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Rafael Nadal returns to Fabio Fognini of Italy during the quarter-finals of the Barcelona Open on Friday. Nadal is trying to equal Guillermo Vilas’s record of 49 clay-court titles. Image Credit: AP

Barcelona: Rafael Nadal admitted he is controlling the nerves that clouded his 2015 season better after seeing off a second set fightback from Fabio Fognini to reach the Barcelona Open semi-finals with a 6-2, 7-6 (7/1) win on Friday.

Fognini had won three of the previous five meetings between the pair, including in Barcelona and at the US Open last year.

And the Italian looked set to take the match to a deciding set as he reeled off four straight games to move from 2-0 down to 4-2 up in the second set.

“Honestly, if that had happened last year it could have provoked a flurry of nerves,” added Nadal.

“This year things are a little different, I am accepting every situation and I don’t have the feeling of being constantly nervous.”

However, Nadal, who won his first tournament of the year in Monte Carlo last week, broke back when Fognini was serving for the set at 5-4.

And despite some brilliant play by the Italian to fend off three match points in his next service game, Nadal dominated the tie-break 7-1 to reach his first semi-final in Barcelona for three years.

“You can be dominating the point, but because he is so quick you are always under pressure because you feel at any moment he can change the dynamic of the point,” added Nadal.

Victory also keeps Nadal on course to match Argentine legend Guillermo Vilas’s record of 49 clay-court titles in Sunday’s final.

Earlier, defending champion Kei Nishikori extended his winning streak in Barcelona to 13 matches as he overcame stiff first-set resistance to beat Ukrainian Alexandr Dolgopolov 7-5, 6-0.

Nishikori had to save four set points when serving at 5-4 down in the first set, but held on before romping through the second set.

“He had a couple of set points. It was great to save them and after that I gained a bit of confidence and I was a different player,” Nishikori told Spanish TV station Teledeporte.

“He is a tricky player, he has a great serve and can be really aggressive. I struggled a bit in the first set, but I was much better in the second and happy to get through today.”

Nishikori will face Frenchman Benoit Paire in semi-finals after the sixth seed overcame Tunisia’s Malek Jaziri 3-6, 7-5, 6-1.

In Stuttgart, defending champion Angelique Kerber faces Petra Kvitova of the Czech Republic in the Porsche Grand Prix semifinals, and top-seeded Agnieszka Radwanska plays qualifier Laura Siegemund.

The second-seeded Kerber easily overcame seventh-seeded Carla Suarez Navarro of Spain 6-2, 6-4 in Friday’s quarterfinals, with the German needing just 29 minutes to win the first set and 72 minutes overall at the indoor clay-court tournament.

“I gathered a lot of self-confidence through winning the Australian Open (in January) and the other successes,” said Kerber, who lost to Suarez Navarro in the quarterfinals in Stuttgart two years ago. “I really wanted revenge today.”

Fifth-seeded Kvitova had a tougher task defeating third-seeded Garbine Muguruza of Spain 6-1, 3-6, 6-0.

Siegemund upset sixth-seeded Roberta Vinci 6-1, 6-4 in 76 minutes to improve on her previous best of a quarterfinal place in Charleston this month. The 28-year-old German had already upset fourth-seeded Simona Halep on Thursday and is set to improve on her career-high No. 71 ranking.

“I was pretty tired in the second set but you carried me through,” Siegemund told her hometown crowd.

Siegemund next faces top-seeded Radwanska, who defeated Karolina Pliskova of the Czech Republic 6-2, 7-6 (8) in the last quarterfinal.