#28 Chris Johnson, RB (2008-2013)
This is where the list gets a little less clear and a little more based on personal feelings.
For me, when I think of retired numbers I want to have a clear memory of a play or a game in my mind. Something that I remember as a historic career defining moment or as a player who was the best at his position for a significant stretch of time.
For me, the image of Chris Johnson‘s long run against the Seattle Seahawks only to get called back by a bad holding call is the memory. That run probably would have convinced the Titans to keep feeding him until he broke the all-time rushing yards in a season record.
Instead, he had to settle for having the most yards from scrimmage in a single season ever.
You can make an argument that his 2009 season was the best season by any Titans player ever. That single season dominance plus the fact that he never accounted for less than 1,400 yards from scrimmage as a Titan should earn him the retirement of the 28 jersey.