The scores in the match between the fellow Spaniards and the first and eighth seeds, respectively, were 6-3, 6-4.
Also, reigning two-time runner-up Filippo Volandri of Italy, the second seed, beat unseeded Albert Montanes of Spain, 6-4, 6-2; unseeded Nicolas Lapentti of Ecuador topped No. 3 seed Gilles Simon of France, 6-0, 6-1; and No. 4 Nicolas Almagro of Spain beat unseeded Martin Vassallo-Arguello of Argentina, 6-2, 6-2.
In Saturday's semifinals, Volandri goes against Almagro; and Ramirez Hidalgo faces Lapentti.
Sunday's tournament finals winner will earn $56,000.