Nick Kyrgios
Kyrgios is one of the most talented players of his era but the Australian invites controversy like it’s going out of fashion. He regularly throws tantrums when things don’t go his way and he doesn’t care what people think about him. Some fans appreciate his authenticity but others consider him to be petulant and arrogant.

In 2016, he infamously walked off the court in Shanghai and argued with a fan. The seedy superstar received a three-month suspension from competition. The ITF also hit him with a significant fine for his troubles. He never learned his lesson despite the financial sting (via Daily Express).