Jon Rahm took a little over four years to go from rookie on Tour to world No 1 – but how does the Spaniard rank in terms of the fastest to reach the milestone mark?
Tiger Woods – 290 days
Jordan Spieth – 2 years, 245 days
Jon Rahm – 4 years, 27 days
Rory McIlroy – 4 years, 170 days
