On 10 August 2017, Ristananna Tracey (Jamaica) ran their 400 metres hurdles in 53.74 seconds at Londres (World Championships). It's also their new personal best.
On 4h/world, this time earns Ristananna a Top 16% World ranking.
| 18.86 |
| 8.25 |
15 L |
L |
| H5 | 4.32(+0.08) | 23.18 | 8.10 | 15 L | L |
| H6 | 4.56(+0.24) | 27.74 | 7.68 | 16 R | R |
| H7 | 4.72(+0.16) | 32.46 | 7.42 | 16 L | L |
| H8 | 5.00(+0.28) | 37.46 | 7.00 | 17 L | L |
| H9 | 5.12(+0.12) | 42.58 | 6.84 | 17 L | L |
| H10 | 5.20(+0.08) | 47.78 | 6.73 | 17 L | L |
| Finish | 5.96 | 53.74 | 6.71 | — — | — |
Avg. interval
4.59s
Std. deviation
0.42
Deceleration
Stride pattern
New personal best!
Fastest interval: 4.08s (H2–H3).
Deceleration of 11.8% between the first half (7.98 m/s) and the second half (7.04 m/s).
Stutter on H8.
Lead leg alternation: 9× Left, 1× Right.
All-time fastest sectors
All-time slowest sectors
Max speed
8.58m/s
Avg speed
7.44m/s
Std. deviation
0.42s