Tournaments

MONTE-CARLO, MONACO - APRIL 19: Novak Djokovic of Serbia in action against Dominic Thiem of Austria during his men's singles match on day five of the Rolex Monte-Carlo Masters at Monte-Carlo Sporting Club on April 19, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Novak Djokovic Splashes Out Of 2018 Barcelona Open

Grigor Dimitrov Poised For 2018 Barcelona Open Run

Simona Halep Takes Opener At Porsche Tennis Grand Prix

Dominic Thiem Survives Meeting With Jaume Munar

BARCELONA, SPAIN - APRIL 25: Rafael Nadal of Spain plays a forehand against Roberto Carballes Baena of Spain in their game during day three of the Barcelona Open Banc Sabadell on April 25, 2018 in Barcelona, Spain. (Photo by Alex Caparros/Getty Images)

Rafael Nadal, Ten-Time Champ, Opens Barcelona On Top

KEY BISCAYNE, FL - MARCH 27: Angelique Kerber of Germany plays a forehand against Sloane Stephens of the United States in their fourth round match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 27, 2018 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)

WTA Tour Porche Race to Singapore Rankings Remain Unchanged

MONTE-CARLO, MONACO - APRIL 21: Alexander Zverev of Germany in action against Kei Nishikori of Japan during day seven of the ATP Masters Series Monte Carlo Rolex Masters at Monte-Carlo Sporting Club on April 21, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Alexander Zverev Moves In Rankings To Revisit Career High

MONTE-CARLO, MONACO - APRIL 19: Novak Djokovic of Serbia reacts during his men's singles match against Dominic Thiem of Austria on day five of the Rolex Monte-Carlo Masters at Monte-Carlo Sporting Club on April 19, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Novak Djokovic: Returning Slower Than Rafael Nadal

INDIAN WELLS, CA - MARCH 13: Jack Sock celebrates while playing Feliciano Lopez of Spain during the BNP Paribas Open at the Indian Wells Tennis Garden on March 13, 2018 in Indian Wells, California. (Photo by Matthew Stockman/Getty Images)

Jack Sock Must Break Slump In ATP Tour Middle Months

MONACO, MONACO - APRIL 18: Tennis superstar Caroline Wozniacki serves up a partnership with fitness app Lympo, which provides rewards for physical activity, at Le Meridien Beach Plaza Hotel on April 18, 2018 in Monaco, Monaco. (Photo by Patrick Aventurier/Getty Images for Lympo)

Istanbul Cup: Top Seed Caroline Wozniacki Wins Opener

KEY BISCAYNE, FL - MARCH 24: Simona Halep of Romania returns a shot to Agnieszka Radwanska of Poland during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 24, 2018 in Key Biscayne, Florida. (Photo by Matthew Stockman/Getty Images)

Simona Halep, Caroline Wozniacki, or someone else at No. 1 in 2018?

MONTE-CARLO, MONACO - APRIL 22: Kei Nishikori of Japan plays a backhand in his match against Rafael Nadal of Spain during day eight of ATP Masters Series: Monte Carlo Rolex Masters at Monte-Carlo Sporting Club on April 22, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Kei Nishikori: Strong Showing For Tennis Superstar

MONTE-CARLO, MONACO - APRIL 19: Novak Djokovic of Serbia serves against Dominic Thiem of Austria during his men's singles 3rd round match on day five of the Rolex Monte-Carlo Masters at Monte-Carlo Sporting Club on April 19, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Is Djokovic being prudent by playing Barcelona?

