36.10 | 7.78 | 15 L | L |
| H9 | 4.57(+0.07) | 40.67 | 7.66 | 15 L | L |
| H10 | 4.57(0.00) | 45.24 | 7.66 | 15 L | L |
| Finish | 5.00 | 50.24 | 8.00 | — — | — |
Avg. interval
4.35s
Std. deviation
0.19
Deceleration
Stride pattern
Very consistent intervals (σ=0.19s).
Fastest interval: 4.07s (H2–H3).
Very low deceleration (4.2%: 8.15 → 7.81 m/s), a likely sign of an over-managed first half.
Steady stride pattern.
Lead leg alternation: 7× Left, 3× Right.