Napa, Calif. ? Oakland Raiders coach Tom Cable won’t face charges after being investigated over allegations that he assaulted one of his assistants, ending a two-month saga that was a cloud over the team’s season.

Napa County district attorney Gary Lieberstein said Thursday that the investigation concluded no charges were warranted.

Cable has denied the charges from the beginning and said shortly before the district attorney’s announcement that he trusted in the legal system. Cable said he did not intend to speak to the media again until today.

Commissioner Roger Goodell said last week that criminal charges need not be brought against Cable for the NFL to discipline him if he broke the league’s conduct rules.

“We will review the decision announced earlier today by the Napa District Attorney and the facts developed in the underlying investigation,” the league said in a statement Thursday. “Following that review, we will take appropriate action, if any, under our policies.”

The alleged attack occurred at the team’s training camp hotel on Aug. 5 in Napa, after Cable called Randy Hanson into a meeting with defensive coordinator John Marshall and defensive backs coaches Lionel Washington and Willie Brown.

Hanson told Yahoo! Sports this month that Cable came up from behind him and knocked him out of his chair. Hanson said he broke his jaw and cracked two teeth after hitting a table. Hanson also alleged that Cable threatened to kill him before the other coaches pulled him away.

NFL

L.A. waiver approved

Industry, Calif. — Gov. Arnold Schwarzenegger has signed a bill allowing the construction of a 75,000-seat stadium that developers hope will lure an NFL team to the Los Angeles area. Schwarzenegger announced the signing of the environmental exemption bill Thursday in Industry, where the stadium would be built about 15 miles east of Los Angeles. Officials say the stadium would generate more than 18,000 jobs and more than $762 million in economic output.

Colts WR nears return

Indianapolis — Colts receiver Anthony Gonzalez is almost ready to return to action. Gonzalez has been out since spraining ligaments in his right knee during a season-opening 14-12 victory over Jacksonville, and he has not practiced since. Gonzalez was primed to take over the No. 2 receiving spot after Marvin Harrison was released in the offseason, but the non-contact injury derailed those plans. Coach Jim Caldwell said Thursday that Gonzalez could practice this week.

GOLF

O’Hern opens with 63

Scottsdale, Ariz. — Australian Nick O’Hern shot a career-low 63 on Thursday for the Frys.com Open lead. O’Hern, who finished at 7 under, putted only nine times while posting a 28 on the par-35 back nine at Grayhawk.

Bob Heintz and Heath Slocum were one stroke back at 64, and D.A. Points, Rory Sabbatini, Greg Owen and Rickie Fowler shot 65s to finish two shots off the lead.

Garcia leads in Spain

Castellon, Spain — Defending champion Sergio Garcia shot an 8-under 63 on his home course to take the lead during the suspended first round of the Castello Masters. Garcia, winless this year, had a one-stroke lead over Australia’s Robert Allenby and Sweden’s Michael Jonzon.

Masters champion Angel Cabrera was disqualified for missing his tee time. After finishing second Wednesday in the Grand Slam of Golf in Bermuda, Cabrera was unable to make it the course on time.

TENNIS

Top seed falls in Moscow

Moscow — Qualifier Tsvetana Pironkova upset top-seeded Vera Zvonareva, 6-0, 6-2, on Thursday in the second round of the Kremlin Cup, sending Jelena Jankovic to the season-ending WTA Championships.

Soderling rolls in Stockholm

Stockholm — Robin Soderling defeated Andreas Seppi, 6-1, 6-3, Thursday to reach the quarterfinals at the Stockholm Open. Soderling, a surprise finalist in the French Open this year, will play Guillermo Garcia-Lopez.

NBA

Cavaliers cut Robinson

Cleveland — The Cleveland Cavaliers have trimmed their roster to 15, waiving guards Russell Robinson and Andre Barrett and center Darryl Watkins. Robinson, a member of Kansas University’s NCAA championship team in 2008, made one preseason start and played in five games overall, averaging 6.4 points and 2.4 assists in 20 minutes.

BASEBALL

Royals hire trainer

Kansas City, Mo. — The Kansas City Royals have hired Nick Kenney as head athletic trainer. Kenney, hired Thursday, spent the past five seasons as assistant trainer for the Cleveland Indians and was part of a staff that was voted in 2007 as the best in baseball by the Professional Baseball Athletic Trainers Society and Baseball Prospectus.

Kenney replaces Nick Swartz, who retired after 33 years with the club.

La Russa weighs future

St. Louis — Nearly two weeks after his team was swept in the first round of the playoffs, Tony La Russa still is trying to decide whether he wants to return for a 15th season as St. Louis Cardinals manager.

In a telephone interview Thursday with The Associated Press, La Russa promised the team he’d make a decision fairly soon. Chairman Bill DeWitt Jr. and general manager John Mozeliak both have said they’d like La Russa back.

Indians interview Valentine

Cleveland — Bobby Valentine would manage on Mars. He’d settle for Cleveland. Back after six years in Japan, the former New York Mets manager had his second interview with the Indians on Thursday. The 59-year-old admitted he has a lot of catching up to do after being away from the major leagues, but would embrace the opportunity to take over in Cleveland.

Valentine took the Mets to the World Series in 2000. He has a 1,117-1,072 record as a manager for Texas and New York.