SAN FRANCISCO (AP) – NFL Commissioner Roger Goodell pledged Friday “to do everything possible” to help teams in Oakland and San Diego work to get new stadiums in their current markets.

“The league supports both of these teams, but we are working very hard with not only the teams but the communities to try to find a solution that works for everybody,” Goodell said at his annual Super Bowl week news conference. “This has to work for the communities, and it has to work for the teams long-term.”

The Rams have moved to Los Angeles from St. Louis starting in the 2016 season. The Chargers will play in San Diego in 2016, but have an option to join the Rams at a new stadium being built in Inglewood if the city and team can’t work out a deal.

The Raiders also wanted to move to Los Angeles, but may look at other cities if they can’t make a stadium deal with Oakland.

Goodell also confirmed the Raiders and Texans will play a Monday night game on Nov. 21 in Mexico City, the first regular-season game in Mexico since 2005.

Goodell said the league did not plan any changes to its policy of testing players for marijuana, despite any state legalization efforts. Goodell said the league policy was not affected by state laws.

Goodell said the NFL has “made great progress” in the area of concussions by way of rule changes and improving equipment.

“There will be a new helmet coming out this season,” Goodell said. “… Which I think is going to be a very positive step in trying to get better protection.”

There also will be a new technology beneath artificial turf, “which will take out the impact. We have a large number of concussions that occur from just the head on the turf.”