Alexander Zverev is chasing his fourth ATP Masters 1000 title.

Casper Ruud has not dropped a set en route to the Mutua Madrid Open semi-finals.

Rafael Nadal is making his 18th appearance at the Mutua Madrid Open.

Dominic Thiem celebrates beating John Isner on Friday at the Mutua Madrid Open.

Alexander Zverev is chasing his second Mutua Madrid Open title.

Third seed Dominic Thiem beats John Isner for a place in the Madrid semi-finals.

Third seed Dominic Thiem beat John Isner on Friday for a place in the Madrid semi-finals.

Matteo Berrettini beats Federico Delbonis in straight sets to reach the Madrid quarter-finals.

John Isner is a three-time Mutua Madrid Open quarter-finalist.

Casper Ruud beats a top five opponent for the first time, upsetting Stefanos Tsitsipas in Madrid.

Ivan Dodig and Filip Polasek are chasing their second ATP Masters 1000 team title.

Dominic Thiem is making his sixth appearance at the Mutua Madrid Open.

Alexander Bublik is making his Mutua Madrid Open debut this week.

Dominic Thiem is chasing his second ATP Masters 1000 title.

Alexander Bublik reaches his second ATP Masters 1000 quarter-final on Thursday at the Mutua Madrid Open.

John Isner (right) saves one match point against Roberto Bautista Agut (left) on Wednesday in Madrid.

Alexei Popyrin will play Rafael Nadal for the first time in the third round in Madrid.

Alexei Popyrin defeats jannik Sinner to advance to the Round of 16 at an ATP Masters 1000 event for the first time.

Fifth seed Alexander Zverev celebrates beating Kei Nishikori on Wednesday in Madrid.

Second seed Daniil Medvedev fights hard to beat Alejandro Davidovich Fokina on Wednesday in Madrid.

Aslan Karatsev (top) reacts to a Diego Schwartzman backhand during their match on Wednesday in Madrid.

Matteo Berrettini defeats Fabio Fognini in straight sets to level their ATP Head2Head series at 1-1.

Dominic Thiem defeats Marcos Giron on Tuesday evening in Madrid without facing a break point.

Alexander Bublik takes a 2-0 lead in his ATP Head2Head series with Denis Shapovalov on Tuesday in Madrid.

Jannik Sinner was in control against Guido Pella on Tuesday in Madrid.

Kei Nishikori, the 2014 finalist, beats Karen Khachanov on Tuesday in Madrid.

Kei Nishikori, the 2014 finalist, beats Karen Khachanov on Tuesday in Madrid.

Casper Ruud beat Felix Auger-Aliassime on Tuesday for a place in the Madrid second round.

Daniil Medvedev will face Pierre-Hugues Herbert or Alejandro Davidovich Fokina in the Mutua Madrid Open second round.

Carlos Alcaraz broke Adrian Mannarino's serve on four occasions to reach the Mutua Madrid Open second round.

Lloyd Harris celebrates beating No. 13 seed Grigor Dimitrov on Monday in Madrid.

John Isner hits 28 aces to beat Miomir Kecmanovic on Monday in Madrid.

Marcelo Melo and Jean-Julien Rojer saved all seven break points they faced to beat Jamie Murray and Bruno Soares at the Mutua Madrid Open.

Aslan Karatsev owns an 18-5 record in 2021.

Alex de Minaur breaks Jaume Munar's serve four times on Sunday to reach the second round in Madrid.

Denis Shapovalov defeats Dusan Lajovic to set a clash against Alexander Bublik in Madrid.

Denis Shapovalov wins 90 per cent of his first-serve points to beat Dusan Lajovic on Sunday in Madrid.

Rafael Nadal is chasing his first Mutua Madrid Open title since 2017.

Arthur Cazaux will play Alexei Popyrin for a spot in the Madrid main draw.

Felix Auger-Aliassime will meet Casper Ruud in the Mutua Madrid Open first round.

Jannik Sinner will make his Mutua Madrid Open debut this year.

Lorenzo Musetti defeats Radu Albot in the first qualifying round at the Mutua Madrid Open.

Andrey Rublev makes his Madrid debut.

Carlos Alcaraz, 17, wins his first ATP Masters 1000 match at the Mutua Madrid Open to set up a second-round clash against Rafael Nadal.

Aslan Karatsev is playing just his third tour-level clay-court tournament.

Carlos Alcaraz sets up a second-round showdown with Rafael Nadal.

Lloyd Harris improves to 4-0 against Top 20 opponents in 2021.

Stefanos Tsitsipas leads the FedEx ATP Race To Turin.

Alexander Zverev is chasing his second title in Madrid.

Dominic Thiem is playing his first event of the European clay-court season.

Cristian Garin upsets second seed Daniil Medvedev Thursday in Madrid.

Rafael Nadal is chasing his sixth title in Madrid.

Alexander Zverev is chasing his second Mutua Madrid Open title.

Matteo Berrettini extends his winning streak to seven matches.