Maximilian Marterer is a German professional tennis player. He has a career-high ATP singles ranking of world No. 45, achieved in August 2018.

The 2018 Australian Open was a tennis tournament played at Melbourne Park between 15 and 28 January 2018, and was the first Grand Slam tournament of the 2018 season. The tournament consisted of events for professional players in singles, doubles and mixed doubles play. Junior and wheelchair players compete in singles and doubles tournaments. Roger Federer was the defending champion in the men's singles event and successfully retained his title, his record twentieth Grand Slam major overall, defeating Marin Čilić in the final, while Caroline Wozniacki won the women's title, defeating Simona Halep in the final to win her first Grand Slam.