Charles Krupa/Associated Press
The mystery of Tom Brady's cryptic photograph on social media earlier this week has reportedly been solved.
Per NFL Network's Mike Garafolo and Ian Rapoport, the picture was a tease for an ad that will run on Fox during Super Bowl 54.
It's unclear what the ad will be for, though Brady has a number of endorsement deals with companies like Aston Martin, Tag Heuer, Under Armour and Sam Adams.
The photograph led to heavy speculation Brady was either suggesting he was leaving the New England Patriots as a free agent or retiring from the NFL.