The Belarusian world number two proved too powerful for the 12th seed with a 6-3, 6-2 drubbing in 76 minutes to claim her second Grand Slam crown on Rod Laver Arena.
It capped an incredible display of power and poise from Sabalenka over the past fortnight, with the 25-year-old surging to the title without losing a set through her seven matches.
The last time the Australian Open witnessed a successful women’s title defense was in 2013 when fellow Belarusian Victoria Azarenka achieved the feat.
With her latest exploits, Sabalenka cemented her reputation as one of the game’s most consistent contenders at Grand Slams, reaching at least the semi-finals in her past six majors, making three finals and winning twice.
“It’s been an amazing couple of weeks. I couldn’t imagine myself lifting this trophy one more time and it’s an unbelievable feeling right now.
Aryna Sabalenka also had words of encouragement for Zheng Qinwen.
“I know this feeling It is tough to lose in a final but you are such an incredible player, such a young girl.
In vivid red, she overwhelmed Zheng with her crushing groundstrokes deep into both corners and a consistently reliable serve.“It’s my first final and I’m feeling a little bit of pity,” said Zheng. “I feel very complicated because I feel like I could’ve done it better.
“But I enjoyed playing in this Australian Open, it’s an amazing memory for me. I’m sure there is going to be more and better in the future.”
Belarusian Opened with a Comfortable Serve
The Belarusian opened with a comfortable serve then got a look at two break points at 15-40 in Zheng’s opening service game when the Chinese star sprayed a backhand wide.
She seized the chance, attacking her opponent’s second serve for the break.
Sabalenka consolidated on serve for 3-0, but only after saving three break points as Zheng’s nerves settled and she worked to get into the contest.
The Chinese star finally got on the board as her serve hit its mark in game four, with two big unreturnable aces and a forehand winner giving her confidence.
But she had few answers to the booming Sabalenka serve, struggling to get the ball back over the net and into any rallies.
Zheng Saved three Set Points
Zheng saved three set points with a pair of aces and a winner to hold for 3-5, but it was delaying the inevitable as Sabalenka closed out the set on serve in 33 minutes.
Three double faults, including on break point, immediately put Zheng on the back foot on the second set as the pressure took its toll.
And there was no way back as she conceded another break to slump 4-1 behind when Sabalenka perfectly played a drop shot.
Fighting until the end, Zheng saved four championship points before the second seed closed out the match to bank her 14th career title.
Aryna Sabalenka will remain at number two behind Iga Swiatek, who crashed out in the third round.