http://www.cnn.com/2014/11/16/us/dea-nfl-investigation/
According to this, the encounter with the Tampa Bay Buccaneers took place at BWI.
http://www.nydailynews.com/sports/fo...icle-1.2012969
And according to this (15th paragraph), NFL teams are routinely screened at hotels or stadiums before they leave for the airport.
Either of those could explain TSA involvement.