Edmund has moved up to 24th place as he reaps the benefit of reaching the Australian Open semi-finals, while former world number one Murray, out injured since January and recovering from a hip operation, drops eight places to 29th.
Browsing: Juan Martin del Potro
Federer had to work hard on Sunday before dispatching Del Potro 6-7 6-4 6-3, making amends for two final defeats to the Argentine in Basel in 2012 and 2013.
Top seed Federer, bidding for a record eighth title at his hometown event, was merciless with third seed David Goffin, dismissing the Belgian 6-1, 6-2 in one hour as he reached his 13th Basel final and eighth of the season.
Nadal, runner-up in 2009, was pushed hard by the battling fourth seed, who put his booming forehand to good use but failed to derail the Spaniard.
His strong serve was the key as he played aces after aces, winners after winners overwhelming his teenage opponent
Coming off the back of a superhuman effort to beat Dominic Thiem over five sets, Del Potro was the clear underdog coming into the match
After his first round match here former French Open semi-finalist Gulbis had said: ‘In my brain I’m still No 10 in the world’ – and this was top-10 tennis from the Latvian as he dismantled the No 29 seed with a near-faultless performance.
The world No 1 came through an absorbing contest on a sweltering Court Suzanne Lenglen 6-7 (3-7 ) 6-2 6-2 7-6 (7-3)
Del Potro has been plagued by wrist problems over the past three years, but he returned to the ATP Tour last season, reaching the Olympic final and helping Argentina win the Davis Cup