Andy Murray crowned World No. 1

Great Britain's Andy Murray during his quarter-final against Tomas Berdych of the Czech Republic in Paris on Friday. Pic/Getty Images

Paris: Britain's Andy Murray became the new World No. 1 on Saturday after Milos Raonic withdrew from their Paris Masters semi-final with injury.

The walkover will see Murray, 29, move to the top of the rankings for the first time in his career after replacing long-time incumbent Novak Djokovic.

The Scot's climb to the ATP rankings' summit caps a remarkable year which has seen him win a second Wimbledon crown and mount a successful defence of his Olympic title in Rio.

Raonic said he had suffered a muscle tear in his right leg in his previous match, sending Murray through to face John Isner in today's final. "This morning I had trouble waking up and getting out of bed. So I went to sort of clear any serious diagnosis," said Raonic, who hurt himself in Friday's quarter-final win over Jo-Wilfried Tsonga.

"Did some tests. Did an MRI half an hour ago, let's say. They found that I have a tear, Grade 1 tear in the right quad.

Murray had needed to reach the final to supplant Djokovic at the top following the Serb's defeat to Marin Cilic in the last eight.

But he didn't need to hit a single ball as Raonic announced his withdrawal in a hastily-arranged press conference.

Murray will be confirmed as the new number one when the latest rankings are released on Monday. He will meet Isner as he targets a maiden Paris Masters title after the big-serving American toppled Cilic 6-4, 6-3 in the first semi-finals.
Meanwhile, Marin Cilic dumped a Djokovic out of the quarter-finals on Friday.

Cilic had lost all 14 previous meetings with Djokovic but cast the Serb's 122-week reign at the top of the rankings into serious doubt with a 6-4, 7-6 (7/2) victory.