INDIAN WELLS, Calif. (AP) – No. 7 Andy Roddick beat defending champion Novak Djokovic 6-3, 6-2 Friday and will face No. 1 Rafael Nadal in the semifinals of the BNP Paribas Open.

Nadal, trying for his second Indian Wells title in three years, rolled to a 6-2, 6-4 victory over Juan Martin del Potro.

No. 2 Roger Federer, who won the title three consecutive years beginning in 2004, faces No. 4 Andy Murray on Saturday in the other semifinal.

Roddick’s game was solid all-around against No. 3 Djokovic. The error-prone Serbian made 30 unforced errors, 18 more than his American opponent.

Roddick shortly afterward went out to play a doubles semifinal with partner Mardy Fish.

The singles semifinals appearance will be Roddick’s third at Indian Wells. He lost to Lleyton Hewitt in 2005 and to Nadal in 2007.

Djokovic was extremely disappointed with his play against Roddick.

“It’s just one of the days when you really don’t feel comfortable on the court,” he said. “I just didn’t have any momentum – no feel for the ball, no movement. Just no solutions. It was all me making an incredible amount of unforced errors.

“This was one of the worst matches, certainly, I played.”

Nadal covered the court extremely well in his win over del Potro, keeping the ball in play even when the Argentine had him racing from side to side. Often, Nadal would be on the run and slash a winner crosscourt or down the line. He hit 25 winners, 13 with his forehand.

Nadal, who supplanted longtime No. 1 Federer at the top of the rankings last year, is playing in the desert tournament for the fifth time. He has made it at least to the semifinals each of the past four years and took the title in 2007 with a win over Djokovic.

On the women’s side, Defending champion Ana Ivanovic beat Anastasia Pavlyuchenkova 6-2, 6-3 Friday night to reach the final of the BNP Paribas Open.

Ivanovic, a 21-year-old Serb, dominated the 17-year-old schoolgirl from Moscow, who had upset No. 3 Jelena Jankovic and No. 10 Agnieszka Radwanska on the way to the her first tour semifinal. Pavlyuchenkova came into the tournament ranked No. 42.

No. 7 Ivanovic will face No. 6 Vera Zvonareva, a 6-3, 6-3 winner over Victoria Azarenka, in Sunday’s championship match.

No. 6 Zvonareva, a 24-year-old from Moscow, made it to the championship for the first time in five appearances at Indian Wells. She previously had advanced as far as the quarterfinals in the event three times, including last year.

when she lost to eventual champion Ana Ivanovic.

“It’s my first finals here and it’s a big event, great tournament, and I’m really happy about it,” Zvonareva said.

The 19-year-old Azarenka, from Belarus, lost for only the second time in 19 matches this year. Zvonareva improved to an identical 17-2.