SOFIA, Bulgaria (AP) -- Flavia Pennetta of Italy beat Carla Suarez Navarro of Spain 6-4, 6-2 on Saturday to set up a final against Andrea Petkovic of Germany at the Tournament of Champions.

Pennetta erased an early break in the first set and later won four straight games to take a 2-0 lead in the second. Suarez Navarro fought back to level at 2-2, but Pennetta won the last four games as well for her fourth victory in six meetings against the Spaniard.

Earlier, Petkovic defeated Spain's Garbine Muguruza 6-1, 6-4.

The fourth-seeded Petkovic dominated Muguruza at the start of the match and lost just five points on her serve in winning the first set in 24 minutes.

Muguruza got an early break in the second to go up 2-0 before Petkovic rallied to win five consecutive games. The Spaniard earned another break to cut the deficit to 5-4 but couldn't mount a comeback against the more experienced Petkovic.

''I was glad I could serve really well in the end of the match and close it out there,'' Petkovic said.