Traditionally, the season has opened with the Super Bowl winner playing host on the Thursday night after Labor Day.
The Ravens won't have that opportunity unless the Orioles, who share parking lots at Camden Yards with the Ravens' M&T Bank Stadium, move their night game Sept. 5 to the afternoon.
So far, there's been no progress, and Sept. 4 is not an option because it's the first night of Rosh Hashanah.
NFL commissioner Roger Goodell twice has spoken with his MLB counterpart, Bud Selig, seeking a solution.
"Unfortunately, the only (other) option is to take the Ravens on the road," Goodell said. "We think that is wrong for the Ravens' fans. We would not want that to happen.
"We are working on parallel tracks for a couple more weeks. Clearly, we are getting to a point where we have to make that decision."
Last year, the NFL moved the opener to a Wednesday night to avoid conflicting with President Barack Obama's acceptance speech at the Democratic Convention.