Uganda’s Joshua Cheptegei produced an astonishing run in Monaco to break the 16-year-old 5,000m world record by almost two seconds.
The 23-year-old, who won the 10,000m world title in Doha last year, had promised he would take a shot at the time but success seemed unlikely.
However, guided by trackside lights illustrating world record pace, he came home in 12 minutes 35.36 seconds.
The previous mark, set by Ethiopian great Kenenisa Bekele, was 12:37.35.
