Novak Djokovic, of Serbia, returns a shot to John Isner during their match at the BNP Paribas Open tennis tournament, Wednesday, March 18, 2015, in Indian Wells, Calif. Djokovic won 6-4, 7-6 (5). (AP Photo/Mark J. Terrill)

Novak Djokovic didn't have to hit a ball to get into the semifinals of the BNP Paribas Open on Thursday when opponent Bernard Tomic withdrew because of a back injury. Tomic's withdrawal was announced about five hours before he was to play the top-ranked Djokovic, a three-time champion at Indian Wells who won his first three matches in straight sets. Djokovic's semifinal opponent on Saturday will be fourth-seeded Andy Murray, who defeated No. 12 seed Feliciano Lopez 6-3, 6-4 for his 497th career victory.

Roger Federer, of Switzerland, reacts after winning his match against Jack Sock at the BNP Paribas Open tennis tournament, Wednesday, March 18, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

Novak Djokovic defeated John Isner 6-4, 7-6 (5) to reach the quarterfinals of the BNP Paribas Open on Wednesday night in pursuit of his fourth career title in the desert. Neither led by more than a point until Isner netted a backhand volley to put Djokovic ahead 5-3. Djokovic answered with a 116-mph ace for his first match point. He can be a dangerous player on any surface, so I'm just pleased with this match.'' Roger Federer dominated Jack Sock in a 6-3, 6-2 victory, with the four-time tournament champion winning 14 consecutive points in the second set.

Andy Murray, of Great Britain, returns to Adrian Mannarino, of France, during their match at the BNP Paribas Open tennis tournament, Wednesday, March 18, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

American tennis player Wayne Odesnik was banned Wednesday for 15 years after a second doping violation, a sanction that essentially ends his career and was widely applauded by several top players. The International Tennis Federation said the 29-year-old Odesnik tested positive for several banned substances, including steroids, during tests in December and January. ''Players and athletes should know if they cheat, they get caught,'' second-ranked Roger Federer said from California. ''I'm all for a clean sport, and that's why you've got to catch those guys who don't do the things they are supposed to be doing.'' Odesnik was first sanctioned in 2010 for the possession of human growth hormone.

The planned renovation of Roland Garros was on hold after Paris city council allowed a new study of the land use on Wednesday. Supported by local residents and environmentalists at the city council, a new project offers an alternative to the controversial expansion that is scheduled to be completed in 2017. The botanical garden's 19th century greenhouses, a few hundred meters from Court Philippe Chatrier, host a large variety of tropical and local flowers. The Roland Garros plans have been controversial from the start, after the French Tennis Federation decided five years ago to keep the clay-court major there and renovate the existing site, rather than moving the tournament.

Serena Williams waves after defeating Stephens at the BNP Paribas Open tennis tournament, Tuesday, March 17, 2015 in Indian Wells, Calif. Williams won 6-7 (3), 6-2, 6-2. (AP Photo/Mark J. Terrill)

Struggling with her serve and a rash of errors, Serena Williams overcame a slow start to beat Sloane Stephens 6-7 (3), 6-2, 6-2 in the fourth round at the BNP Paribas Open on Tuesday, extending her winning streak to 14 matches. Maria Sharapova struggled mightily, too, losing 3-6, 6-3, 6-2 to defending champion Flavia Pennetta, who won her ninth straight match after becoming emotional and leaving the court in the first set. Four-time Indian Wells champion Roger Federer defeated Andreas Seppi 6-3, 6-4, avenging his third-round loss to Seppi at the Australian Open. He netted a forehand to give Federer a fourth match point in the next game, and the Swiss star closed it out with a forehand winner in the corner.

Coach Patrick Hello Tennis Buddies Kids & Parents!

I just wanted to let you know that pictures will be this weekend. Here is a schedule:

7:00 Pros Singles
7:15 Grips Singles
7:30 Rafas Singles
7:45 Smashers Singles
8:30 Pros Red Racquets
8:45 Smashers Red Racquets
9:00 Rafas Red Racquets
9:30 Pros Orange Crushers
9:45 Smashers Orange Crushers
10:00 Rafas Orange Crushers
10:15 Djokers Orange Crushers

See you all on the courts! :) Coach Patrick

Nick Kyrgios of Australia chases down a shot to Andy Murray of Britain during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 27, 2015. (AP Photo/Andy Brownbill)

INDIAN WELLS, Calif. (AP) -- Nick Kyrgios of Australia says he will be out at least 2 to 4 weeks with a foot injury.

