Last week's Stuttgart Open saw Jabeur advance to the final four, but she withdrew with a 3-0 deficit from her semifinal match.
The top half of the draw is led by Iga Swiatek, who might face Emma Raducanu in the second round.
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.
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.
While Sakkari faced 10 break points and only managed to save four of them, Pliskova only faced one and handled it with ease.
Jabeur, a quarterfinalist the past three years in a row and a finalist in Charleston last year, defeated Dolehide in one hour and 21 minutes.
Both players had 13 successful swings, but Badosa made fewer unforced errors than Sherif, who had eight.
Gauff and Pegula have now won two championships this year after their first was won in a triumphant title defence at Doha in February.
Ryabkina had let a set and a 4-1 lead slip but recovered quite well to win the match and set up a last 32 tie clash against Spaniard Paula Badosa.
With her best Miami Open performance to date, she advanced one stage further last year and reached the Round of 16.