Answer: Marin Cilic
More information: Roger Federer defeated Marin Cilic in the final match of the men's singles 2018 Australian Open tournament.
Answer: Caroline Wozniacki vs. Simona Halep
More information: Caroline Wozniacki and Simona Halep played in the final of the 2018 Australian Open Championship. Caroline Wozniacki defeated Simona Halep to win the title.
Answer: Naomi Osaka
More information: Naomi Osaka won her first-ever U.S. Open title in 2018 after winning the final game of the competition. She beat tennis, legend Serena Williams in the final.
More information: Rafael Nadal's 2017 French Open Championship title was his 15th Grand Slam title in his career.
More information: Novak Djokovic is a renowned tennis player. He was born on the 22nd of May 1987 in Belgrade, Serbia.
More information: Pete Sampras is an ex-professional tennis player. He hails from the USA. Sampras is also called "Pistol Pete".
Answer: World Champion Team
More information: The champions of the Davis Cup are referred to as the World Champion Team.
More information: France won the 2017 Davis Cup. They beat Belgium in final to lift the trophy.
Answer: Davis Cup
More information: The ITF runs the Davis Cup and it is a yearly event that is contested between men's teams from various nations under around the world. This tournament is often referred to as "World Cup of Tennis".