NFL questions for those in the know (have just watched Draft Day)

[El Kabong]

#1 - Yes you CAN refuse to join the team that picked you and this has happened many times before most recently with Eli Manning refusing to join the San Diego Chargers thereby forcing a trade with the New York Giants sending Philip Rivers the other way. Also Hall of Famer John Elway refused to sign for the then Baltimore Colts although he went to play baseball for a year before being officially drafted by the Denver Broncos. I believe if you get drafted and then refuse to sign you must sit out a year unless a trade that all parties agree to can be made

#2 Guys can come into the league as free agents or through practice squads at pretty much any time, but much like soccer teams are restricted to dressing a certain number of players and so on.

#3 Teams can trade during the season up to a certain date called a "trade deadline"