With the initial roster shuffling finalized for the moment, some members of the current Dallas Cowboys rosters are switching their numbers. It’s an annual tradition for teams across the league, especially amongst rookies who are fighting for a roster spot.

Amongst players switching it up is rookie running back Tony Pollard, who is going from No. 36 to No. 20. Most recently worn by running back Darren McFadden, it’s history isn’t exactly rich in the post Mel Renfro era, the defensive back who made 10 Pro Bowls and a spot in Canton, OH. in the Hall of Fame.

Running back Alfred Morris, who made his bones in the league as No. 46 for the Washington Redskins and his two seasons in Dallas has switched from No. 23 to No. 32. Preseason superstar and rookie safety Donovan Wilson has changed from the weird No. 37 to No. 26.

It’s possible more changes will crop up as players are shuffled in the week leading up to the long-awaited season opener against the New York Giants.

It’s well known that the Cowboys, rooted in tradition, have some strange uniform quirks. For example, wearing white at home the majority of the time (until this year) with pants that aren’t quite silver and, of course, never retiring numbers. But just because Dallas doesn’t officially retire certain numbers, there are some that have been off limits for years.

Bob Lilly’s No. 74 is a prime example. During the preseason you will see players donning the Hall of Famer’s digits, most recently defensive end Jalen Jelks who was moved to injured reserve on Saturday. Current defensive end Dorance Armstrong wore it last year in exhibition games before switching to No. 92.

Other numbers that are off limits include No. 22 worn by Hall of Famers Emmitt Smith and Bob Hayes, No. 12 made famous by Hall of Fame quarterback Roger Staubach, and No. 8 worn by Hall of Fame quarterback Troy Aikman.

No. 88, with maybe the greatest lineage of all jersey numbers in Dallas is not off limits, though it does have a special place in Cowboys’ lore. It’s usually bestowed to the next great wide receiver to walk the path that Drew Pearson, Michael Irvin, and Dez Bryant did before them. It’s currently not in use.