Dallas Cowboys defensive tackle Josh Brent retired from football at the age of 25 on Thursday, saying “doing the right things in life” is more important as he prepares to defend himself against a manslaughter charge in the drunken-driving crash that killed a teammate.

Brent said he had “given a lot of thought” to his decision. His football career has been on hold since the Dec. 8 crash that killed Jerry Brown, a practice squad player, college teammate and close friend.

“I am at a point where my main focus is all about getting the priorities in my life in order,” Brent said in a statement provided by the team.

Suburban Dallas police accused Brent of driving with a blood-alcohol content more than twice the legal limit the night of the crash. . . .

The Santa Clara (Calif.) County District Attorney’s office said it won’t pursue assault charges against San Francisco 49ers linebacker Ahmad Brooks, who played at Hylton and Virginia, because of insufficient evidence in the case. . . .

Indianapolis Colts tight end Weslye Saunders has been suspended eight games without pay after violating the league’s policy on performance-enhancing substances.

Hockey

Washington Capitals ownership recently refinanced the team’s debt with a $100 million loan led by Citigroup, according to people close to the team who requested anonymity because the organization’s policy is not to comment on finances. The move was in response to the maturation of another loan, which was used to help finance the 2010 purchase of the Washington Wizards and the portion of the Verizon Center that Ted Leonsis and his investment group did not own.

Forbes, which reported the refinancing, values the Capitals at $250 million, three times what Leonsis paid for the team in 1999. Leonsis owns the teams and building through Monumental Sports and Entertainment, a holding company that includes several local investors. One person with knowledge of the situation said the loan was oversubscribed, and that the proceeds will be reinvested in the holding company.

— Thomas Heath

The Colorado Avalanche agreed to a five-year extension with forward Matt Duchene that will run through the 2018-19 season and is worth a reported $30 million.

Golf

China’s Dou Zecheng beat fellow 16-year-old Sam Horsfield of England,1 up, in the U.S. Amateur Public Links in Lorton to advance to the quarterfinals.

Dou took the lead with a par on the par-3 16th at Laurel Hill Golf Club and matched Horsfield with a par on the par-4 17th and a birdie on the par-5 18th to close out the match.

Dou, a 3-and-2 second-round winner over Sam Saunders of Albuquerque, in the morning, will face Jordan Niebrugge of Mequon, Wis. Niebrugge beat Canada’s Justin Shin, 5 and 3, in the third round.

In the other upper-bracket quarterfinal, Austin Smotherman of Loomis, Calif., will play James Erkenbeck of San Diego.

In the lower bracket, Robby Shelton IV of Wilmer, Ala., will face Michael Kim of Del Mar, Calif., while Eric Sugimoto of San Diego will play Kyle Henning of Brookfield, Wis. . . .

Daniel Summerhays rebounded from a disappointing finish last week at the John Deere Classic to take the lead in the rain-delayed first round of the PGA’s Sanderson Farms Championship in Madison, Miss. . . .

Alison Walshe, chasing her first victory in four years on the LPGA Tour, shot a 6-under 65 to take a one-stroke lead after the opening round of the steamy Marathon Classic in Sylvania, Ohio.

Pro basketball

Elena Delle Donne scored 23 points and the Chicago Sky routed the New York Liberty, 75-55, in a WNBA matinee in Newark.

Later, Delle Donne became the first rookie to lead the league’s all-star voting when the starters were announced.

Delle Donne received 35,646 votes, nearly 2,000 more than Los Angeles Sparks forward Candace Parker.

— From staff reports

and news services