Three-time Grand Slam champion Andy Murray has hinted he could've played his last ever match at the Australian Open.
A straight sets defeat to Tomas Martin Etcheverry saw him knocked out in the first round in Melbourne for only the second time in his career.
The 36 year-old - who's reached the final five times - admits it's a "definite possibility" he won't be back.
Elsewhere in the men's singles, Stefanos Tsitsipas and Daniil Medvedev both advanced to the second round.
There was no dream return for Naomi Osaka at the Australian Open.
Playing her first Grand Slam match since becoming a mother, the two-time champion was beaten in straight sets by Caroline Garcia.
Caroline Garcia has beaten two-time women's singles champions Naomi Osaka at the Australian Open.
The Frenchwoman won the second set on a tie-break - 6-4 7-6 (7-2).
American teenager Coco Gauff dropped just three games against Anna Karolina Schmiedlova as she made it into the second round.
Wimbeldon champion Marketa Vondrousova is out though, suffering a shock exit to Dayana Yastremska of Ukraine.
