The pair basically negotiated the bout via social media and with it the one the fans want to see has been scheduled as the main event on March 23.
Both are coming into the fight on the back of losses, and in Tennessee they’ll be wanting to put that right.
But who will take the tie?
Stephen Thompson v Anthony Pettis Betting Odds
Thompson is a far and away favourite with the bookmakers currently, with the 36-year-old priced at +450.00 with many.
It’s a big price given the Wonderboy has won just one of his last four fights, but he’s a natural welterweight and will use that to his advantage.
Pettis on the other hand hasn’t fought at 170 pounds or higher since 2009, his World Extreme Cagefighting debut, spending much of his career as a lightweight.
Showtime will be hoping his skill on the floor will make up for his unnatural weight, with the submission expert looking to capitalise on that.
Power is going to play a bit part though and a Thompson knockout is the most favoured outcome with bookmakers, having won half his fights by way of knockout.