ROME — Roger Federer kept up his pursuit of the elusive Italian Open title with a 6-3, 6-3 win over sixth-seeded Tomas Berdych Friday to reach the semifinals of the clay-court tournament. Along with Monte Carlo, Rome is one of only two Masters series titles that the 17-time Grand Slam champion has never won. Federer will next face either seven-time Rome champion Rafael Nadal or eigth-seeded Stan Wawrinka, who were to play in the night session at the Foro Italico. Top-ranked Novak Djokovic, meanwhile, was pushed to three sets for the third consecutive match in a 6-3, 3-6, 6-1 win over fifth-seeded Kei Nishikori. The defending champion also went the distance by Nicolas Almagro and Thomaz Bellucci in his opening two matches. Still, he extended his winning streak to 20 matches. “(There were) ups and downs for my side in all three matches,” Djokovic said. “But in the end (it's about) just finding a way. This is what it takes to win, just finding the proper way and managing to perform your best when it matters.” Djokovic let out a loud roar and threw his arms forward in a windmill action when he broke Nishikori's serve early in the third set to take control. “That break on 2-1 in the third set was crucial,” Djokovic said. “I knew that breaking his serve would give me wings. ... I started swinging through the ball better and made less unforced errors and the match was gone in a very short time.” Djokovic's semifinal opponent will be seventh-seeded David Ferrer, who beat David Goffin of Belgium 6-2, 4-6, 6-3. In women's action, second-seeded Simona Halep routed qualifier Alexandra Dulgheru 6-1, 6-0 in an all-Romanian matchup. Halep will next face 10th-seeded Carla Suarez Navarro of Spain, who eliminated last week's Madrid Open champion Petra Kvitova 6-3, 6-2. Also, 21-year-old Daria Gavrilova of Russia beat Christina McHale of the United States 6-2, 6-4 in a matchup of two qualifiers. In her first Masters semifinal, the 78th-ranked Gavrilova will meet either two-time Rome champion Maria Sharapova or former No. 1 Victoria Azarenkoa, who were playing later. The 2010 US Open junior champion, Gavrilova lives in Australia and is awaiting a change in citizenship. She beat Sharapova in Miami this year. Under overcast skies with some rain drops falling briefly, Federer fell behind a break midway through the first set but recovered it immediately and cruised from there. Perhaps fatigued from his three-set win over Fabio Fognini a day earlier, Berdych struggled to get his first serve in and rarely pushed Federer into long rallies. Berdych attempted to take the initiative while serving at 3-4 in the first set but Federer produced a spectacular backhand cross-court passing shot with a flip of his wrist that left the Czech player looking on in admiration. ]“I'm hitting my backhand quite well at the moment,” Federer said. Federer went on to break Berdych's serve to take a 5-3 lead and quickly served it out. — AP