Most Controversial Tennis Moments Involving Modern Era Stars

During the 2016 ATP Finals, Ivo Karlovic fired a 103-mph serve that Kevin Anderson could not return. Anderson lodged a challenge, claiming the ball bounced twice before he hit it, but the electronic line-calling system confirmed the serve was good, ending a tense rally.

In the semi-final against Rafael Nadal, Djokovic accidentally struck a ball girl in the throat with a return shot. The ball deflected into the court, and despite a controversial umpiring decision that let him continue, he ultimately lost the match, sparking massive debate over rule enforcement.

Sharapova tested positive for meldonium shortly after the drug was banned. Although she claimed ignorance due to long-term prescription use, the ITF tribunal reduced her ban, but the incident damaged her reputation and led to the loss of major sponsors like TAG Heuer and BMW.

Nadal withdrew from the French Open final against Dominic Thiem due to a wrist injury, citing that playing the next day would have been unfair. Thiem won the title, but Nadal's decision sparked a fierce debate about sportsmanship versus competitive integrity.

Sinner lost the first set of his final against Medvedev after accidentally hitting a ball into the court from his pocket. The incident reignited calls for stricter enforcement of electronic line-calling and immediate point penalties for accidental ball releases during play.

While not a single incident, Murray's breakthrough win over Djokovic in the 2015 final broke a six-year losing streak. The match was controversial in the sense that it ended the era of absolute dominance, with Djokovic later claiming Murray played 'untenable' tactics.

Wozniacki refused to shake hands with her opponent after a loss, citing physical illness and emotional distress. The incident led to a fine from the ITF and highlighted the growing pressure and physical toll on women players in the modern era.

Kyrgios withdrew from the second round against Denis Shapovalov due to cramping, a decision criticized by many as unsportsmanlike. The move allowed his compatriot to advance on a walkover, sparking debates about respect for the game and opponent.

Rybakina tested positive for a banned substance during Wimbledon but was cleared by the ITF due to no fault or negligence. The case drew significant media attention and highlighted the complexities of anti-doping regulations in high-pressure tournaments.

Halep was banned from competing in Romania while her USADA doping case was ongoing. Although she was eventually reinstated, the ban and subsequent positive test for clostebol created a media storm and questioned the integrity of her comeback tour.

Medvedev retracted his apology after arguing with the umpire in the final against Djokovic. His aggressive stance and refusal to fully accept responsibility for his behavior sparked a global conversation about respect for officials and conduct on court.

Following the US Open incident, Sinner and the ATP faced scrutiny over the interpretation of accidental ball hits. The controversy led to temporary rule adjustments and ongoing debates about how to handle unintentional infractions during critical points.

Nadal withdrew from the semi-final against David Ferrer due to a knee injury, citing that continuing would be unfair. The decision was praised for its sportsmanship but criticized for potentially affecting the tournament's final outcome and viewership.

Djokovic accidentally hit a ball girl in the ankle, causing her to leave the court. He received a warning but continued playing, which drew criticism for lack of immediate concern for the official's safety and well-being.

While not controversial in outcome, Swiatek's relentless aggression and physical style challenged traditional expectations of clay-court play. Some critics argued her style was unsustainable, but her success redefined modern clay-court tennis.

Gauff was seen arguing with her coach and appearing to have a moment of frustration during a match. The incident highlighted the mental health challenges faced by young players and the intense scrutiny they face in the digital age.

Tsitsipas withdrew from a match due to a foot injury, raising questions about injury management in modern tennis. The decision was seen as premature by some, but he later attributed it to the physical demands of the season.

Berrettini withdrew from the semi-final against Djokovic due to a back injury. His emotional farewell and the subsequent debate over whether he pushed too hard sparked discussions about player welfare and tournament scheduling.

Rublev smashed his racket and argued with the umpire after losing a crucial point. The incident led to a fine and highlighted the emotional volatility of players under pressure in high-stakes matches.

Pegula was involved in a heated exchange with the umpire over line calls. The incident sparked discussions about the role of technology in tennis and the importance of respecting official decisions, even when they go against a player.