Park Record Media Center

A general view of Rod Laver Arena as Roger Federer of Switzerland plays a forehand in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) ( 464794277 )

Tennis fans with their face painted in the flags of Spain and Switzerland pose for photos ahead of the semifinal match between Roger Federer of Switzerland and Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Chris Hyde/Getty Images) ( 464765215 )

Rafael Nadal of Spain celebrates after defeating Roger Federer of Switzerland during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Aaron Favila) ( APTOPIX Australian Open Tennis )

Roger Federer of Switzerland serves in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images) ( 464779837 )

Rafael Nadal of Spain signs autographs for fans after defeating Roger Federer of Switzerland in their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014. (AP Photo/Aaron Favila) ( Australian Open Tennis )

Rafael Nadal of Spain ties his headband during a break in the semifinal against Roger Federer of Switzerland at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Andrew Brownbill) ( Australian Open Tennis )

Roger Federer of Switzerland looks on in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) ( 464799667 )

Rafael Nadal of Spain plays a backhand in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images) ( 464794923 )

Roger Federer of Switzerland makes a forehand return to Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Rick Rycroft) ( Australian Open Tennis )

Rafael Nadal of Spain receives medical attention on a blister on his hand during a medical timeout in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images) ( 464794935 )

Roger Federer of Switzerland wipes the sweat from his face as he plays Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Andrew Brownbill) ( Australian Open Tennis )

Roger Federer of Switzerland makes a forehand return to Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Eugene Hoshiko) ( Australian Open Tennis )

Rafael Nadal of Spain follows through on a shot to Roger Federer of Switzerland during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Aaron Favila) ( Australian Open Tennis )

Roger Federer of Switzerland plays a backhand in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images) ( 464800147 )

Rafael Nadal of Spain plays a backhand in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images) ( 464793943 )

Rafael Nadal of Spain throws a towel between points as he plays Roger Federer of Switzerland during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Andrew Brownbill) ( Australian Open Tennis )

Rafael Nadal of Spain celebrates after defeating Roger Federer of Switzerland during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Aaron Favila) ( Australian Open Tennis )

Former tennis player Pete Sampras watches Roger Federer of Switzerland in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) ( 464799447 )

Roger Federer of Switzerland makes a backhand return to Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Rick Rycroft) ( Australian Open Tennis )

Roger Federer of Switzerland wipes his face in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images) ( 464795763 )

Rafael Nadal of Spain celebrates winning his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images) ( 464800729 )

Rafael Nadal of Spain, right, is congratulated by Roger Federer of Switzerland at the net after Nadal won their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Aaron Favila) ( Australian Open Tennis )

Rafael Nadal of Spain celebrates winning his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Matt King/Getty Images) ( 464806033 )

Rafael Nadal of Spain wipes his face in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Matt King/Getty Images) ( 464799623 )

Rafael Nadal of Spain plays a forehand in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images) ( 464775517 )

Roger Federer of Switzerland celebrates a point in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images) ( 464800195 )

Roger Federer of Switzerland leaps for a shot to Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Eugene Hoshiko) ( Australian Open Tennis )

Rafael Nadal of Spain plays a backhand in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images) ( 464793947 )

Roger Federer of Switzerland plays a forehand in his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images) ( 464775659 )

Rafael Nadal of Spain celebrates a point in his semifinal match against Roger Federer of Switzerland during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images) ( 464779849 )

Roger Federer of Switzerland walks not he court between points as he plays Rafael Nadal of Spain during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Eugene Hoshiko) ( Australian Open Tennis )

Roger Federer of Switzerland leaves the court after losing his semifinal match against Rafael Nadal of Spain during day 12 of the 2014 Australian Open at Melbourne Park on January 24, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images) ( 464800719 )

Rafael Nadal of Spain walks off the court after defeating Roger Federer of Switzerland in their semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24, 2014.(AP Photo/Aaron Favila) ( Australian Open Tennis )