Serena Williams returns to Zarina Diyas, of Kazakhstan, during their match at the BNP Paribas Open tennis tournament, Sunday, March 15, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

WASHINGTON (AP) -- Serena Williams is returning to play World TeamTennis for the Washington Kastles for the first time since 2011.

Maria Sharapova, of Russia, acknowledges the crowd after defeating Victoria Azarenka, of Belarus, in their match at the BNP Paribas Open tennis tournament Monday, March 16, 2015, in Indian Wells, Calif. Sharapova won 6-4, 6-3. (AP Photo/Mark J. Terrill)

Maria Sharapova defeated Victoria Azarenka 6-4, 6-3 on her sixth match point in a third-round pairing of former No. 1-ranked players at the BNP Paribas Open on Monday. Sharapova hit 23 winners, one more than Azarenka, and had 10 fewer unforced errors than Azarenka's 37 to even their all-time series at seven wins apiece. Top-ranked Novak Djokovic beat Albert Ramos-Vinolas 7-5, 6-3, rallying from a 3-1 deficit in the first set and earning a crucial break with a forehand winner go up 5-3 in the second set. Sharapova took a 40-15 lead to set up her fifth match point, but netted a forehand.

Serena Williams celebrates after defeating Zarina Diyas, of Kazakhstan, in their match at the BNP Paribas Open tennis tournament, Sunday, March 15, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

Serena Williams is settling right into the BNP Paribas Open, producing a quick, business-like effort in advancing to the fourth round Sunday while enjoying her return after a 14-year absence. She beat up-and-comer Zarina Diyas of Kazakhstan 6-2, 6-0 in 53 minutes, a routine affair compared to the emotional roller coaster she rode Friday night after walking onto stadium court for the first time since being driven away by a hail of boos as a teenager in 2001. ''It definitely felt back to normal out there,'' Williams said. I feel really glad to be here and still be in the tournament.'' Four-time Indian Wells winner Roger Federer needed 10 more minutes than Williams to dispatch Diego Schwartzman 6-4, 6-2 in the men's second round.

Donald Young of the U.S returns the ball to Britain's James Ward during the Davis Cup tennis match at the Emirates Arena, Glasgow, Scotland, Sunday, March 8, 2015. (AP Photo/Jeff Holmes, PA Wire)

INDIAN WELLS, Calif. (AP) -- Donald Young led a parade of upsets at the BNP Paribas Open on Sunday, with the American beating 31st-seeded Jeremy Chardy 6-4, 6-2.

Novak Djokovic, of Serbia, reacts to the crowd after winning is match against Marcos Baghdatis, of Cyprus, at the BNP Paribas Open tennis tournament, Saturday, March 14, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

Defending champion Novak Djokovic dispatched Marcos Baghdatis 6-1, 6-3 in 59 minutes to reach the third round of the BNP Paribas Open on Saturday night, improving his record to 8-0 against the Cypriot. ''I thought I had a very solid performance,'' Djokovic said on court. ''I managed to stay aggressive from the baseline and served very well.'' Djokovic is the defending champion at Indian Wells, where he is bidding to win his 50th career title. ''It does feel that this is one of the strongest tournaments that we have on the tour after the Grand Slams,'' Djokovic said.

CORRECTS DAY AND DATE - Serena Williams returns to Monica Niculescu, of Romania, in a qualifying tennis match at the BNP Paribas Open tennis tournament, Friday, March 13, 2015, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)

Serena Williams was a mess playing her first match at Indian Wells in 14 years. Williams defeated Monica Niculescu 7-5, 7-5 Friday night in a wildly inconsistent performance that included 48 unforced errors and 12 aces. Williams rallied from a 5-3 deficit in the first set and recovered after blowing three leads in the second set, finally winning on her fourth match point in her first tournament since earning her 19th Grand Slam title at the Australian Open in January.