Bradley Cooper's going to be all nerves when his Philadelphia Eagles kickoff their game Sunday ... but, he was able to enjoy a relaxing pregame moment on the field before the match -- chatting up his former costar Terry Bradshaw.
The actor stopped by the set of "Fox NFL Sunday" -- the broadcast network's popular pregame show -- and, dapped up the former Pittsburgh Steelers star while live on-air.
BC says he wanted to come by and say hi to Terry because they worked on the movie "Failure to Launch" -- starring Matthew McConaughey and Sarah Jessica Parker -- back in 2006, and they've remained good friends since.