News Ltd. initially reported the bout, which was confirmed by UFC Australia.
The fight will be the first for both Whittaker and Smith since claiming their TUF titles late last year. Whittaker got past tough Brit Bradley Scott in the TUF-Australia vs. UK finale on the Gold Coast, while just one day later Smith caused an upset defeating Mike Ricci.
“To get this news is unbelievable, dumfounding,” Whittaker told The Daily Telegraph. “Before The Ultimate Fighter, I was appearing before a couple of hundred people at most. Now I’m on the card of a Las Vegas blockbuster. This is every Australian fighter’s dream.”
The fight is expected to take place on the preliminary card on the May 25 show headlined by Cain Velasquez defending his UFC heavyweight title against Antonio “Bigfoot” Silva.
(Follow @AndrewPMMA on Twitter)
© 2013 MMA Weekly All Rights Reserved.