Top-seeded Monica Seles of Yugoslavia and second-seeded Gabriela Sabatini of Argentina advanced to the semifinals of the Italian Open with easy victories Friday.

But Martina Navratilova, the third seed, lost to Conchita Martinez.Seles beat Leila Meshki of the Soviet Union 6-0, 6-1, and Sabatini defeated Jennifer Capriati 6-0, 6-2.