MONTE-CARLO, MONACO - APRIL 21: Kei Nishikori of Japan takes a break between points during his men's Semi-Final match against Alexander Zverev Jr. of Germany during day seven of ATP Masters Series: Monte Carlo Rolex Masters at Monte-Carlo Sporting Club on April 21, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Kei Nishikori Reaches Finals, Faces Rafael Nadal Next

SEVILLE, SPAIN - DECEMBER 04: Rafael Nadal of Spain plays a backhand to Juan Martin del Potro of Argentina during the third and last day of the final Davis Cup match between Spain and Argentina on December 4, 2011 in Seville, Spain. (Photo by Jasper Juinen/Getty Images)

French Open favorites can shift after Monte-Carlo Masters

MONTE-CARLO, MONACO - APRIL 19: Kei Nishikori of Japan in action during his men's singles match against Andreas Seppi of Italy on day five of the ATP Masters Series Monte Carlo Rolex Masters at Monte-Carlo Sporting Club on April 19, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Kei Nishikori, Marin Cilic Match Can Go Either Way

MONTE-CARLO, MONACO - APRIL 19: Dominic Thiem of Austria serves against Novak Djokovic of Serbia during day five of the Rolex Monte-Carlo Masters at Monte-Carlo Sporting Club on April 19, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Dominic Thiem advances, ousts two-time champion Novak Djokovic

MONTE-CARLO, MONACO - APRIL 18: Rafael Nadal of Spain serving during his Mens Singles match against Aljaz Bedene of Slovenia at Monte-Carlo Sporting Club on April 18, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Rafael Nadal, King of Clay, back at Monte-Carlo Masters

MONTE-CARLO, MONACO - APRIL 17: Dominic Thiem of Austria hits a backhand return during his Mens Singles match against Andrey Rublev of Russia at Monte-Carlo Sporting Club on April 17, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Dominic Thiem, other top seeds win early at Monte-Carlo

RIO DE JANEIRO, BRAZIL - FEBRUARY 22: Aljaz Bedene of Slovenia returns a shot to Pablo Carreno Busta of Spain during the ATP Rio Open 2018 at Jockey Club Brasileiro on February 22, 2018 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

Aljaz Bedene: rematch versus Rafael Nadal at 2018 Monte-Carlo Masters

KEY BISCAYNE, FL - MARCH 25: Grigor Dimitrov of Bulgaria plays a forehand against Jeremy Chardy of France in their third round match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 25, 2018 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)

Grigor Dimitrov: chances at 2018 Monte-Carlo Masters

MONTE-CARLO, MONACO - APRIL 16: Novak Djokovic of Serbia celebrates after his singles match against Dusan Lajovic of Serbia during day two of ATP Masters Series: Monte Carlo Rolex Masters at Monte-Carlo Sporting Club on April 16, 2018 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)

Novak Djokovic cruises through Monte-Carlo opener

MELBOURNE, AUSTRALIA - JANUARY 16: Steve Johnson of the United States serves in his first round match against Denis Kudla of the United States on day two of the 2018 Australian Open at Melbourne Park on January 16, 2018 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

Steve Johnson: defending champion’s chances in Houston

KEY BISCAYNE, FL - MARCH 27: Nick Kyrgios of Australia plays a backhand against Alexander Zverev of Germany in their fourth round match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 27, 2018 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)

Nick Kyrgios battles back, takes opener in Houston

INDIAN WELLS, CA - MARCH 13: Jack Sock celebrates while playing Feliciano Lopez of Spain during the BNP Paribas Open at the Indian Wells Tennis Garden on March 13, 2018 in Indian Wells, California. (Photo by Matthew Stockman/Getty Images)

Jack Sock needs a strong performance in Houston

KEY BISCAYNE, FL - APRIL 01: John Isner serves to Alexander Zverev of German during the men's final of the Miami Open Presented by Itau at Crandon Park Tennis Center on April 1, 2018 in Key Biscayne, Florida. (Photo by Matthew Stockman/Getty Images)

Can John Isner continue his newfound success in Houston?

RIO DE JANEIRO, BRAZIL - FEBRUARY 19: Marin Cilic of Croatia returns a shot to Carlos Berlocq of Argentina during the ATP Rio Open 2018 at Jockey Club Brasileiro on February 19, 2018 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)

Marin Cilic: breaking down his chances at the 2018 French Open

KEY BISCAYNE, FL - MARCH 25: Kiki Bertens of the Netherlands plays a shot against Venus Williams during Day 7 of the Miami Open at the Crandon Park Tennis Center on March 25, 2018 in Key Biscayne, Florida. (Photo by Al Bello/Getty Images)

Kiki Bertens emerges victorious from challenging Charleston Open