An important part of the NFL fans viewing experience is the number on the back of a players jersey.
Whether you're viewing the game live, or from the front of a television screen, the jersey numbers help you to distinguish who is who, when you can't see the players name or face.
Free safety Bacarri Rambo, the projected starter and rookie that fans became familiar with as number 29 in the preseason, changed his number to 24.
Roy Helu Jr. also wears number 29, and because there can't be duplicate numbers on a team once the regular season begins, the rookie had to change his.
Rookie linebacker Brandon Jenkins was forced to change his number for the same reason.
He shared number 57 with long-snapper Nick Sundberg, and in another case of seniority rules, he will now be sporting number 51.
Joining his fellow 2013 draft-picks in the number swapping, running back Chris Thompson changed his number from 35 to 25.
The number 25 fits someone of Thompson's quickness and stature (5'7" - 192 lbs) better than 35 did.
You would traditionally see a number in the 30's on a bigger, and more powerful back.
The only non-rookie to change his number was linebacker Nick Barnett who will now be wearing 55 instead of 90.
Barnett, who wore 50 for his previous team, the Buffalo Bills, was a late-training camp addition to the roster, and didn't really have a whole lot of number options to choose from, with basically 89 players already ahead of him on the roster.
Following roster cuts however, Barnett was able to pick a number of his liking, and gave a reason for the choice on his twitter Sunday evening tweeting, "55 is a powerful number as the energies and attributes of number 5 are doubled, amplified and reinforced!! Go 55!!! #HTTR."