The Belarus player saw off the challenge from Kvitova in just over an hour, winning 6-3, 6-3.
Sabalenka finished the first set with an ace and lost just six points while serving.
The trend of her out-serving Kvitova continued in the second set with Sabalenka serving six more aces to Kvitova’s two and saving five break points.
Kvitova requested a medical timeout midway through the second set while 3-2 up and went off-court with her physio.
However, upon Kvitova’s return Sabalenka found her dominance once more and the 21-year-old pushed on to win 6-3.