Alexander Zverev was bothered by an officiating call caused by a bird’s feather during his quarterfinal win over Tommy Paul at the Australian Open. Both players found it hard to let go of a previous,

Alexander Zverev was left bemused after the umpire stopped play in the middle of a rally when a bird's feather floated down on the court during his quarter-final against Tommy Paul at the Australian Open on Tuesday.

Watch Alexander Zverev argue with the umpire after he halts play mid-rally because of a feather on court during the German's Australian Open quarter-final victory over Tommy Paul.

Alexander Zverev said Tuesday he believes he can reach the Australian Open final for the first time and is primed for a "very intense and high-level" clash to get there -- with Novak Djokovic or Carlos Alcaraz standing in his way.