Davis Cup: Andre Agassi praises Andy Murray
Former world number one Andre Agassi believes Andy Murray will win more Grand Slams as his "skill set on the court is unique".
He also adds that "this is the golden age of tennis" thanks to the top four of Murray, Novak Djokovic, Rafael Nadal and Roger Federer.
Murray will be in Davis Cup action for Great Britain against the United States on Friday and Agassi praises US captain Jim Courier for having a great work ethic.
Coverage of Great Britain v United States in the Davis Cup begins on BBC Two and the BBC Sport website from 1330 GMT on Friday.