NFL Commissioner Roger Goodell will implement a "Rooney Rule" requiring that women be interviewed for executive positions with teams around the league and in his own office, too.

Goodell made the announcement Thursday in his opening remarks at the first NFL Women's Summit, part of Super Bowl 50.

"We believe in diversity," Goodell said. "We believe we're better as an organization when we have good people at the table. We have great people at the table. We're also seeing it on the field. ...

"You can see that progress is being made and our commitment is, we have something called the Rooney Rule, which requires us to make sure when we have an opening that on the team or the league level that we are going to interview a diverse slate of candidates," Goodell said. "Well, we're going to make that commitment and we're going to formalize that we, as a league, are going to do that for women as well in all of our executive positions. Again, we're going to keep making progress here and make a difference."

The Bills hired the NFL's first full-time female assistant coach last month, Kathryn Smith, as special teams quality control coach.

That move comes after Jen Welter coached the Cardinals' inside linebackers during Arizona's training camp last summer, while Sarah Thomas became the league's first female official this past season.

"Sarah was our first female NFL official on the field this year," Goodell said. "She did a fantastic job, and we're very proud of her. We also have people breaking into the coaching ranks. Jen was the first coach last year. She set a trend, and we now have a second coach with the Buffalo Bills."

NFL to play in Mexico

The NFL is planning to play a regular-season game in Mexico City this year, with the Raiders hosting the Texans.

A date for the game has not yet been determined. The NFL schedule comes out in the spring.

The Raiders are having stadium issues in California, and the Texans have a strong interest in the Mexican market.

The Raiders applied for relocation to Los Angeles for the 2016 season, but league owners voted to allow the St. Louis Rams to move, and also gave an option to the San Diego Chargers to join the Rams in L.A. That left the Raiders in an outdated stadium while they try to work out something in Oakland.

So playing a home game elsewhere, particularly in the potentially profitable Mexican market, makes sense for the Raiders, too.

No NFL game has been played in Mexico since a regular-season match between Arizona and San Francisco in 2005 drew more than 103,000 to Azteca Stadium.

Manziel on drugs?

Johnny Manziel's ex-girlfriend told police the Browns quarterback hit her during an argument last weekend in Texas and said he appeared to be on drugs.

The report released by Fort Worth police provides the first details of the altercation that took place Saturday night between Manziel and Colleen Crowley. Manziel is being investigated for a possible assault on Crowley. He has not been arrested.

Crowley said she later fled her apartment on Saturday and ran to a neighbor's for help in an attempt to get away from Manziel, who fled the scene on foot.