Williams had her left ankle worked on at the end of the first set but it didn't stop her dominating the second, in which she looked more like the player who has won 23 Grand Slam singles titles.
Serena Williams is sizing up Roger Federer after a dominant display in her first match of the Australian summer. "It's nice that I'm feeling as good as I am and played a wonderful match against Cameron".
"It is very exciting for both of us and I hope a lot of tennis fans tune in and watch it", said Federer after opening his Hopman Cup campaign with an easy singles win on Sunday. "It's just figure out the American summer, the clay, then the grass and how would that work, or is it just better to keep it like it was".
"I've played with some of the greatest doubles players in the world in Martina Navratilova and Martina Hingis, and I've also played against some of the best in Venus [Williams] and other great ones in the past".
Federer and Bencic will next take on Serena Williams and Frances Tiafoe to begin the new year with arguably the most anticipated match in the tournament's three-decade history.
The Greek pair, Sakkari and Tsitsipas, defeated the US Williams and Tiafoe duo 4-1, 1-4, 4-2 in the mixed double encounter, after just 53 minutes, securing a 2-1 advantage for the European team.
Her appearance in Perth is her first tournament since her US Open meltdown, where she was handed a series of code violations in her loss to Naomi Osaka in the final.
Norrie upset No. 15-ranked Tsitsipas 7-6 (8), 6-4 to give Britain the lead before Sakkari beat Boulter 6-0, 4-6, 6-2 in women's singles to level the tie.
Serena Williams cut a glamorous figure in a red mini dress on Monday, as she arrived for the Hopman Cup New Years Eve Ball in Australia. "What he has done in tennis over the past 15 or 20 years has been absolutely unbelievable".
I am collaborating with Tennis Tonic for the last 2 years following my passion for tennis. It's unbelievable I can say I can do that. It was a great match for me.
"Frances told me he felt the exact same thing I felt in my first match".