But, regardless of how you feel about him or what you think about him bowing out, nobody — not even Novak Djokovic — deserves to be booed for being injured. You don’t have to like him. You can absolutely root against him. You can boo him when he’s healthy.

Alexander Zverev chided the crowd after they booed Novak Djokovic for retiring due to injury after the first set in an Australian Open semifinal.

Djokovic, who retired due to injury after the first set, was booed by the crowd as he walked off Rod Laver Arena.