Pick from a shortlist of six for this year's BBC World Sport Star of the Year award.
Serbia's Hamad Medjedovic becomes the sixth winner of the Next Gen ATP Finals with victory in Saudi Arabia.
Former world number one Rafael Nadal will return to tennis at the Brisbane International after nearly a year out with injury.
After taking its first steps into staging professional tennis, Saudi Arabia is now eyeing a deal for the WTA finals.
Nick Kyrgios says he is "very thankful" to Andy Murray for helping him with his mental health struggles.
Jannik Sinner beats Alex de Minaur in straight sets to secure Italy's first Davis Cup title for 47 years.