John Isner celebrates his 13th tour-level title after triumphing at the Miami Open presented by Itau on Sunday against Alexander Zverev

Zverev takes his first loss in a Masters 1000 final at the Miami Open presented by Itau, having won his previous two in Rome and Montreal last season.

John Isner celebrates his first ATP World Tour Masters 1000 title after defeating Alexander Zverev to win the Miami Open presented by Itau.

John Isner celebrates his first ATP World Tour Masters 1000 title in Miami.

John Isner is the champion in Miami, claiming his first ATP World Tour Masters 1000 title.

The Bryans celebrate their first title of the season on Saturday at the Miami Open presented by Itau.

Mike Bryan, left, and Bob Bryan celebrate winning their fifth Miami Open presented by Itau doubles title on Saturday.

Bob Bryan, left, and Mike Bryan play in their second ATP World Tour Masters 1000 final of the month on Saturday in Miami (Indian Wells).

Andrey Rublev, left, and Karen Khachanov compete in their maiden ATP World Tour doubles final as a team on Saturday in Miami.

Alexander Zverev celebrates his win over Pablo Carreno Busta at the Miami Open presented by Itau.

Pablo Carreno Busta tears into a forehand during his semi-final match against Alexander Zverev at the Miami Open presented by Itau.

Alexander Zverev rips into a backhand during his semi-final match at the Miami Open presented by Itau.

Alexander Zverev will bring a perfect record in ATP World Tour Masters 1000 finals into Sunday's final at the Miami Open presented by Itau.

John Isner reaches his fourth ATP World Tour Masters 1000 final with his straight-sets win over Juan Martin del Potro in the semi-finals of the Miami Open presented by Itau.

Fans from across the country travel to the Miami Open presented by Itau to catch a glimpse of ATP World Tour superstars like Juan Martin del Potro.

Juan Martin del Potro falls just two wins short of completing the Sunshine Double of back-to-back titles in Indian Wells and Miami. The feat had been achieved in each of the three years prior.

Juan Martin del Potro's 15-match win streak comes to an end against John Isner in the semifinals of the Miami Open presented by Itau.

Karen Khachanov and Andrey Rublev celebrate after winning a critical point against Steve Johnson and Sam Querrey in their semi-final match at the Miami Open presented by Itau.

Juan Martin del Potro's 15-match losing streak comes to an end against John Isner in the Miami Open presented by Itau semi-finals.

John Isner advances to his fourth ATP World Tour Masters 1000 final on Friday in Miami.

Juan Martin del Potro will try to pull off the elusive "Sunshine Double" this week in Miami.

John Isner is looking to win his maiden ATP World Tour Masters 1000 title this week in Miami.

Alexander Zverev catches up with six-time NBA champion Scottie Pippen after advancing to the Miami Open presented by Itau semi-finals on Thursday.

Alexander Zverev celebrates an exceptional point against Borna Coric on Thursday at the Miami Open presented by Itau.

Borna Coric is projected to reach a new career-high in the ATP Rankings at No. 28 when the new rankings are released on Monday.

Alexander Zverev is going for his third ATP World Tour Masters 1000 title this week in Miami.

Mike Bryan, left, and Bob Bryan advance to the Miami Open presented by Itau doubles final on Thursday.

Pablo Carreno Busta celebrates reaching his second ATP World Tour Masters 1000 semi-final on Thursday in Miami.

Kevin Anderson will look to reach his first ATP World Tour Masters 1000 final this week in Miami.

Pablo Carreno Busta was 0-4 at the Miami Open presented by Itau before the 2018 edition.

Russians Karen Khachanov and Andrey Rublev reach their team's first tour-level final with victory over Americans Steve Johnson and Sam Querrey in the MIami semi-finals.

Juan Martin Del Potro takes his FedEx ATP Head2Head record to 3-2 against Canada's Milos Raonic in Miami.

John Isner celebrates following his straight sets victory over Hyeon Chung at the Miami Open presented by Itau.

Americans Sam Querrey and Steve Johnson knock out eighth seeds Juan Sebastian Cabal and Robert Farah in the Miami quarter-finals.

