Michael Johnson: "Van Niekerk can do the double"
Up next

Playing in... 5 secs Pause

Michael Johnson: "Van Niekerk can do the double"

The four-time Olympic champion is also confident Usain Bolt will win his last individual 100m at the London World Championships.

Michael Johnson: "Van Niekerk can do the double"

The four-time Olympic champion is also confident Usain Bolt will win his last individual 100m at the London World Championships.