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ROTTERDAM, NETHERLANDS - FEBRUARY 16: Kei Nishikori of Japan reacts to a point against Stan Wawrinka of Switzerland in their semi final match during Day 6 of the ABN AMRO World Tennis Tournament at Rotterdam Ahoy on February 16, 2019 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Dubai Tennis Updates: Kei Nishikori OUSTED in Men’s Singles

Acapulco Predictions: Rafael Nadal versus Nick Kyrgios

Rafael Nadal strikes back in first match since Australian Open

Hopeful Stan Wawrinka needs combination of luck and skill in Acapulco

ROTTERDAM, NETHERLANDS - FEBRUARY 16: Kei Nishikori of Japan returns a backhand to Stan Wawrinka of Switzerland in their semi final match during Day 6 of the ABN AMRO World Tennis Tournament at Rotterdam Ahoy on February 16, 2019 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Kei Nishikori: Dubai top seed cruises through opener

MELBOURNE, AUSTRALIA - JANUARY 20: Roger Federer of Switzerland celebrates winning the first set in his fourth round match against Stefanos Tsitsipas of Greece during day seven of the 2019 Australian Open at Melbourne Park on January 20, 2019 in Melbourne, Australia. (Photo by Jack Thomas/Getty Images)

Roger Federer: rocky but winning start at Dubai Tennis Championships

RIO DE JANEIRO, BRAZIL - FEBRUARY 24: Laslo Djere of Serbia celebrates the championship after defeating Felix Auger-Aliassime of Canada at the singles final of the ATP Rio Open 2019 at Jockey Club Brasileiro on February 24, 2019 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

Rio Open final brings two of the sport’s rising stars into the spotlight

MELBOURNE, AUSTRALIA - JANUARY 14: John Isner of the United States plays a backhand in his first round match against Reilly Opelka of the United States during day one of the 2019 Australian Open at Melbourne Park on January 14, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

Delray Beach Open Semifinals Analysis and Breakdown

MELBOURNE, AUSTRALIA - JANUARY 15: Nick Kyrgios of Australia plays a backhand in his first round match against Milos Raonic of Canada during day two of the 2019 Australian Open at Melbourne Park on January 15, 2019 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

Nick Kyrgios upset in Delray Beach, what comes next?

MELBOURNE, AUSTRALIA - JANUARY 19: David Goffin of Belgium plays a forehand in his third round match against Daniil Medvedev of Russia during day six of the 2019 Australian Open at Melbourne Park on January 19, 2019 in Melbourne, Australia. (Photo by Darrian Traynor/Getty Images)

Open 13 updates and analysis: David Goffin earns much needed win

RIO DE JANEIRO, BRAZIL - FEBRUARY 19: Dominic Thiem of Austria returns a shot to Laslo Djere of Serbia during the ATP Rio Open 2019 at Jockey Club Brasileiro on February 19, 2019 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

Dominic Thiem troubles at Rio Open reveal concerns for 2019 ATP Tour

ROTTERDAM, NETHERLANDS - FEBRUARY 17: Gael Monfils of France celebrates a point against Stan Wawrinka of Switzerland in their Mens Final during Day 7 of the ABN AMRO World Tennis Tournament at Rotterdam Ahoy on February 17, 2019 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Rotterdam Open Highlights: WATCH Gael Monfils and Stan Wawrinka

ROTTERDAM, NETHERLANDS - FEBRUARY 17: Stan Wawrinka of Switzerland celebrates a point against Gael Monfils of France in their Mens Final during Day 7 of the ABN AMRO World Tennis Tournament at Rotterdam Ahoy on February 17, 2019 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Is Stan Wawrinka capable of cracking the ATP Top 10 again?

MELBOURNE, AUSTRALIA - JANUARY 14: Reilly Opelka of the United States plays a backhand in his first round match against John Isner of the United States during day one of the 2019 Australian Open at Melbourne Park on January 14, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

Reilly Opelka touches career heights with first ATP title

ROTTERDAM, NETHERLANDS - FEBRUARY 15: Gael Monfils of France returns a backhand to Damir Dzumhur of Bosnia and Herzegovina in their quarter final during Day 5 of the ABN AMRO World Tennis Tournament at Rotterdam Ahoy on February 15, 2019 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Gael Monfils: 2019 ATP Tour success improves title chances

MELBOURNE, AUSTRALIA - JANUARY 22: Frances Tiafoe of the United States plays a backhand in his quarter final match against Rafael Nadal of Spain during day nine of the 2019 Australian Open at Melbourne Park on January 22, 2019 in Melbourne, Australia. (Photo by Cameron Spencer/Getty Images)

Is Frances Tiafoe New York Open stumble a concern?

