Most of Kyrgios' career so far has been blighted by controversial incidents that have resulted in numerous fines and a suspension for "tanking" a match at the Shanghai Masters last year.
The Australian has shown glimpses of his talent in recent years, most notably when defeating former world number one Rafael Nadal and Richard Gasquet en route to the Wimbledon quarter-finals in 2014.
But now, finally, the 21-year-old looks to be on the right track and his impressive showing at the Paribas Open have put him in the headlines for the right reasons.
The Canberra-born star overpowered three-time defending champion Djokovic to set up a last-eight clash against Federer, who clinched an 18th Grand Slam title in Australia back in January.
Kyrgios also became the first player in eight years to beat Djokovic in back-to-back hard-court tournaments, having ousted the Serbian in Acapulco recently.
Federer is expecting a stern challenge when he takes on the man from Down Under and the Swiss is not surprised at the results being posted by his opponent.
"I'm very impressed him taking out Novak, back-to-back weeks, on Novak's best surface," he said. "It goes a long way for all the players - not that he needed to prove his point - but I think now he has really arrived on the scene.
"He's beaten all the guys: Novak, myself, Rafa (Nadal). It's very impressive."