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World No.1 Ashleigh Barty had some fun in her press conference following her win against Alja Tomljanovic in Adelaide.

"Who is this? This is Ashleigh Barty," the world No. 1 said, casually answering a journalist's phone in her press conference. 

"Does anyone know a Kez, it has a grandma emoji?"

The journalist suggested Barty put it on airplane mode, but she decided to just answer it, prompting a room full of laughter.

Whoever Kez is, he or she didn't seem to get the joke and hung up. Barty was shocked.

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The French Open champion will meet Marketa Vondrousova for a spot in the Adelaide semifinals.