SouthAfrica’s Wayde Van Niekerk had to be taken to the hospital here last night after winning the world 400m title in 43.48sec, the fastest time run since 2007.

The23-year-old looked understandably exhausted after his run in humid conditions and ended up laying on the track as team officials spoke to him.

Medical sources said: “His vital signs were unstable and he had to be transferred (to the hospital) for better control and treatment.”

van Niekerk was discharged from the hospital shortly before 23.45 local time.

South African’s prodigious effort was more than matched on the day by a winning javelin throw of 92.72m from Kenya’s Julius Yego, the best thrown since JanZelezny won the same title in Edmonton in 2001 with 92.80.