British men’s number one Kyle Edmund is out of the Australian Open after a disappointing 6-3 6-0 7-5 first-round loss to Tomas Berdych.
The 24-year-old, a semi-finalist last year, appeared heavy-legged in the heat against the Czech who looked back to his best after an injury-hit 2018.
Edmund only managed one break point against the Berdych serve all match.
Elsewhere, compatriot Dan Evans won his first Grand Slam match since his return from a drugs ban.
The 28-year-old beat fellow qualifier Tatsuma Ito 7-5 6-1 7-6 (10-8) of Japan, throwing his racquet in joy at the end.
Evans returned from a one-year ban in April 2018 after testing positive for cocaine during 2017’s Barcelona Open.
“After the tournament I’ll look back. I’m looking forward to getting out there again.
“I really enjoy Melbourne and I felt pretty comfortable today. It was hot out there, but was cooling down towards the end.”
Evans could face Roger Federer next if the 20-time Grand Slam champion can overcome Denis Istomin.
“The last time I played Roger was a bit of a blur,” Evans said of his only encounter against Federer, at Wimbledon in 2016, which he lost 6-4 6-2 6-2.
“He’s the greatest of all time and it was my first time on Centre Court.”
Andy Murray, a five-time finalist at Melbourne Park, faces world number 22 Roberto Bautista Agut in what could be his final match.
The three-time Grand Slam winner has said he is “still in a lot of pain” following hip surgery last January and cannot play to his old level.