Shields and Fitch were expected to serve as the co-main event to the July 5 card, which has been rumored for NBC instead of NBC Sports Network. The main event that night will see WSOF lightweight champion Justin Gaethje meet Nick Newell.
Shields (29-7-1) was released by the UFC following a loss earlier this year to Hector Lombard. The former Strikeforce champion and one-time title contender to Georges St-Pierre has gone 5-3 with one no-contest since 2010.
Fitch (25-6-1), also a former UFC welterweight title contender to GSP, snapped a two-fight losing skid by earning a split decision over Marcelo Alfaya last October. He is just 2-3-1 in his last six overall.
Below is the current lineup for the night:
WSOF Lightweight Championship
Justin Gaethje (c) vs. Nick Newell
Welterweight: Jon Fitch vs. TBA
Lightweight: Melvin Guillard vs. Gesias Cavalcante