The American 44-year-old will be present in Konta's camp for the opening tournament of the new campaign in Brisbane, starting on December 31.
During that successful period, which extended from 2004 to early 2011, Sharapova won both her hard-court grand slam titles - in NY and Melbourne - while also climbing to No 1 in the world. "2017 has been incredible but I feel like there is so much more to come", Konta told the WTA website.
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For now, though, McFarland's nomination is on hold, and she hasn't publicly responded to questions about her exchange with Senator Booker.
"I'm delighted to confirm that Michael Joyce will be joining my team for 2018", Konta told the WTA. "The plan is for Michael to travel with me full time through 2018". Her strong play in 2017 sets her up to be a top contender in the coming year.
He worked with Victoria Azarenka earlier this year and Konta is looking to take her game to a higher level with the new man on board. Now, she aims to rebuild herself alongside Joyce.
She hasn't won a match since the third round of the Premier 5 event in Cincinnati in mid-August, and has a semifinal (and 780 ranking points) defend at the Australian Open next month.