John Isner will try to reach his fourth Masters 1000 final this week in Miami.

Nick Kyrgios goes for an extravagant shot on Tuesday against Alexander Zverev in the Miami fourth round.

Nick Kyrgios and Alexander Zverev have faced off six times in their budding FedEx ATP Head2Head rivalry.

Alexander Zverev will face Borna Coric for a place in the Miami semi-finals.

Alexander Zverev breaks three times to beat Nick Kyrgios on Tuesday at the Miami Open presented by Itau.

Kevin Anderson will try to make his first ATP World Tour Masters 1000 semi-final this week in Miami.

Kevin Anderson reaches back-to-back quarter-finals at ATP World Tour Masters 1000 events on Tuesday at the Miami Open presented by Itau.

Borna Coric takes his FedEx ATP Head2Head series to 2-0 against Denis Shapovalov after a win in the fourth round.

Juan Martin del Potro sets a rematch of the BNP Paribas Open semi-finals against Milos Raonic in Miami.

Juan Martin del Potro wins his 14th consecutive match to move into the quarter-finals at the Miami Open presented by Itau.

John Isner defeats second seed Marin Cilic for his third win of the Miami Open presented by Itau after entering the event with two wins in 2018.

Mike Bryan (serving) and Bob Bryan drop just three games Monday in Miami.

Juan Martin Del Potro will bid to reach his first Miami Open presented by Itau quarter-final since 2009.

#NextGenATP Canadian Denis Shapovalov advances to the Round of 16 on his debut at the Miami Open presented by Itau.

Nick Kyrgios improves to a 10-2 record in Miami with a straight-sets win over Fabio Fognini in the third round.

Fernando Verdasco strikes 12 aces and wins 80 per cent of his first service points in a win over Thanasi Kokkinakis on Monday in Miami.

Pablo Carreno Busta loses eight of his first-service points to overcome Steve Johnson in Miami on Monday.

Boston Celtics star Gordan Hayward and Australian Nick Kyrgios spend time with players from the Stoneman Douglas High School tennis teams on Sunday at Crandon Park.

Jeremy Chardy drops just five points on serve in the second set of his straight-sets win over Grigor Dimitrov at the Miami Open presented by Itau.

Juan Martin del Potro extends his win streak to 13 straight with a routine victory over Kei Nishikori in Miami.

Hyeon Chung blasts into the fourth round in Miami.

A focused Damir Dzumhur lines up a forehand during his match against Denis Shapovalov at the Miami Open presented by Itau.

Alexander Zverev signs autographs while interacting with the Marjory Stoneman Douglas High School tennis team in Miami.

John Isner poses with members of the Marjory Stoneman Douglas High School girls tennis team.

Sam Querrey, Karen Khachanov, tournament director James Blake and Alexander Zverev stand alongside the Marjory Stoneman Douglas High School boys and girls tennis team during a ceremony at the Miami Open presented by Itau.

Roger Federer has his share of support during his match against Thanasi Kokkinakis at the Miami Open presented to Itau.

Tournament Director James Blake chats with Marjory Stoneman High School student Angelique Meneses, who sang the National Anthem on Saturday evening.

Thanasi Kokkinakis rips into a backhand during his second-round match against Roger Federer at the Miami Open presented to Itau.

Miami Open presented by Itau Tournament Director James Blake, centre, and ATP World Tour players, from left to right, Sam Querrey, Karen Khachanov and Sam Querrey show their support for Marjory Stoneman Douglas High School.

Nick Kyrgios said meeting with students from Marjory Stoneman Douglas High School before his match on Saturday evening inspired him.

Roger Federer takes a moment to collect himself during his second-round match against Thanasi Kokkinakis at the Miami Open presented by Itau.

Nick Kyrgios dropped just five points on serve in his second-round win over Dusan Lajovic at the Miami Open presented by Itau.

Jamie Murray and Bruno Soares reach the second round in Miami with a 6-3, 6-4 win over Ryan Harrison and Max Mirnyi.

