Djokovic got his semifinal slot with a 4-6, 6-4, 7-5, upset of second-seeded Tommy Robredo.
The other semifinal pits top-seeded Nikolay Davydenko against third-seeded Ivan Ljubicic -- two players ranked in the top eight in the world. Davydenko rallied for a 6-7 (6-8), 6-4, 6-4, quarterfinal victory over Philipp Kohlschreiber, while Ljubicic on Friday defeated Florida Mayer, 6-4, 6-2.
The winners of Saturday's semifinal matches play Sunday for the tournament title and a first-prize of $193,000.
Celebrity Families of 2014 [PHOTOS]