Novak Djokovic and Carlos Alcaraz are a win away each from setting up a blockbuster Australian Open quarter-final at Melbourne Park.

Novak Djokovic said he “loved” Danielle Collins’ reaction to a hostile home crowd at the Australian Open, adding that he was now a “big fan” of the American. After beating home favourite Destanee Aiava on a raucous Kia Arena,

Novak Djokovic v Tomas Machac score before Jack Draper v Aleksandar Vukic - Jacob Fearnley is out after a straight-sets defeat to Alexander Zverev before Jack Draper takes on Australian favourite Alek

Aleksandar Vukic is through to the third round of the Australian Open after coming from behind to defeat American Sebastian Korda in five sets.

Jakub Mensik hits arguably the best shot of the tournament, Thanasi Kokkinakis proves sportsmanship is alive and Alexander Zverev is not interested in a barber. Here's the five quick hits from day four of the Australian Open.

Kyrgios and Kokkinakis, the men's doubles champions at Melbourne Park in 2022, retired while down 7-5, 3-2 against another Australian team, James Duckworth and Aleksandar Vukic. Both Kyrgios (strained abdominal muscle) and Kokkinakis (right shoulder trouble) came into the match dealing with physical issues after losses in singles.

Draper takes on Australian favourite Aleksandar Vukic while Djokovic leads Tomas Machac despite taking a medical timeout

Both Kyrgios (strained abdominal muscle) and Kokkinakis (right shoulder trouble) came into the match dealing with physical issues.

Draper takes on Australian favourite Aleksandar Vukic after Novak Djokovic defeated Tomas Machac despite taking a medical timeout

Novak Djokovic has warned fans are overstepping the mark after riding an emotional rollercoaster through to a mind-boggling 67th grand slam second-week appearance

Jacob Fearnley is out after a straight-sets defeat to Alexander Zverev before Jack Draper takes on Australian favourite Aleksandar Vukic