Andy Murray gets walkover in Miami

Andy Murray has received a walkover into the last 16 of the Miami Masters after Milos Raonic withdrew from their match with an ankle injury.

The world number 26 picked up the problem during a doubles match on Saturday.

"Playing against an opponent the calibre of Andy at only 40% fitness didn't make much sense," said the Canadian.

The world number four will now take on Gilles Simon in the next round.