This discouraging development doesn't seem to be cause for alarm, though, because the extent of the injury, while specifics are currently unknown, appears to be minor. Titans beat writer Terry McCormick documented that Johnson expects to play in the preseason opener against the Washington Redskins:
CJ said ankle was swollen when he got up and #Titans told him to take today off. Expects to play vs Redskins— Terry McCormick (@terrymc13) August 1, 2013
Jim Wyatt of The Tennessean reported what head coach Mike Munchak had to say on the matter, and he reflected a similarly positive sentiment:
Munchak said he's not concerned with CJ's ankle. Expects him to play in preseason opener next week #Titans— Jim Wyatt (@jwyattsports) August 1, 2013
Johnson, nicknamed "CJ2K" thanks to his 2009 campaign in which he ran for over 2,000 yards, is shooting for similar success this season. The ankle setback looks to only be a small speed bump.
The 27-year-old playmaker recently told CBS Sports' Pete Prisco that he plans on reaching that aforementioned lofty plateau again in 2013, while helping the Titans to their first playoff berth since 2008—Johnson's rookie season.
In Prisco's report, Johnson also intimated how baffled he was that people were implying he had lost a step. Considering such a big part of his game is based on his unique speed, a decline in that attribute would significantly hurt his production.
However, the perception of Johnson declining should be at least partially blamed on the Titans' offensive line, which was a mess last year. Even with spotty quarterback play to go along with that, Johnson still managed to run for 1,243 yards and six touchdowns.
Tennessee made an effort to enhance the protection up front by bringing in ex-Buffalo Bills guard Andy Levitre in free agency and selecting Alabama standout guard Chance Warmack in the first round of the 2013 NFL draft.