Saka has been out since December with a hamstring injury which required an operation, while Martinelli suffered a hamstring problem earlier this month, and the pair are currently on the sidelines.
In Saturday's final, the Russian prodigy will take on the winner of Friday's second semifinal between Clara Tauson of Denmark and Karolina Muchova of the Czech Republic.
Teenager Mirra Andreeva became the youngest player to reach the Dubai Championships final after beating Elena Rybakina 6-4, 4-6, 6-3 on Friday. The 17-year-old Andreeva trailed 3-1 in the third set ...