Novak Djokovic will move above Roger Federer to No 1 in the world rankings next week and is guaranteed to retain the top spot until the end of the year, the ATP Tour said.
Djokovic has won five tournaments this year -- including the Australian Open and Masters series titles in Miami, Canada and Shanghai - and pocketed more than $8 million in prize money.
The 25-year-old, who is scheduled to compete at the Paris Masters this week, will be presented with a trophy to recognise his feat at next week's season-ending championships in London, the ATP said.
Almagro's Tour Finals hopes dented by Ferrer
Raonic, Isner crash out in Valencia; Cilic through
Is India becoming irrelevant to US?
Del Potro stuns Federer to win Basel title
JLR gets Chinese govt nod for JV with Chery