On 11 July 2019, Sokwakhana Zazini (South Africa) ran their 400 metres hurdles in 48.73 seconds at Napoli (Universiade).
| 17.67 |
| 8.84 |
15 L |
L |
| H5 | 4.04(+0.08) | 21.71 | 8.66 | 15 L | L |
| H6 | 4.11(+0.07) | 25.82 | 8.52 | 15 L | L |
| H7 | 4.19(+0.08) | 30.01 | 8.35 | 16 R | R |
| H8 | 4.37(+0.18) | 34.38 | 8.01 | 16 L | L |
| H9 | 4.44(+0.07) | 38.82 | 7.88 | 17 L | L |
| H10 | 4.56(+0.12) | 43.38 | 7.68 | 17 L | L |
| Finish | 5.35 | 48.73 | 7.48 | — — | — |
Avg. interval
4.14s
Std. deviation
0.26
Deceleration
Stride pattern
Very consistent intervals (σ=0.26s).
Fastest interval: 3.7s (H2–H3).
Excellent fatigue resistance: only 6.6% speed loss between the first and second halves (8.52 → 7.96 m/s).
Steady stride pattern.
Lead leg alternation: 9× Left, 1× Right.