Jersey Numbers Issued to Newbies

[ctpatsfan77]

The numbers between 50-59 may be used by OL (according to NFL rules), but it's generally been restricted to Centers. Might only be strictly enforced during the regular season, though. Anyway, 51, 56 & 57 are available, AFAIK.

In the preseason you can double up, as long as they're not on the field at the same time.

 

[maineman209]

In the preseason you can double up, as long as they're not on the field at the same time.

Of course. Usually a number is shared between one player on offense and one player on defense.