Bantamweights with identical 4-1 UFC records will square off in September at UFC on FS1: Bader vs. Teixeira, as T.J. Dillashaw battles Raphael Assuncao.
The event takes place September 4 from Belo Horizonte, Brazil. The main event boasts Ryan Bader vs. Glover Teixiera.
Dillashaw (8-1) has won four straight since a loss to John Dodson in the finals of the 14th season of The Ultimate Fighter.
Assuncao (20-4) is also on a four-fight win sreak and will be the prohibitive home-crowd favorite fighting in his native country.
Globo first reported the bout, which has yet to be confirmed by the UFC.