The Australian Open is the biggest tournament in Australia's tennis calendar.
Enough reason for the big personalities from sports, former tennis champions and other celebrities to catch their favourite tennis stars in action.
Unseeded Briton Kyle Edmund bludgeoned his way to a shock 6-4, 3-6, 6-3, 6-4 victory over third seed Grigor Dimitrov to claim his place in the Australian Open semi-finals on Tuesday.
And one of Britain's favourite tennis star, Tim Henman, was right there to witness Edmund's feat.
IMAGE: Former British tennis player Tim Henman watches Kyle Edmund of Great Britain win his quarter-final match against Grigor Dimitrov of Bulgaria. Photograph: Michael Dodge/Getty Images
IMAGE: He is the captain of the Australian national cricket team. But these days is he spotted more at the Australian Open tennis courts. Steven Smith was again seen with his fiancee Dani Willis. Photograph: Michael Dodge/Getty Images
IMAGE: Cyclist Cadel Evans was also seen enjoying the quarter final match between Rafael Nadal of Spain and Marin Cilic of Croatia. Photograph: Mark Kolbe/Getty Images
On Monday, six-time champion Novak Djokovic was knocked out of the Australian Open.
Djokovic lost 6-7 (4), 5-7, 6-7 (3) to 21-year-old South Korean Chung Hyeon in a gripping fourth round tie.
And watching in the stands were some famous faces from the sporting world…
IMAGE: Australia's cricket captain Steve Smith probably telling his fiancee, Dani Willis, which way Djokovic should have played a shot. Photograph: Cameron Spencer/Getty Images
IMAGE: Australian tennis legend Rod Laver (right) enjoying the proceedings during the thrilling fourth round encounter. Photograph: Cameron Spencer/Getty Images
IMAGE: Former Australian Formula 1 driver Mark Webber (right) was a few of the famous faces to grace the fourth round encounter. Photograph: Cameron Spencer/Getty Images
IMAGE: Melbourne Victory's A-League footballer James Troisi and his friends watch the fourth round clash that saw the South Korean Chung reach his first grand slam quarter-final. Photograph: Cameron Spencer/Getty Images