Photos: Australian Open 2015

Andy Murray, left, congratulates Novak Djokovic after his victory in the Australian Open final on Sunday in Melbourne.  (Clive Brunskill / Getty Images)

Novak Djokovic gives the winner’s trophy a kiss after defeating Andy Murray in the Australian Open championship match on Sunday in Melbourne.  (Clive Brunskill / Getty Images)

Champion Novak Djokovic and runner-up Andy Murray pose during the awards presentation after the Australian Open final on Sunday.  (Paul Crock / AFP / Getty Image)

Novak Djokovic gives his coach, Boris Becker, a hug after winning the Australian Open.  (William West / AFP / Getty Images)

Novak Djokovic gets into a backhand during the Australian Open final against Andy Murray on Sunday night in Melbourne.  (Made Nagi / EPA)

Novak Djokovic reacts to winning a point against Andy Murray in the Australian Open final on Sunday night in Melbourne.  (Made Nagi / EPA)

Andy Murray returns a shot against Novak Djokovic in the Australian Open final.  (Mal Fairclough / AFP / Getty Images)

Novak Djokovic is given medical attention after injuring his thumb while slipping to the court in the Australian Open final.  (Made Nagi / EPA)

Andy Murray celebrates after winning a point against Novak Djokovic in the Australian Open final.  (Clive Brunskill / Getty Images)

Novak Djokovic argues with the umpire during a break in play of the Australian Open final.  (Made Nagi / EPA)

Andy Murray drives a forehand back toward Novak Djokovic during the Australian Open final.  (Mal Fairclough / AFP / Getty Images)

Serena Williams reacts after beating Maria Sharapova in the Australian Open final on Saturday night in Melbourne.  (Barbara Walton / EPA)

Maria Sharapova congratulates Serena Williams after her victory in the Australian Open final.  (Cameron Spencer / Getty Images)

Serena Williams poses with the winner’s trophy after defeating Maria Sharapova in the Australian Open women’s final.  (Clive Brunskill / Getty Images)

Serena Williams, left, joins former champion Martina Navratilova, center, and runner-up Maria Sharapova for the trophy presentation after winning the Australian Open on Saturday in Melbourne.  (Clive Brunskill / Getty Images)

Serena Williams tracks down a return against Maria Sharapova in their Australian Open final on Saturday night in Melbourne.  (Manan Vatsyayana AFP / Getty Images)

Serena Williams reacts after winning a point against Maria Sharapova in the Australian Open final on Jan. 31, 2015.  (Filip Singer / EPA)

Maria Sharapova goes for a forehand return against Serena Williams in their Australian Open finals match.  (Greg Wood / AFP / Getty Images)

Serena Williams hits a backhand against Maria Sharapova in the women’s final at the Australian Open.  (Cameron Spencer / Getty Images)

Maria Sharapova lunges for a backhand return against Serena Williams in the Australian Open final.  (Quinn Rooney / Getty Images)

Novak Djokovic celebrates after defeating Stan Wawrinka in five sets in an Australian Open semifinal on Friday night in Melbourne.  (Scott Barbour / Getty Images)

Stan Wawrinka volleys a shot back to Novak Djokovic during their Australian Open semifinal on Saturday in Melbourne.  (Mal Fairclough / AFP / Getty Images)

Novak Djokovic chases down a backhand return during his five-set victory over defending champion Stan Wawrinka in an Australian Open semifinal on Saturday in Melbourne.  (Michael Dodge / Getty Images)

Andy Murray returns a shot against Tomas Berdych during their semifinal match at the Australian Open on Thursday.  (Paul Crock / AFP / Getty Images)

Andy Murray reacts after winning a point against Tomas Berdych during their semifinal match of the Australian Open on Thursday.  (Barbara Walton / EPA)

Madison Keys beat Venus Williams, 6-3, 4-6, 6-4, in the quarterfinals of the Australian Open. Keyes will face Serena Williams in the semifinal round.  (Barbara Walton / EPA)

Serena Williams and Madison Keys meet at center court after Williams’ 7-6 (5), 6-2 victory. Williams advanced to the final of the Australian Open where she’ll face Maria Sharapova.  (Andy Brownbill / Associated Press)

Tomas Berdych shakes hands with Rafael Nadal after defeating him in the Australian Open in Melbourne.  (Manan Vatsyayana / AFP/Getty Images)

Stan Wawrinka volleys a shot against Guillermo Garcia-Lopez during their fourth-round match in the Australian Open on Sunday.  (Joe Castro / EPA)

Serena Williams hits a forehard during her match against Garbine Muguruza in a fourth-round match at the Australian Open on Monday.  (William West / AFP / Getty Images)

Venus Williams returns a shot against Camila Giorgi during their third-round match at the Australian Open on Saturday in Melbourne.  (Quinn Rooney / Getty Images)

Rafael Nadal makes a backhand return to Kevin Anderson during their fourth-round match at the Australian Open on Sunday.  (Vincent Thian / Associated Press)

Maria Sharapova defeated Peng Shuai, 6-3, 6-0, on Sunday to advance to the Australian Open quarterfinals.  (Greg Wood / AFP / Getty Images)

Serena Williams returns a forehand against Elina Svitolina during their third-round match at the Australian Open on Saturday in Melbourne.  (Paul Crock / AFP / Getty Images)

Roger Federer of Switzerland was defeated by Andreas Seppi of Italy, 6-4, 7-6 (5), 4-6, 7-6 (5), on Friday in a third round men’s singles match at the Australian Open.  (Mal Fairclough / Getty Images)

Rafael Nadal drops to his knees and celebrates his second-round win over American Tim Smyczek at the Australian Open on Wednesday.  (William West / AFP/Getty Images)

Serena Williams reaches to hit a backhand during her win over Vera Zvonareva on Thursday at the Australian Open.  (Scott Barbour / Getty Images)

Rafael Nadal returns a shot during his victory over American qualifier Tim Smyczek in the second round of the Australian Open on Wednesday.  (Filip Singer / EPA)

Maria Sharapova of Russia plays a shot during her women’s singles match against Alexandra Panova of Russia at the Australian Open. Sharapova defeated Panova, 6-1, 4-6, 7-5.  (Paul Crock / Getty Images)

Stan Wawrinka of Switzerland serves to Marsel Ilhan of Turkey during their first round match at the Australian Open in Melbourne, Australia. Wawrinka defeated Ilhan, 6-1, 6-4, 6-2.  (Lee Jin-man / Associated Press)

Rafael Nadal returns a shot during his first-round win over Mikhail Youzhny at the Australian Open on Monday.  (Joe Castro / EPA)