The NFL has always had trouble with elementary school topics.
Ignoring the fact that they needed a map prior to the division realignment (St. Louis Rams still in NFC West?!), they apparently had issues with spelling abbreviations.
When the Jacksonville Jaguars entered the league in 1995, they were given the JAC abbreviation. Nearly two decades later, after constant pissing and moaning from hardcore Jaguar fans, the NFL has made the proper change and altered the abbreviation from JAC to JAX.
Per the Jaguars Twitter feed:
"BREAKING: Just received from @nfl, “The masses have been heard. It’s now officially JAX.” #JAXnotJAC #Jaguars #StandUnited"
As minor of a move as it would seem, making a change created quite the legwork for the league considering all the simple alternations that would need to be made (schedules, etc).
The proper move though was to give the team the name they desired, which the NFL did.
Now instead of being pronounced ‘Jack-sonville’ (as in the name Jack) with a hard ‘c’ and ‘k’, it will be pronounced with the more proper ‘x’ pronunciation, as in ‘axe’.
All that said, the Jags still suck. So there’s that.