A third past winner of The Ultimate Fighter has been added to UFC 173, as Tony Ferguson welcomes Katsunori Kikuno to the U.S.

Set for May 24 from MGM Grand Garden Arena in Las Vegas, the main event boasts Chris Weidman defending his UFC middleweight title against Lyoto Machida.

Fergson, a former TUF winner, joins Michael Chiesa and Chris Holdsworth on the card. Also, former finalists T.J. Dillashaw and Al Iaquinta are also set to compete.

Since winning TUF, Ferguson (14-3) has won three of four inside the Octagon. He rebounded from a decision loss to Michael Johnson in October by submitting Mike Rio.

Kikuno (22-5-2) was a winner in his UFC debut over Quinn Mulhern in Singapore this past January. He has won six straight overall.

Below are the fights announced to date:

UFC Middleweight Championship
Chris Weidman (c) vs. Lyoto Machida

Lightweight: Jamie Varner vs. James Krause

Bantamweight: Chris Holdsworth vs. Kyung-Ho Kang

Featherweight: Sam Sicilia vs. Doo Ho Choi

Bantamweight: TJ Dillashaw vs. Takeya Mizugaki

Lightweight: Al Iaquinta vs. Mitch Clarke

Lightweight: Michael Chiesa vs. Francisco Trinaldo

Lightweight: Tony Ferguson vs. Katsunori Kikuno