NEW YORK, NY - AUGUST 29: Frances Tiafoe of the United States reacts during his first round Men's Singles match against John Isner of the United States on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)

New York Open: John Isner, Frances Tiafoe, or the field?

ADELAIDE, AUSTRALIA - JANUARY 31: Damir Dzumhur during practice after the Official Draw ahead of the Davis Cup Qualifier tie between Australia and Bosnia & Herzegovina at Memorial Drive on January 31, 2019 in Adelaide, Australia. (Photo by Mark Brake/Getty Images)

Rotterdam Open Stunner: Damir Dzumhur defeats Stefanos Tsitsipas

MELBOURNE, AUSTRALIA - JANUARY 17: Jo-Wilfried Tsonga of France plays a backhand during his second round match against Novak Djokovic of Serbia during day four of the 2019 Australian Open at Melbourne Park on January 17, 2019 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

Jo-Wilfried Tsonga returns to top form following Open Sud de France

MELBOURNE, AUSTRALIA - JANUARY 14: Gael Monfils of France celebrates a point in his first round match against Damir Dzumhur of Bosnia and Herzegovina during day one of the 2019 Australian Open at Melbourne Park on January 14, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

Gael Monfils: breaking down his title chances on the 2019 ATP Tour

MELBOURNE, AUSTRALIA - JANUARY 14: Kyle Edmund of Great Britain serves in his first round match against Tomas Berdych of Czech Republic during day one of the 2019 Australian Open at Melbourne Park on January 14, 2019 in Melbourne, Australia. (Photo by Cameron Spencer/Getty Images)

Will injuries hurt Kyle Edmund on the 2019 ATP Tour?

LONDON, ENGLAND - JUNE 19: Tomas Berdych of The Czech Republic plays a backhand during his match against Julien Benneteau of France on Day Two of the Fever-Tree Championships at Queens Club on June 19, 2018 in London, United Kingdom. (Photo by Steve Bardens/Getty Images)

Tomas Berdych takes on Roberto Bautista Agut in Doha

ABU DHABI, UNITED ARAB EMIRATES - DECEMBER 29: Novak Djokovic of Serbia looks on during the men's final match of the Mubadala World Tennis Championship at International Tennis Centre Zayed Sports City on December 29, 2018 in Abu Dhabi, United Arab Emirates. (Photo by Francois Nel/Getty Images)

Roberto Bautista Agut outlasts Novak Djokovic at Qatar Open

BRISBANE, AUSTRALIA - JANUARY 03: Grigor Dimitrov of Bulgaria plays a backhand in his match against Kei Nishikori of Japan during day five of the 2019 Brisbane International at Pat Rafter Arena on January 03, 2019 in Brisbane, Australia. (Photo by Chris Hyde/Getty Images)

Will Grigor Dimitrov slump continue into 2019 ATP Tour?

ABU DHABI, UNITED ARAB EMIRATES - DECEMBER 28: Rafael Nadal of Spain in action against Kevin Anderson of South Africa during his men's singles match on day two of the Mubadala World Tennis Championship at International Tennis Centre Zayed Sports City on December 28, 2018 in Abu Dhabi, United Arab Emirates. (Photo by Francois Nel/Getty Images)

Rafael Nadal knows what he needs on the 2019 ATP Tour

NEW YORK, NY - SEPTEMBER 07: Rafael Nadal of Spain reacts during his men's singles semi-final match against Juan Martin del Potro of Argentina on Day Twelve of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 7, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)

Rafael Nadal must recover and prove himself after Mubadala loss

SHANGHAI, CHINA - OCTOBER 14: Novak Djokovic of Serbia poses with his trophy after defeating Borna Coric of Croatia in the final of men's singles match of the 2018 Rolex Shanghai Masters at Qi Zhong Tennis Centre on October 14, 2018 in Shanghai, China. (Photo by Kevin Lee/Getty Images)

Novak Djokovic Remains Clearcut Favorite on 2019 ATP Tour

PERTH, AUSTRALIA - DECEMBER 30: Belinda Bencic and Roger Federer of Switzerland laugh in the mixed doubles match against Katie Boulter and Cameron Norrie of Great Britain during day two of the 2019 Hopman Cup at RAC Arena on December 30, 2018 in Perth, Australia. (Photo by Will Russell/Getty Images)

Roger Federer’s Hopman Cup performance sign of what to expect