At the Stuttgart Open, Swiatek continued her perfect career (8-0 in her two appearances) and increased her overall WTA singles finals record to 13-3.
She won the final seven games after breaking serve four times. In winning, Jabeur scored 25 goals, more than double Haddad Maia's tally of 11.
Sabalenka is going for her first Stuttgart victory after finishing second twice in a row to Iga Swiatek and Ashleigh Barty in 2021 and 2022, respectively.
The victory proved to be a personal landmark for the American who has not lost the opening match of a tour level competition in the last 12 months.
While Sakkari faced 10 break points and only managed to save four of them, Pliskova only faced one and handled it with ease.
Swiatek made her tournament debut in Stuttgart last year while riding a 37-match winning streak, and she went on to win her fourth straight championship.
The Latvian smashed four aces, recorded 80% and 78% on the first and second serves respectively, and returned all five available break points to mark a dominant win.
Murray has been on a fine run of form so far in this year's grass season and will look to carry that straight through to Wimbledon.
Andy Murray tapped into his former self on Friday as he beat top seed Stefanos Tsitsipas to make it through to the semis.
The 46-time tour-level champion dropped the first three games of the match, but eventually regained his stride.