Part Of This movie was fiction
I was at the library the other day and found out through a book called The Eagles Encyclopedia(published before this movie came out) that the scene where Papale gets invited to a Eagles camp by his showing at the tryouts was made up.
The Eagles were not the first Pro Football team Papale played for.He actually played for the Philadelphia Bell before the Eagles.
The Bell was part of the WFL,a pro football league take took on the NFL back in 1973.The league was a joke from the start,it only lasted one season,it was drowning in red ink from the beginning.It did sign a lot of big name NFL players,most notably Csonka,Kiick,and Warfield from the Miami Dolphins(they played for a team called the Memphis Southmen(I'm not making this up)and some high profile college players.
Papale was invited to the Eagles camp because of his play with the Bell.He was not offered a place on the team,he still had to make the team as a longshot,so that part was true.It was also true he was working as a teacher/bartender before the Eagles camp.
I guess it made a better Hollywood movie showing him making a spot on the Eagles than the Bell.
I'm going to research this more.