Sinner is No. 29! Meet the World No. 1s

Jannik Sinner is the 29th player to reach World No. 1 in the history of the PIF ATP Rankings.

Ilie Nastase was the first in 1973 and, 51 years later, Sinner has joined the elite group, becoming the first Italian to accomplish the feat.

ATPTour.com is celebrating Sinner's ascent to No. 1 with a series of profiles of all 29 legends who have climbed to the pinnacle of mens' tennis.

Jannik Sinner: The flying fox who climbed to the very top

All smiles: Carlos Alcaraz's joyful game carried him to No. 1

Daniil Medvedev: No. 1, One of a kind

Andy Murray: The man who ended the Big Three’s No. 1 reign

Novak Djokovic: The complete player

Rafael Nadal: The ultimate competitor

Federer On No. 1: 'I decided I would like to stay there'

Andy Roddick: The competitive rocket

Juan Carlos Ferrero: The humble mosquito

Lleyton Hewitt: Intense Aussie reached pinnacle at 20

Guga On No. 1: 'Highlight of my career by far'

Marat Safin: The man of fire

Patrick Rafter: When nice guys finish first

Yevgeny Kafelnikov: The poker-faced workhorse

Carlos Moya: A Spanish pioneer

Marcelo Rios: The first South American No. 1

Thomas Muster: Tragedy to top spot

Andre Agassi: From rebel to philosopher

Pete Sampras: 'I let my racquet do the talking'

Jim Courier: 'You have to be extreme to be exceptional'

Boris Becker: From Wunderkind to World No. 1

Stefan Edberg: The No. 1 with grit & grace

Mats Wilander: 'Every ball comes back'

Ivan Lendl: The monk in the iron mask

John McEnroe: An artist at No. 1

Bjorn Borg: The Ice Man & Elvis, all in one

Connors on No.1: 'A lonely spot, but it has the best view'

John Newcombe: The man behind the mustache

Ilie Nastase, The first No. 1