Jannik Sinner embraces the pressure of major finals and Alexander Zverev went down under the strain at Melbourne on Sunday.
Djokovic, who retired due to injury after the first set, was booed by the crowd as he walked off Rod Laver Arena.
An injured Novak Djokovic quit because of a torn muscle in his left leg after dropping the first set of his Australian Open ...
Alexander Zverev urges fans not to boo Novak Djokovic, who retired in the Australian Open Semifinals due to injury ...