Lleyton Hewitt’s doubles appearance at Estoril this week won't be a one-off, with the veteran saying he plans to play in a few more events.

It could be called a comeback, except that Hewitt says he never officially stopped.

"I don't know if I retired in doubles," the former No. 1 said to press at Estoril, having stopped playing singles at the 2016 Australian Open. "Since I retired at the Australian Open, I've played doubles at a few different tournaments...and then I played with Sam Groth again at the Australian Open this year, and was surprised by my level."

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Now captaining the Australians in Davis Cup, Hewitt is playing this week with the up-and-coming Alex de Minaur, who he has been helping on tour.

The 19-year-old de Minaur received a wild card in the singles, winning his first-round match.

"I know it means a lot to Alex playing with me this week. I really enjoy working with him," said Hewitt.

The two-time Grand Slam champion also said on social media that he was "planning on playing a few more events," though he does not know exactly which ones he will be entering.

Hewitt and De Minaur won their opening-round match against Michael Venus and Raven Klaasen in Estoril, 6-4, 6-4.

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