Thursday's Sports in Brief

TENNIS

PARIS (AP) Roger Federer pulled out of the French Open on Thursday, ending his record of appearing in 65 consecutive Grand Slam tournaments dating back to 2000.

The 17-time major champion, who had a knee operation this year but returned to play at the Monte Carlo Masters in early April, has been dealing with a back problem that has limited his schedule in recent weeks.

''I regret to announce that I have made the decision not to play in this year's French Open,'' Federer said in a statement on his website. ''I have been making steady progress with my overall fitness, but I am still not 100 percent and feel I might be taking an unnecessary risk by playing in this event before I am really ready.''

Last week, Federer played at the Italian Open and lost to Dominic Thiem in the third round. He withdrew from the Madrid Open the previous week because of back pain.

The last major Federer missed was the 1999 U.S. Open.

OLYMPICS

ATLANTA (AP) – Concerned about the threat of the Zika virus, USA Swimming has moved a pre-Olympic training camp from Puerto Rico to Atlanta.

Frank Busch, the national team director, sent out a letter Thursday to all national team athletes and coaches telling them of the change.

''I think it's the prudent thing to do,'' Bob Bowman, who coaches 18-time gold medalist Michael Phelps, told The Associated Press.

The U.S. team is still scheduled to hold a training camp in San Antonio from July 11-21.

After that, the team had been planning to make a stop in Puerto Rico for several more days of training before traveling on to Rio de Janeiro, where the Olympic swimming competition begins Aug. 6.

USA Swimming's decision follows a move by Major League Baseball to shift two regular-season games out of San Juan because of players' concerns about the virus. The May 30-31 series between the Marlins and the Pittsburgh Pirates will now be played in Miami.

RIO DE JANEIRO (AP) – The head of security for the state of Rio de Janeiro wants soldiers to start policing the city immediately with the Rio Olympics set to start in 2 1/2 months.

State Security Secretary Jose Mariano Beltrame, speaking Thursday alongside Defense Minister Raul Jungmann, says the ''request for external forces for Rio de Janeiro'' will help local police to battle the city's rising crime.

Brazil has already committed to using about 85,000 soldiers and police to guard the Olympics – about twice as many as London four years ago.

The state of Rio de Janeiro has cut about $550 million for its security budget – about 20 percent – and Beltrame has repeatedly said he would like to have more police.

GOLF

Muirfield was stripped of its right to host the British Open after the Scottish club voted against admitting female members in a move that provoked sharp criticism from players and lawmakers Thursday.

The Honourable Company of Edinburgh Golfers, which owns Muirfield, announced its decision to retain the club's male-only policy following a ballot of its members. A two-thirds majority was required for change. Out of 616 members who voted, 36 percent were against allowing women.

Within minutes, the Royal and Ancient, which runs the British Open, said Muirfield was off the list of 10 courses that can host golf's oldest major championship.

NEW YORK (AP) – Phil Mickelson has agreed to forfeit nearly $1 million that authorities say was unfairly earned on a stock tip from a professional gambler, part of an insider trading probe that resulted in two arrests but spared the wealthy pro golf star from facing criminal charges.

The Securities and Exchange Commission and U.S. Attorney Preet Bharara announced an indictment Thursday against the gambler, William Walters, and a former corporate board member of Dean Foods Co., Thomas Davis, alleging that the pair used non-public information about the company to make tens of millions of dollars in illicit stock trades between 2008 and 2012.

In 2012, the SEC says, Walters called Mickelson, who owed him money, and urged him to trade stock of the Dallas-based distributor of Land O Lakes butter and other dairy products. The SEC says Mickelson made the trade the next day and reaped a profit of $931,000 that he used to help pay off the debt.

Muirfield was stripped of its right to host the British Open after the Scottish club voted against admitting female members in a move that provoked sharp criticism from players and lawmakers Thursday.

The Honourable Company of Edinburgh Golfers, which owns Muirfield, announced its decision to retain the club's male-only policy following a ballot of its members. A two-thirds majority was required for change. Out of 616 members who voted, 36 percent were against allowing women.

Within minutes, the Royal and Ancient, which runs the British Open, said Muirfield was off the list of 10 courses that can host golf's oldest major championship.

BASKETBALL

MILWAUKEE (AP) – The Milwaukee Bucks say their organization inadvertently provided tax information of employees, including players, to someone who was impersonating the team's president over email.

The Bucks said Thursday that the ''security incident'' involving the W-2 forms of all 2015 employees was reported to the IRS and FBI after being discovered earlier this week. The team says it arranged for employees to have access to credit monitoring and identity restoration services.

The tax information was provided by a Bucks worker before it was determined that the request came from a ''spoofed email address'' for team president Peter Feigin. The Bucks say the mistake was the result of human error, and that they were providing additional privacy training to staff and implementing additional preventative measures.

HOCKEY WORLDS

MOSCOW (AP) – The United States upended the odds and downed the Czech Republic 2-1 in a shootout to reach the semifinals of the ice hockey world championship on Thursday.

That sets up a semifinal on Saturday against Canada, which pounded Sweden 6-0.

Russia and Finland contest the other semifinal.

Loaded with young talent, the Americans came into the game as heavy underdogs after losing four times in the group stage. But they managed to eliminate an experienced Czech team that won its group.

Auston Matthews, still only 18, scored in the second period to tie the game and later scored the only goal in the shootout, sliding the puck between Czech goaltender Dominik Furch's legs.

Matthews is widely expected to be the No. 1 pick in next month's NHL draft.