The American will play her first, though unofficial, match of her comeback at the Mubadala World Tennis Championship, an exhibition event held for the men's players before the new season.
Williams looked far from full fitness just four months after the birth of her first child, and the former world No. 1 admitted it was not easy for her as she was constantly anxious for her baby. "First matches back are always super incredibly hard, especially after having a baby but it was great, I'm glad I could do it here". And I heard just yesterday that Serena is coming here, so it is obviously very exciting for the tournament.
Williams is expected to participate in the 2018 Australian Open in a quest to defend her title.
"I think it is great".
Murray's ranking has slumped outside the top 10 for the first time in a decade, but the 30-year-old is confident he can still make an impact in the Grand Slams once he gets back into the groove.
"Motherhood is phenomenal. I was a little anxious - I looked at my camp and asked, 'Is (my daughter) Olympia OK?' But it's really good to be back on the court".
"It's been a really roller coaster ride for me for a year and a half with this (elbow) issue.I've never had surgery in my life, I've never had any major injuries that kept me away from the tour for such a long time".
Andy Murray, meanwhile, will make his long-awaited return to the ATP Tour in the Brisbane International which starts today, after almost five months out through injury.
Abu Dhabi - Former world number one and 12-time major victor Novak Djokovic will face Spain's Roberto Bautista Agut in his first match in nearly six months at the Mubadala world championships on Friday. However, the Shenzhen Open begins proceedings on 31st December, which therefore means that the Latvian would most likely be scheduled on the second day for her opening match in the WTA International tournament.
"Obviously, a bit slow at the start".
The world number 15, who reached the final of the US Open before losing to Nadal, also welcomed the return of Djokovic and Williams. But despite also surrendering his world number one ranking during a frustrating year, Murray insists he won't be motivated exclusively by thoughts of Grand Slam glory once he gets back on court.