Rafael Nadal's backhand played a key role in the Spaniard winning his 30th ATP World Tour Masters 1000 title on Sunday.

Rafael Nadal celebrates winning his fifth Mutua Madrid Open title.

Rafael Nadal fights off Dominic Thiem on Sunday in one of the matches of the season so far.

Rafael Nadal celebrates his 71st tour-level title on Sunday in Madrid.

Rafael Nadal improves to 15-0 on the clay this season.

Rafael Nadal celebrates his fifth Mutua Madrid Open title.

Dominic Thiem has plenty of positives to take from Madrid with a runner-up finish.

Dominic Thiem loses to Rafael Nadal in a final for the second time this clay-court season.

Dominic Thiem gave Rafael Nadal all he could handle in the Madrid final.

Rafael Nadal picks up his 30th ATP World Tour Masters 1000 title, tying Novak Djokovic for the record.

Rafael Nadal remains unbeaten on clay in 2017 after winning his fifth title in Madrid.

Rafael Nadal wins his 30th ATP World Tour Masters 1000 title on Sunday.

Marcelo Melo and Lukasz Kubot lift their second ATP World Tour Masters 1000 trophy in Madrid.

Marcelo Melo and Lukasz Kubot celebrate their second ATP World Tour Masters 1000 title of the year in Madrid.

Pablo Cuevas continues to excel on clay in singles and doubles this season.

Pablo Cuevas leaves Madrid with his first ATP World Tour Masters 1000 semi-final.

Dominic Thiem will look to gain revenge from his loss to Rafael Nadal in the Barcelona final.

Dominic Thiem reaches his first ATP World Tour Masters 1000 final in Madrid.

Rafael Nadal and Novak Djokovic battled for the 50th time in their FedEx ATP Head2Head series on Saturday in Madrid.

Cristiano Ronaldo of Real Madrid watches Rafael Nadal and Novak Djokovic battle at the Mutua Madrid Open on Saturday.

Rafael Nadal beats Novak Djokovic at the Mutua Madrid Open during their 50th FedEx ATP Head2Head meeting.

Novak Djokovic endures his first straight-sets loss to Rafael Nadal in five years.

Novak Djokovic couldn't find answers against Rafael Nadal in their Madrid semi-final.

Rafael Nadal is one match away from a fifth title in Madrid.

Rafael Nadal battles Novak Djokovic for the 50th time in their FedEx ATP Head2Head series on Saturday in Madrid.

Rafael Nadal looks to end Novak Djokovic's seven-match win streak against him.

Rafael Nadal snaps his losing streak against Novak Djokovic with a semi-final win in Madrid.

Rafael Nadal leads Novak Djokovic in their 50th meeting at the Mutua Madrid Open.

Edouard Roger-Vasselin (L) and Nicolas Mahut march into the doubles final.

Dominic Thiem continues his outstanding clay-court season in Madrid.

Nick Kyrgios and Jack Sock continue their popular run in Madrid by reaching the doubles semi-finals.

Feliciano Lopez (L) and Marc Lopez upset top seeds Henri Kontinen and John Peers to reach the semi-finals.

David Goffin gave Rafael Nadal all he could handle in their quarter-final match.

Edouard Roger-Vasselin and Nicolas Mahut scrape into the Madrid semi-finals with a Match tie-break win over Jamie Murray and Bruno Soares on Friday.

Rafael Nadal is two matches away from a fifth title in Madrid.

Pablo Cuevas breaks through to his first ATP World Tour Masters 1000 semi-final with victory over Alexander Zverev on Friday.

Fourth seeds Lukasz Kubot and Marcelo Melo beat seventh seeds Ivan Dodig and Marcel Granollers in Madrid on Friday.

Novak Djokovic advanced to the Madrid semi-finals without hitting a ball on Friday when Kei Nishikori withdrew due to injury.

Kei Nishikori withdrew on Friday ahead of his Madrid quarter-final against Novak Djokovic due to right wrist pain.

Feliciano Lopez and Marc Lopez advance to the quarter-finals in Madrid.

Andy Murray struggled to find answers against Borna Coric in Madrid.

The atmosphere is electric as Rafael Nadal defeats Nick Kyrgios to reach the quarter-finals in Madrid.

Dominic Thiem reaches the Madrid quarter-finals after saving five match points in a win against Grigor Dimitrov.

The Bryan brothers meet with their fans on Thursday at the Mutua Madrid Open.

Defending champion Novak Djokovic meets up with Tournament Director Manolo Santana after his win over Feliciano Lopez on Thursday.

Nick Kyrgios looks to win his first ATP World Tour Masters 1000 title in Madrid.

Rafael Nadal moves closer to a fifth title in Madrid.

A packed Estadio 3 watches as Alexander Zverev ousts No. 11 seed Tomas Berdych on Thursday in Madrid.

#NextGenATP German Alexander Zverev continues his run of fine form by beating Tomas Berdych, the 2012 runner-up, on Thursday in Madrid.

Borna Coric has produced inspired tennis this week in Madrid.