Roger Federer will hand the No. 1 ATP Ranking back to Rafael Nadal on April 2.

Thanasi Kokkinakis celebrates his first match win over a World No. 1, rallying past Roger Federer in Miami.

Thanasi Kokkinakis claims the biggest win of his young career, stunning Roger Federer in Miami.

With his win over Kyle Edmund, #NextGen ATP Frances Tiafoe extends his win streak in Florida to seven.

Alexander Zverev moves into the third round in Miami, prevailing over Daniil Medvedev.

Alexander Zverev edges past Daniil Medvedev to reach the third round in Miami.

Aussie Thanasi Kokkinakis is feeling healthy again at the Miami Open presented by Itau.

Yoshihito Nishioka, whose ATP Ranking has dropped to No. 374, returned to Miami with a win this week against Aussie Alex de Minaur.

Juan Martin del Potro unleashes a searing backhand winner during his match against Robin Haase in the second round at the Miami Open presented by Itau.

Novak Djokovic has won six titles at the Miami Open presented by Itau, but falls short of a seventh after losing to Frenchman Benoit Paire Friday.

Benoit Paire ousts six-time champion Novak Djokovic in the second round of the Miami Open.

Novak Djokovic sees his 16-match Miami winning streak come to an end with a loss to Benoit Paire in the second round.

Second seed Marin Cilic opens his Miami campaign with a straight-sets win over Pierre-Hugues Herbert.

Joao Sousa celebrates recording the fourth Top 10 victory of his career on Friday in Miami.

Novak Djokovic and Viktor Troicki come up short against Nikola Mektic and Alexander Peya in first-round doubles action in Miami.

#NextGenATP American Frances Tiafoe defeats Argentine Nicolas Kicker to advance to the second round in Miami for the second consecutive year.

Nicola Kuhn makes his own bit of history by advancing to the second round at the Miami Open presented by Itau.

Defending champion Roger Federer will contest his 17th Miami Open.

Donald Young rips into a forehand during his opening round match against Leonardo Mayer in Miami.

Denis Shapovalov needs six match points to beat Viktor Troicki on Thursday in his Miami debut.

Jared Donaldson looks to return to the fourth round of the Miami Open presented by Itau this fortnight.

Denis Shapovalov will look to level his FedEx ATP Head2Head series with Viktor Troicki in Miami.

Juan Martin Del Potro arrives in Miami riding an 11-match winning streak after titles in Acapulco and Indian Wells.

20-year-old Frances Tiafoe takes part in Kids Day activities at the Miami Open on Tuesday.

Marin Cilic takes in the sights and sounds of the Frost Museum at Florida International University ahead of his Miami Open presented by Itau opener.

Joao Sousa celebrates beating Ryan Harrison in two tie-break sets on Thursday in the Miami first round.

Hyeon Chung takes part in activities during Kids Day at the Miami Open Presented By Itau on Tuesday.

Jack Sock hopes his Indian Wells doubles title with John Isner sparks a return to form in singles in Miami.

Novak Djokovic is going for his seventh Miami Open presented by Itau title this fortnight.

Grigor Dimitrov will face either Marton Fucsovics of Hungary or German Maxilmilian Marterer in the second round of the Miami Open presented by Itau.

Novak Djokovic, the six-time Miami Open presented by Itau champion, reads 'Pete the Cat' to a group of children at the Miami Children's Museum on Monday.

Novak Djokovic visits the Miami Children's Museum Monday before he attempts to win a seventh title at the Miami Open presented by Itau.

Tournament Director James Blake and No. 7 seed David Goffin, who will open against Ryan Harrison or Joao Sousa, assist at the Miami Open presented by Itau draw ceremony.

Referee Mark Darby looks on as seventh-seed David Goffin randomly selects the Miami Open Presented By Itaú main draw.

Seventh-seed David Goffin and tournament director James Blake display the Miami Open Presented By Itaú main draw on Monday.

Juan Martin del Potro needs three sets to advance through his Miami opener.

Alex de Minaur, left, and Axel Geller, pose following their final at the Orange Bowl in 2013. Geller won the match, 6-4, 6-0.